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www.coscokids.com
4358-8531B
02.26.25
scenera
®
extend
convertible car seat
KEEP INSTRUCTIONS FOR FUTURE
USE. Read all instructions before
using this car seat.
WARNING Failure to follow the
warnings on the labels and in the
instruction manual can result in serious
injury or death to your child. Serious
injury may include paralysis and/or
permanent brain injury.
8531A
8531B
Overview
Welcome to the Cosco
TM
family and thank you for choosing
this car seat, also known as a child restraint!
To help you get started using your child’s new car seat,
here are the 4 main tasks you’ll need to complete:
Your child’s safety is worth the time it will take for you to read
and follow these instructions.
Ready? Let’s go!
Pages 1−2 will introduce you to the parts of the car seat.
Page 68 has our contact information. If at any point you would like assistance,
please feel free to reach out to us.
Adjust the Car Seat to Fit Your Child
Measure Your Child
Install the Car Seat into Your Vehicle
Secure Your Child in the Car Seat
Quick Navigation
REAR-FACING
5−40 lb (2.3–18 kg)
and 19−40 in.
(48–101.6 cm)
In this car seat, your child MUST
ride Rear-Facing and remain in
Rear-Facing mode until they outgrow
any one of the above. PAGE 4
Rear-Facing
Child Fit
PAGE 7
Adjusting
Car Seat
PAGES 9−16
Securing
Child
PAGE 46
Vehicle Belt
PAGE 29
Lower Anchor
PAGE 33
Vehicle Belt + Tether
PAGE 39
LATCH + Tether
PAGE 42
FORWARD-FACING
30−50 lb (13.7−22.7 kg)
and 34.4−44 in.
(87.1−111.8 cm)
In this car seat, your child can use
the harnessed Forward-Facing mode
until they outgrow any one of the
above. PAGE 4
Forward-Facing
Child Fit
PAGE 8
Getting Started
Parts of the Car Seat .......................1
Accessory Use ............................... 3
Choosing Car Seat Mode ............... 4
Prepare Car Seat to Fit Your Child ....... 6
Rear-Facing Child Fit ...................... 7
Forward-Facing Child Fit .................. 8
Making Adjustments to Car Seat
Changing Buckle Position ............... 9
Changing Shoulder Harness
Strap Position ................................ 11
Harness System Adjustments for
Smaller Infants ................................ 13
Choosing LATCH or Vehicle Belt
LATCH: Lower Anchor Use .............. 17
Vehicle Belts .................................. 20
Tether Use ......................................25
Installation in Vehicle
Rear-Facing Mode .......................... 27
Rear-Facing Vehicle Belt Install ........ 29
Rear-Facing LATCH:
Lower Anchor Belt Install ................ 33
Forward-Facing Mode ................... 37
Forward-Facing Vehicle
Belt + Tether Install ........................ 39
Forward-Facing LATCH: Lower
Anchor + Tether Install ................... 42
Securing Child in Car Seat ........46
Car Seat Pad Use and Care
Removing Seat Pad for Cleaning .......50
Removing Harness System ...............51
Installing Harness System ................. 53
Safety Information
Aircraft Information ....................... 57
Replacement and Expiration
of Car Seat ..................................... 58
Child Restraint Use ........................... 60
Vehicle Seating Position ................... 61
Installation in Vehicle ........................ 62
Registration and Safety Notices ......... 63
Additional Information
Troubleshooting ............................... 64
Warranty ......................................... 65
Replacement Parts List ..................... 67
Dorel Juvenile Group Information ...... 68
Contents
Parts of the Car Seat
1 2
Harness Strap
Chest Clip
Buckle
Removable Cup Holder*
(attachment under pad)
Hip Harness Slots
Harness
Release Lever
(under flap)
Harness
Adjustment
Strap
Lower Anchor Belt
Shoulder
Harness
Slots
Forward-Facing
Belt Path
Rear-Facing
Level Line
Shell
(child restraint)
Rear-Facing Belt Path
Tether
Instruction Manual
Storage
(under seat pad)
Splitter
Plate
Harness
Adjustment Strap
Tether
Attachment
for Storage
*
See page 3 for Accessory Use.
Lower Anchor
Storage
Accessory Use
Choosing Car Seat Mode
3 4
Cup Holder
The cup holder can be
attached to either side
of the shell.
Pull pad off corner of
shell. Align symbol on
cup holder with symbol
on shell.
Hook bottom of cup
holder under edge of
shell. Snap top of cup
holder over edge of shell.
Replace pad.
The cup holder is
dishwasher safe.
Head Pillow
(on select models)
To remove, from
the back of the
head pillow, gently
pull the fabric tabs out from the
shoulder harness slots.
To attach, slide the fabric tabs into
shoulder harness slots.
Your child’s height, weight, and age determine
how the car seat should be placed in the vehicle.
Children vary widely in body size, shape, and
temperament—please consult your doctor
before switching between any modes
within the limits and fit requirements of the
car seat.
continued on next page
Failure to follow these instructions may
result in serious injury or death to your
child. Serious injury can include
paralysis and/or permanent brain injury.
Be certain to measure your child’s
weight and height (do not guess) before
choosing this car seat’s mode.
Infants and Toddlers
Children must ride rear-facing and remain
rear-facing until they reach the maximum
weight or height limits for rear-facing mode.
Rear-facing child restraints installed behind
another vehicle seat must be installed
touching the back of the vehicle seat in
front of it, or be as close as possible.
Toddlers and Preschoolers
Children can only use a forward-facing
car seat once they outgrow rear-facing
weight or height limits. Once they are
forward-facing, children must use their
child restraint in forward-facing mode with
a harness until they reach the maximum
weight or height limits for forward-facing
harness mode.
WARNING
Prepare Car Seat to Fit Your Child
5 6
Place Child in Car
Seat to Determine
Proper Harness Fit
The child’s bottom and
back should be flat
against the car seat.
For Rear-Facing Child Fit, see page 7.
For Forward-Facing Child Fit, see page 8.
Fully Loosen
Harness Straps
Push down on
harness release
lever (through
opening in pad) while pulling out on
harness straps as shown.
Release Chest Clip
Hold each side of the
chest clip and press
on the release button
with your thumb and
pull apart.
Unbuckle Harness
Press in towards
the top of the red
button to release
the buckle tongues.
1
3
4
2
REAR-FACING MODE
5−40 lb (2.3−18 kg) and
19−40 in. (48−101.6 cm)
In this car seat, your child MUST ride
Rear-Facing and remain in Rear-Facing
mode until they outgrow any one of
the following:
• Weight Limit: 40 lb (18 kg); OR
• Height Limit: 40 in. (101.6 cm); OR
• Rear-Facing Child Fit requirements,
see page 7.
FORWARD-FACING MODE
30−50 lb (13.7−22.7 kg) and
34.4−44 in. (87.1−111.8 cm)
In this car seat, your child can use the
harnessed Forward-Facing mode until
they outgrow any one of the following:
• Weight Limit: 50 lb (22.7 kg); OR
• Height Limit: 44 in. (111.8 cm); OR
• Forward-Facing Child Fit
requirements, see page 8.
Rear-Facing Child Fit
Forward-Facing Child Fit
7 8
Head Position
The top of your child’s ears
MUST be below the top of
the car seat.
Buckle Position
The buckle can be used in
any slot. Choose the slot
closest to your child.
The buckle strap should not be
underneath or behind your child.
Harness Strap Position
The harness strap MUST
be at or slightly above the
shoulders; never below.
Need to make adjustments?
To change the buckle position,
see pages 9−10.
To change harness strap position,
see pages 11−12.
Head Position
The top of your child’s
head MUST be at least
1 in. (2.5 cm) below the
top of the car seat.
Buckle Position
The buckle must be used
in either the 1st or 2nd
slot. Choose the slot
closest to your child.
The buckle strap should
not be underneath or
behind your child.
Harness Strap Position
The harness strap MUST
be at or slightly below
shoulders; never above.
Need to make adjustments?
To change the buckle position,
see pages 9−10.
To change harness strap position,
see pages 11−12.
1
2
1 in. (2.5 cm)
1
2
1 in. (2.5 cm)
1
2
1 in. (2.5 cm)
Do not use
3rd slot in
Rear-Facing
mode.
Changing Buckle Position
9 10
Pull Buckle’s
Metal Retainer
Completely
Through Pad
and Shell
Check Buckle
Pull up on buckle
to make sure it
is secured.
The buckle MUST
not pull out.
1
2
3
1
2
3
Check your child’s fit often.
If you cannot achieve a snug harness
fit for your child, see pages 13−16.
To learn how to check harness
tightness, see pages 46−49.
Turn Seat Over
Locate buckle’s
metal retainer on
bottom of shell.
Rotate Metal
Retainer and
Push It Up
Through Buckle
Slot in Shell
From Top of Seat,
Pull Buckle Out of
Shell and Pad
Insert Buckle’s
Metal Retainer into
Slot Closest to Child
The buckle MUST
face out.
You MUST use the 1st or 2nd buckle
slots when child restraint is used
Rear-Facing. Any slot can be used
when Forward-Facing.
1
2
3
1
2
3
1
2
3
1
2
3
1
3
5
6
4
2
Failure to place buckle’s metal
retainer completely through pad and
child restraint can result in serious
injury or death. Serious injury can
include paralysis and/or permanent
brain injury.
WARNING
Changing Shoulder Harness Strap Position
11 12
Attach Harness
Strap Loops to
Splitter Plate
Sewn ends of the
harness strap loops
MUST face towards you.
DO NOT twist harness straps or
harness adjustment strap. Make sure
the harness strap loops are fitted
completely on both sides of the
splitter plate.
Check your child’s fit often.
Make sure the harness height is
correct for your child’s size.
sewn
end
If you cannot achieve a snug harness
fit for your child, see pages 13−16.
To learn how to check harness
tightness, see pages 46−49.
Check the harness straps often for
any wear or damage.
Fully Loosen
Harness Straps
Push down on
harness release
lever (through
opening in pad) while pulling out on
harness straps as shown.
From Back of
Seat, Remove
Harness Straps
Loops From
Splitter Plate
Pull Harness
Straps Out
of Shoulder
Harness Slots
sewn
end
sewn
end
sewn
end
Rethread Harness
Straps into
Correct Shoulder
Harness Slots For
Your Child
For Rear-Facing Child Fit,
see page 7.
For Forward-Facing Child Fit,
see page 8.
sewn
end
1
2
3
5
4
The harness system MUST be
installed correctly. DO NOT use
a child restraint with damaged
harness straps.
Failure to follow these warnings can
result in serious injury or death.
Serious injury can include paralysis
and/or permanent brain injury.
WARNING
Harness System Adjustments
for Smaller Infants
13 14
continued on next page
sewn
end
1
2
3
sewn
end
1
2
3
From Back of
Seat, Remove
Harness Strap
Loops From
Splitter Plate
Fully Loosen
Harness Straps
Check Buckle
Pull up on buckle
to make sure it is
secured. The buckle
must not pull out.
Check your child’s fit often.
To learn how to check harness
tightness, see pages 46−49.
sewn
end
1
2
3
Adjusting Harness Strap
If you cannot achieve a snug harness fit for your child, you may need to adjust the
buckle strap position and/or harness strap length as shown in this section.
With Buckle in the
1st Slot As Shown,
Turn the Seat Over
If you need to move
the buckle to the 1st
slot, see pages 9−10.
From Bottom of Seat,
Pull Metal Retainer
Towards You and
Push It Up into 2nd or
3rd Slot As Needed to
Achieve a Snug Fit
Pull Up Front of
Seat Pad
sewn
end
sewn
end
1
2
3
sewn
end
1
2
3
Adjusting Buckle Strap
From Top of
Seat, Lay the
Metal Retainer
Flat Against the
Shell As Shown
sewn
end
1
2
3
1
3
1
5
2
4
2
sewn
end
1
2
3
Unthread Chest
Clip
sewn
end
1
2
3
Pull Harness
Straps Out
of Shoulder
Harness Slots
3
4
Do not twist harness strap
or harness adjustment
strap. Make sure the
harness strap loops are
fitted completely on both
sides of the splitter plate.
Check your child’s fit often. Check
the harness straps often for any wear
or damage.
15 16
Thread Buckle and
Chest Clip
Harness strap end goes
through the back of
buckle tongues and
through the chest clip
front to back as shown.
Thread Harness
Strap Up Through
Slot in Seat Pad
Replace seat pad
around front of shell.
sewn
end
1
2
3
sewn
end
1
2
3
sewn
end
1
2
3
Make Harness
Strap Even
Sewn ends of
harness strap loops
must face each other.
sewn
end
1
2
3
sewn
end
1
2
3
front of seat bottom of seat
sewn
end
1
2
3
Weave Harness
Strap In and Out of
Shell as Shown
Harness strap goes
behind buckle strap.
Thread Harness
Strap Into Correct
Shoulder Harness
Slots for Your Child
sewn
end
1
2
3
Attach Harness Strap
Loops to Splitter Plate
Sewn ends of the
harness strap loops
must face towards you.
sewn
end
1
2
3
sewn
end
1
2
3
sewn
end
1
2
3
Unthread Buckle
Do not unbuckle
the buckle.
sewn
end
1
2
3
Lift Up Front of Seat
Pad, Turn Seat Over
and Pull Harness
Strap Down and Out
of Hip Harness Slot
6
8
10
11
12
9
7
5
Harness system must be installed
correctly. DO NOT use a child restraint
with damaged harness straps.
Failure to follow these warnings can
result in serious injury or death.
Serious injury can include paralysis
and/or permanent brain injury.
WARNING
LATCH: Lower Anchor Use
17 18
Your vehicle’s features may be considerably different than those pictured here.
The lower anchors of LATCH (Lower Anchors and Tethers for CHildren) is a universal
system for installing child restraints without using vehicle seat belts.
The lower anchor can ONLY be used in vehicles that have the lower anchor bars
installed in designated seating positions. Most vehicles manufactured after September
2002 are equipped with lower anchor bars. Check your vehicle owner’s manual to see
which seating positions may be equipped with LATCH: lower anchor bars.
Seat Bight
continued on next page
Lower Anchor Bars
For Use in Rear-Facing
or Forward-Facing Mode
Lower Anchor
Hooks
Adjuster
To Remove Lower Anchor Belt from
Storage Location on Car Seat:
Squeeze spring lever on hooks and remove
hooks from storage attachments.
When installing this child restraint with
vehicle belts, the lower anchor hooks and
belt MUST be properly stored.
DO NOT use both the lower anchor belt and vehicle belt at the same time.
WARNING
Vehicle Belts
19 20
Storing Lower Anchor Belt:
When used Rear-Facing, thread lower anchor belt through
Forward-Facing Belt Path as shown. Then attach hooks to
attachments near Forward-Facing Belt Path as shown. Gently
pull free end of belt to remove slack.
When used Forward-Facing, thread lower anchor belt through
Rear-Facing Belt Path. Then attach hooks to attachments near
Forward-Facing Belt Path as shown. Gently pull free end of belt
to remove slack.
To Remove Lower Anchor Belt from Vehicle
Lower Anchor Bars:
Remove tension from the belt by pushing down
on side of child restraint with the belt adjuster.
Then press the adjuster button to loosen belt.
Unhook from anchor by squeezing spring lever on hook, pushing hook back into the
seat bight, and twisting. Then pull it out of the vehicle seat.
Your vehicle’s features may be considerably different than those pictured here.
If lower anchors are not an option you must use the vehicle seat belt system to install
the child restraint.
Not all vehicle belts and seating positions will work with child restraints. Please
go through the following steps to understand how to lock a child restraint in
Rear-Facing or Forward-Facing mode with a vehicle belt.
Vehicle Belts
continued on next page
21 22
You MUST
Review Your
Vehicle Owner’s
Manual
Your vehicle
owner’s manual will let you know
what vehicle belts and seating
positions child restraints can be
installed in.
Determine How the
Child Restraint Will
Be Locked Into Place
The vehicle belt
MUST NOT loosen
after tightening.
This means there needs to be a way to
lock the vehicle belt.
The ways this can be done are:
• By using the seat belt’s retractor,
see step 3; or
• By using the seat belt’s latch plate,
see step 4.
continued on next page
Check the
Retractor
Retractors pull seat
belts into stored
positions and lock
the belt to hold passengers in place.
A retractor is most likely how you will
be locking a child restraint into place.
See the following
“Types of Retractors”
section for some common types of
vehicle belt retractors that will work
with this child restraint.
Switchable Retractor
(most vehicles have this type)
This retractor can be switched to a
locking mode. You MUST have the
retractor in the locking mode to use the
seat belt with this child restraint.
Switching to locking mode: Slowly pull
the shoulder belt all the way out, then let
it go back in 1–2 in. (2.5–5 cm).
As it goes back in, you will most likely
hear a ratcheting sound.
Gently pull the belt to see if it has locked.
You will not be able to pull any more belt
out if the lock has engaged.
Types of Retractors
1
2
3
23 24
This retractor always locks.
It will automatically lock after slowly
pulling the seat belt out at least halfway
and letting the belt go back into the
retractor 1–2 in. (2.5–5 cm).
If the retractor does not lock, it is most
likely an Emergency Locking Retractor.
These retractors only lock during a
sudden stop or collision.
Automatic Locking
Retractor
Emergency Locking
Retractor
See Step 4,
Check the
Latch Plates
Locking Latch
Plate
Check the
Latch Plates
Latch plates are
the part of the seat
belt that goes into
the buckle.
To see if the latch
plate locks:
1. Buckle vehicle belt.
2. Slowly pull up on
the lap portion of
the vehicle belt.
You will need to determine if your seat
belt’s latch plate can lock the belt.
See step 4, Check the Latch Plates.
Emergency Locking
Retractor Lap Only Belt
Inflatable Seat Belts
Never Use With This Child
Restraint
If the vehicle belt does not slide through
the latch plate, it’s locked.
If the vehicle belt slides through the latch
plate, it is a sliding latch plate.
Sliding latch plates
easily slip between
the lap and shoulder
portions of the belt.
Sliding Latch
Plate
If you have an Emergency Locking
Retractor with a Sliding Latch Plate,
you must use a locking clip.
Please contact us for one. See page 67.
4
Tether Use
25 26
Your vehicle’s features may be
considerably different than those
pictured here.
For Forward-Facing
Mode Only
When anchors are available, you must alwaysattach, adjust, and secure the top anchorage
(tether) strap when installing the child restraint forward-facing with internal harness. Tethers improve
the installation and stability of child restraints and reduce the risk of injury. Attach the tether hook
to the tether anchor designated by your vehicle manufacturer for that seating position. Check your
vehicle owner’s manual for more information. If the seating position does not have a tether anchor, use
a different seating position or see your dealer or a qualified mechanic and have one installed.
Tether Anchors
Storing Tether Strap
The tether strap MUST be properly stored in its
storage location when:
• installing in Rear-Facing Mode; OR
• the car seat is not installed in a vehicle.
Attach the tether hook to its storage attachment on the
back of the shell as shown. Gently tighten to remove slack.
Adjuster
Strap
Hook
Storage
Location
Tether Storage and Parts
Adjusting Tether Strap
To tighten: After the child restraint is locked into place with
the lower anchor belt or vehicle belt, push down on child
restraint and gently pull on free end of tether strap.
To loosen: Lift up on tether adjuster and push it
towards tether hook.
If your seat has an adjuster with a button, then squeeze
the adjuster button and pull the strap to loosen as shown.
Pull free end of
belt to tighten
Lift adjuster up to
loosen
Using this child restraint without the tether strap anchored as required by the manufacturer
would be a misuse of the child restraint and, in a sudden stop or crash, could result in
serious injury or death. Serious injury can include paralysis and/or permanent brain injury.
DO NOT fasten multiple tether hooks on the same tether anchor in the vehicle.
WARNING
Rear-Facing Mode
27 28
5−40 lb (2.3−18 kg) and 19−40 in. (48−101.6 cm)
Lower Anchor Belt Lap/Shoulder BeltLap Belt
NEVER install a rear-facing child restraint in the front seat of a vehicle
equipped with an active frontal airbag.
DO NOT use the tether for rear-facing mode. Secure the tether strap hook to its
storage attachment.
DO NOT use the lower anchor belt along with the vehicle lap or lap/shoulder belt.
DO NOT fasten multiple lower anchor hooks on the same lower anchor bar in the vehicle.
Check the vehicle belt or the lower anchor belt before each use.
Use ONLY if the belt can be tightened properly and locked securely in place.
Even when unoccupied, this child restraint MUST be firmly secured to the vehicle
with the lower anchor belt or with the vehicle seat belt.
This child restraint MUST ALWAYS face the rear of the vehicle until the child has
reached the maximum weight or height limit for the rear-facing mode.
DO NOT use both the LATCH: lower anchor belt and vehicle belt at the same time to
install the car seat.
WARNING
WARNING
In this car seat, your child MUST ride Rear-Facing and remain in Rear-Facing mode
until they outgrow any one of the following:
Check Level Line
For children 5–30 lb
(2.3–13.6 kg) and
19–34.3 in. (48–87 cm),
the bottom level line on
the shell must be parallel
with the ground.
Buckle the
Vehicle Belt
If your car has a
switchable retractor,
use it to lock the
vehicle belt. Review page 22 of this
manual or your vehicle owner’s manual.
Tighten Belt
Place hand in
child restraint.
Firmly push child
restraint down and
back towards the vehicle seat back
while pulling shoulder belt or the free
end of lap belt to tighten.
Rear-Facing Vehicle Belt Install
29 30
1
2
Place Child Restraint
Rear-Facing in
Back Seat
The car seat base
MUST be flat on the
vehicle seat.
When using the passenger and driver side
locations, the car seat MUST be touching
the back of the seat in front of it, or be as
close as possible.
1
2
continued on next page
Check if Your
Vehicle Belts Will
Work With This
Child Restraint
This is very important because
not all vehicle belts will work with
child restraints. Review pages 20−24
and your vehicle owner’s manual to
determine what kind of vehicle belt you
have and how to lock a child restraint
in place.
1
2
1
2
1
2
Route the
Vehicle Belt
Thread the vehicle belt
into the Rear-Facing
Belt Path opening.
Pull it across the seat,
under the seat pad, in
front of the buckle, and
out through the other
Rear-Facing Belt
Path opening.
DO NOT twist belt.
1
2
1
2
1
2
3
4
5
6
For children 30–40 lb (13.7–18 kg)
and 34.4–40 in. (87.1–101.6 cm)
AND can sit up unassisted, the top
level line on the shell must be parallel
with the ground.
31 32
Check Belt
Tightness
Hold child restraint
at the belt path with
your non-dominant
hand. Push and pull from side to side.
It should not move more than 1 in.
(2.5 cm). If it moves more than 1 in.
(2.5 cm), you can try:
• Pulling the belt tighter; OR
• Reinstalling the child restraint; OR
• Changing to a different seating
location; OR
• Switching to the lower anchor belt
installation if lower anchors are
available in your vehicle.
1
2
Secure Child in
Child Restraint
See pages 46−49.
1
2
NOTE: Only if
necessary, you may
need to place a tightly
rolled towel(s) or foam
pool noodle(s) under
the front of child restraint to help achieve
the correct recline angle.
Check often to be sure padding is still in
place and the belt is tight.
1
2
1
2
1
2
Recheck Level Line
Redo the installation
if the level line is not
parallel with the ground.
Finished!
Check the tightness of the install often
to make sure it has not loosened.
When using the passenger and driver
side locations, the car seat MUST be
touching the back of the seat in front
of it, or be as close as possible.
7
8
9
Check Level Line
For children 5–30 lb
(2.3–13.6 kg) and
19–34.3 in. (48–87 cm),
the bottom level line on
the shell must be parallel
with the ground.
Attach Lower
Anchor Hooks
to Vehicle’s
Lower Anchors
Review your vehicle
owner’s manual for lower anchor
locations and lower anchor belt use.
Repeat for other side the car seat.
Rear-Facing LATCH: Lower Anchor Belt Install
33 34
Remove Lower
Anchor Belt from
Storage Location
Remove it from the
rear-facing belt path so
both hooks are on the same side of the
seat as shown.
Locate Rear-Facing
Belt Path and Route
Lower Anchor Belt
through It
The lower anchor belt
adjuster can be on either side.
1
2
1
2
continued on next page
Reach Under
Pad and Pull
Hook Across to
Opposite Side
Pull it across the
seat, under the seat pad, in front of
the buckle, and out through the other
Rear-Facing Belt Path opening.
DO NOT twist belt.
1
2
Place Child
Restraint Rear
Facing in Back Seat
The car seat base
MUST be flat on the
vehicle seat.
When using the passenger and driver
side locations, the car seat MUST be
touching the back of the seat in front of
it, or be as close as possible.
Check Finished
Lower Anchor
Belt Routing
1
2
1
2
1
3
5
7
6
4
2
For children 30–40 lb (13.7–18 kg)
and 34.4–40 in. (87.1–101.6 cm)
AND can sit up unassisted, the top
level line on the shell must be parallel
with the ground.
Tighten Belt
Place hand in
child restraint.
Firmly push child
restraint down and
back towards the
vehicle seat back
while pulling free end
of belt to tighten.
It may be easier to
pull pad away from
shell and tighten the belt through the
belt path opening as shown.
35 36
1
2
1
2
1
2
Recheck Level Line
Redo the installation
if the level line is not
parallel with the ground.
Secure Child in
Child Restraint
See pages 46−49.
1
2
Check Belt
Tightness
Hold child restraint at
the belt path with your
non-dominant hand.
Push and pull from side to side. It should
not move more than 1 in. (2.5 cm).
If it moves more than 1 in. (2.5 cm),
you can try:
• Pulling the belt tighter; OR
• Reinstalling the child restraint; OR
• Changing to a different seating
location; OR
• Switching to vehicle belt installation.
1
2
NOTE: Only if necessary,
you may need to place a
tightly rolled towel(s) or
foam pool noodle(s) under
the front of child restraint
to help make level line
parallel with the ground.
1
2
1
2
Finished!
Check the tightness
of the install often
to make sure it has
not loosened.
8
9
10
11
Check often to be sure padding is still
in place and the belt is tight.
When using the passenger and driver
side locations, the car seat MUST be
touching the back of the seat in front of
it, or be as close as possible
Forward-Facing Mode
37 38
Lower Anchor
Belt with Tether
30−50 lb (13.7−22.7 kg) and 34.4−44 in. (87.1−111.8 cm)
Lap/Shoulder
Belt with Tether
Lap Belt
with Tether
When anchors are available, you MUST ALWAYS attach, adjust, and secure the
tether (top anchorage) strap when installing the car seat in the Forward-Facing Mode
with internal harness.
DO NOT use the lower anchor belt along with the vehicle lap or lap/shoulder belt.
Check the vehicle belt or the lower anchor belt before each use.
Use ONLY if the belt can be tightened properly and locked securely in place.
DO NOT fasten multiple lower anchor hooks on the same lower anchor bar in the vehicle.
Even when unoccupied, this child restraint MUST be firmly secured to the vehicle
with the lower anchor belt or with the vehicle seat belt.
Before using this seat in forward-facing mode, your child must have outgrown the
seat in rear-facing mode.
WARNING
In this car seat, your child can use the harnessed Forward-Facing mode until they
outgrow any one of the following:
Buckle the
Vehicle Belt
If your car has
a switchable
retractor, use it to
lock the vehicle
belt. Review page 22 of this manual
or your vehicle owner’s manual.
Tighten Belt
Place hand in
child restraint.
Firmly push down
while pulling
shoulder belt or the free end of lap
belt to tighten.
Forward-Facing Vehicle Belt + Tether Install
39 40
Check if Your Vehicle
Belts Will Work With
This Child Restraint
This is very important
because not all vehicle
belts will work with child restraints. Review
pages 20−24 and your vehicle owner’s manual
to determine what kind of vehicle belt you have
and how to lock a child restraint in place.
Loosely Attach
Tether Hook
Check vehicle
owner’s manual for
specific location.
Place Child Restraint
Forward-Facing
Flush Against Vehicle
Seat Back
continued on next page
2
1
3
6
5
The vehicle seat back MUST be in the upright
position, but you can adjust the angle slightly
to better match the angle of the car seat.
Refer to the vehicle owner’s manual for how
to adjust the vehicle seat back.
Locate the
Forward-Facing Belt
Path and Route the
Vehicle Belt through It
Thread the vehicle belt
through the Forward-
Facing Belt Path opening. Pull it across
the seat. Then thread it through the other
Forward-Facing Belt Path opening. DO NOT
twist belt.
4
Check Belt Tightness
Hold child restraint at the
belt path with your non-
dominant hand.
Push and pull from side
to side. It should not move more than
1 in. (2.5 cm).
If it moves more than 1 in. (2.5 cm),
you can try:
• Putting your knee in the seat and pulling
the belt tighter; OR
• Reinstalling the child restraint; OR
• Changing to a different seating location; OR
• Switching to the lower anchor belt
installation if lower anchors are
available in your vehicle.
7
Tighten Tether
Push firmly on the back
of the seat and pull the
tether strap to remove
all slack and create
tension on the strap.
Securing Child in
Car Seat
To properly secure
your child in the
car seat, see pages
46−49.
Check your child’s fit often and make
any needed adjustments to the car
seat as they grow.
Forward-Facing LATCH: Lower Anchor + Tether Install
41 42
Finished!
Check the tightness
of the install often
to make sure it has
not loosened.
continued on next page
Remove Lower
Anchor Belt from
Storage Location
Remove it from the
rear-facing belt path
so both hooks are on
the same side of the
seat as shown.
Locate the
Forward-Facing
Belt Path and
Route the Lower
Anchor Belt
through It
Pull it across the seat. Then thread it
through the other Forward-Facing
Belt Path opening.
DO NOT twist belt.
The lower anchor belt adjuster can
be on either side of the car seat.
2
1
8
43 44
It may be easier to
pull back the pad
and pull the free
end of the belt
parallel with the belt
path as shown.
Tighten Belt
Place hand in
child restraint.
Firmly push down
while pulling free end
of belt to tighten.
Loosely Attach
Tether Hook
Check vehicle
owner’s manual for
specific location.
Attach Lower
Anchor Hooks to
Vehicle’s Lower
Anchors
Review your vehicle
owner’s manual for lower anchor
locations and lower anchor belt use.
Repeat for other side the car seat.
Place Child
Restraint
Forward-Facing
Flush Against
Vehicle Seat Back
4
6
7
5
continued on next page
Finished
Lower Anchor
Belt Routing
3
Check Belt Tightness
Hold child restraint at
the belt path with your
non-dominant hand.
Push and pull from side
to side. It should not move more than
1 in. (2.5 cm).
If it moves more than 1 in. (2.5 cm),
you can try:
• Putting your knee in the seat and
pulling the belt tighter; OR
• Reinstalling the child restraint; OR
• Changing to a different seating
location; OR
• Switching to vehicle belt installation.
8
Securing Child
in Car Seat
To properly secure
your child in the
car seat, see
pages 46−49.
Check your child’s fit often and make
any needed adjustments to the car
seat as they grow.
Finished!
Check the
tightness of the
install often to
make sure it has
not loosened.
Securing Child in Car Seat
45 46
Place Child in
Car Seat
The child’s bottom
and back should be
flat against the
car seat.
Position harness strap over child’s
shoulders and upper thighs.
Buckle Harness
Push buckle tongues
into buckle until you
hear a “click”.
Pull up on harness
strap to make sure
buckle is locked.
Close Chest Clip
Insert right half of
chest clip into left half
and snap together.
Tighten Harness
Pull on harness
adjustment strap to
tighten harness snugly.
continued on next page
1 3
4
2
Tighten Tether
Push firmly on the
back of the seat and
pull the tether strap
to remove all slack
and create tension
on the strap.
9
47 48
1. Loosen harness strap.
2. Unbuckle harness.
3. Release chest clip.
4. Remove child.
To Remove Child from Car Seat:
continued on next page
Position Chest Clip
Slide the chest clip
up the harness
straps and position
it at mid-chest (even
with armpits) and away from the
child’s neck.
Check Harness
Tightness
Try to pinch the harness
at the shoulders vertically
between index finger and
thumb as shown.
If your fingers slip off, the harness is tight
enough. If you can pinch the harness
strap, tighten more. The harness strap
should be snug throughout its length. A snug
strap should not allow any slack. It lies in
a relatively straight line without sagging. It
does not press on the child’s flesh or push
the child’s body into an unnatural position.
If one side of the harness is tighter than the
other, lengthen the tighter side by pulling up
the harness near the hip slot.
Finished!
The child is now secured in the car seat.
Check your child’s fit often and make any needed
adjustments to the car seat as they grow.
5
6
Removing Seat Pad for Cleaning
49 50
Remove Pad
Pull pad off the
bottom of child
restraint and
remove pad.
You must remove the harness system to remove the pad from the shell.
See pages 51−52.
Cleaning Pad
Machine wash separately with cold water
on a gentle cycle. Do not use bleach.
Tumble dry separately for 10−12 minutes
on low heat. Remove immediately.
Cleaning Harness Strap
Check the harness straps often for any
wear or damage.
Failure to fasten and tighten the harness system correctly may allow
the child to be ejected from the child restraint in a crash or sudden stop
causing serious injury or death. Serious injury can include paralysis and/
or permanent brain injury.
DO NOT mistake comfort for safety. Harness system must be
snugly adjusted.
DO NOT put snowsuits or bulky garments on your child
when placing them in the child restraint.
Bulky clothing can prevent the harness straps from
being tightened properly.
Spot clean using warm sudsy water and damp
cloth. Spilled food and liquids on the child restraint
may result in mold or bacterial growth over time.
These spills could also attract insects or rodents.
Replacing Pad
Starting from bottom of child restraint, slip pad
onto shell. Pull harness adjustment strap through
pad. Wrap pad around the top of shell. Install
harness system, see pages 53−56.
DO NOT use child restraint without the
seat pad or with damaged harness straps.
Failure to do this can result in serious
injury or death. Serious injury can include
paralysis and/or permanent brain injury.
WARNING
WARNING
Removing Harness System
51 52
From Back of
Seat, Remove
Harness Strap
Loops From
Splitter Plate
Unthread
Chest Clip
Pull Harness
Strap Out
of Shoulder
Harness Slots
sewn
end
sewn
end
sewn
end
Fully Loosen
Harness Straps
Only remove the harness system to clean the seat pad.
Pull Harness
Strap Out of Seat
sewn
end
sewn
end
Turn Seat Over
Locate buckle’s
metal retainer on
bottom of shell.
Unthread Buckle
Do not unbuckle
the buckle.
sewn
end
1
3
5
7
6
4
2
sewn
end
Rotate Metal
Retainer and
Push It Up
Through Shell
and Pad
8
sewn
end
From Top of Seat,
Pull Buckle Out
of Shell
9
Installing Harness System
53 54
Insert Buckle’s
Metal Retainer
into Slot Closest
to Child
Buckle MUST face
out. You MUST use the 1st or 2nd
buckle slots when child restraint is
used rear facing. Any slot can be used
when forward facing.
Check Buckle
Pull up on buckle
to make sure it
is secured.
The buckle MUST
not pull out.
Pull Metal Retainer
Completely Through
Pad and Shell
sewn
end
1
2
3
sewn
end
1
2
3
sewn
end
1
2
3
continued on next page
Rethread
Harness Strap
With sewn end of
harness strap loop
facing the buckle,
thread harness strap down through
hip harness slot.
sewn
end
1
2
3
1
3
2
4
Thread Harness
Straps Into Correct
Shoulder Harness
Slots For Your Child
For Rear-Facing Child Fit, see page 7.
For Forward-Facing Child Fit, see page 8.
sewn
end
1
2
3
Make Harness
Strap Even
Sewn ends of
harness strap
loops MUST face
each other.
Pull Harness
Strap Across
Bottom of Shell
Harness strap
MUST lie in front of
harness adjustment
strap as shown. Push harness strap up
through other hip harness slot.
sewn
end
1
2
3
sewn
end
1
2
3
Thread Buckle and
Chest Clip
Harness strap ends
go through the back
of buckle tongues and
through the chest clip
front to back as shown.
sewn
end
1
2
3
7
5
6
8
55 56
Attach Harness
Strap Loops to
Splitter Plate
Sewn ends of the
harness strap loops
MUST face towards you.
DO NOT twist harness
strap or harness
adjustment strap.
Make sure the harness
strap loops are fitted completely on
both sides of the splitter plate.
sewn
end
1
2
3
sewn
end
1
2
3
sewn
end
1
2
3
9
Check your child’s fit often.
If you cannot achieve a snug
harness fit for your child, you may
need to adjust the harness system.
See pages 13−16.
To learn how to check harness
tightness, see pages 46−49.
Check the harness straps often for
any wear or damage.
Failure to place harness adjustment strap behind
the harness strap as shown can result in serious
injury or death.
Serious injury can include paralysis
and/or permanent brain injury.
DO NOT use a child restraint with damaged
harness straps.
WARNING
Aircraft Information Replacement and Expiration of Car Seat
57 58
DO NOT risk your child’s safety.
To keep your child as safe as possible, Dorel Juvenile Group strongly recommends
replacing the car seat even after a minor crash, even if it was not occupied at the time.
Replacement After a Minor Crash
The National Highway Traffic Safety Administration states that for a crash to be
considered minor ALL of the following MUST be true:
• Vehicle able to drive away from the crash site; AND
• Vehicle door nearest the car seat was not damaged; AND
• No passengers were injured; AND
• Airbags did not deploy; AND
• There is no visible damage to the car seat.
This restraint is certified for aircraft use.
Install the child restraint in a window
seat to avoid blocking the aisle. If the
aircraft lap belt is too short, ask the flight
attendant for a belt extender.
Use only on forward facing aircraft seats.
Contact the airline for their specific policies.
Some airlines may ask to see a label
stating that this child restraint is certified
for aircraft use.
There is an airplane
certification label located
on the side of this child
restraint as shown.
Rear-Facing
Aircraft Installation
Follow the vehicle belt
install steps on pages
29−32.
Forward-Facing
Aircraft Installation
Follow the vehicle belt
install steps on pages
39−41, skipping the
tether strap steps.
continued on next page
You MUST store lower anchor belt
and tether strap when installing with
aircraft belts.
WARNING
Child Restraint Use
59 60
If the crash your car seat was involved in meets ALL the criteria, you may not need to
replace the car seat.
If one or more of these criteria are not true or if you are uncertain of any of your
answers, replace the car seat immediately.
Replacement After a Moderate to Severe Crash
You must replace this car seat if it has been in a moderate to severe car crash.
This car seat is intended to protect a child in a single crash. During a crash, the car
seat and all of its parts absorb crash energy which can deform or weaken it. Damage
is not always visible. A damaged car seat must be replaced immediately.
Expiration
On the side of the child restraint there is a date of manufacture
label as shown. Do not use this child restraint more than 8 years
after the date of manufacture.
2024|05|01
COSCO SCENERA NEXT
NEVER take your child out of the child restraint while the vehicle is moving.
NEVER leave your child unattended.
Placing your child in a hot child restraint may result in burns.
DO NOT use a child restraint with damaged or missing parts.
DO NOT use a child restraint with cut, frayed, or damaged harnesses.
DO NOT substitute parts or try to modify the child restraint in any way.
DO NOT use any child restraint accessory except those approved by
Dorel Juvenile Group.
NEVER allow any child to play with this child restraint; it is not a toy.
DO NOT remove or cover up any of the warning labels on the child restraint.
This child restraint has been certified for use in passenger vehicles. DO NOT use in a boat,
on a motorcycle, or in a cargo van or bus where there are no seat belts or tether anchors.
Read all instructions for additional warnings.
WARNING
61 62
According to
accident statistics,
children are safer when properly
restrained in the rear seating positions
than in the front seating positions.
Rear seating positions are statistically
safer, whether you have air bags,
advanced air bags, or no air bags at all.
If you are not sure where to place the car
seat in your vehicle:
• Consult your vehicle owner’s manual; OR
• Contact Dorel Juvenile Group Consumer
Care Department; OR
• Visit your local Child Passenger Inspection
Station. Go to https://www.nhtsa.gov/
vehicle-safety/car-seats-and-booster-
seats to find your closest station.
NEVER place a child
rear-facing in a seating
position with an active
frontal air bag.
Check the vehicle owner’s manual
for more information about air bag/
child restraint use.
Use the child restraint
only on vehicle seats
that face forward.
DO NOT use on seats
that face the sides or
rear of the vehicle.
For vehicles without
a back seat, refer to your vehicle
owner’s manual.
To avoid your child being seriously
burned, take the following precautions:
• Park in the shade or where the sun does
not directly hit the car seat.
• Cover the car seat with a sheet or
blanket when not in use.
• Check for hot seat and buckles before
placing child in car seat.
To help protect your vehicle seat’s
upholstery from damage: You may use
an accessory approved by Dorel Juvenile
Group or a single layer towel underneath
and behind car seat.
Check the vehicle belt or lower
anchor belt before each use. Use
only if the belt can be tightened
properly and locked securely
in place.
Even when unoccupied, this child
restraint MUST be firmly secured
to the vehicle with the lower anchor
belt or with the vehicle seat belt.
In a crash or sudden stop, an
unsecured child restraint or booster
seat could injure occupants.
Vehicle Seating Position Installation in Vehicle
WARNING
WARNING
a
Registration and Safety Notices
Troubleshooting
63 64
If you don’t have the card or
if your address changes, you
will find the model number,
manufacture date, and line
code on the label located on
side of shell.
2024|05|01
COSCO SCENERA NEXT
Example of model number, line code,
and manufacture date.
Please complete the postage-paid registration
card that came with your child restraint,
and send it to us. Child restraints could be
recalled for safety reasons. You must register
this restraint to be reached in a recall.
Send your name, address, e-mail address if
available and the restraint’s model number
and manufacturing date to:
Dorel Juvenile Group, Inc.
Consumer Care Department
PO Box 2609
Columbus, IN 47202-2609
or call 1-800-544-1108 or register online at
www.djgusa.com/registration/carseat/us.
For recall information, call the U.S.
Government’s Vehicle Safety Hotline at
1-888-327-4236 (TTY: 1-800-424-9153), or
go to http://www.NHTSA.gov.
2024|05|01
COSCO SCENERA NEXT
Manufacture
Date
Line
Code
Model
Number
1. If the child restraint buckle or harness release lever sticks or you cannot get
the straps tight enough around child:
DO NOT LUBRICATE. Check around lever and retractor for dropped food, sticky spilled
drinks, dirt, leaves, etc. Clean with warm water and/or remove object with tweezers. If
you cannot get the harness to adjust and remain tight with the buckle securely locked,
do not use the child restraint.
2. If your harness twists:
Straighten the harness each time you put your child in the child restraint to help prevent
twisting. Lock the buckle and tighten harness and it will be ready for next use.
©2025 Dorel Juvenile Group, Inc. (800) 544-1108 www.coscokids.com. Styles and colors may vary. Los estilos y los colores pueden
variar. Made in USA from American and imported parts (including seat pad). Hecho en EE.UU. a partir de piezas americanas e importadas
(incluyendo la almohadilla del asiento). Distributed by (distribuido por) Dorel Juvenile Group, Inc., 2525 State St., Columbus, IN 47201-7494.
Dorel Juvenile Canada, 2233 Argentia Road, Suite 110, Mississauga, ON L5N 2X7. Representante exclusivo en Chile: DOREL JUVENILE
CHILE S.A. Av. del Parque 4161, oficina 602 A, Huechuraba, Santiago, Chile - Fono: 56 2 24971500 - www.infanti. cl - www.dorel.cl.
Importado y distribuido en Perú por: COMEXA COMERCIALIZADORA EXTRANJERA S.A. SUCURSAL DEL PERÚ - Los Libertadores 455, San
Isidro, Lima 27, Lima, Perú RUC 20431062870 – Fono: 4413029 – www.infanti.com.pe. En Centro América, Caribe y Ecuador por: Best
Brands Group S.A. – Av. Balboa, Bay Mall Plaza, Planta Baja, local 9, Panamá. - Fono: (507) 300 2884. En Colombia por: Baby Universe
S.A.S. - Vía 40 No. 77-29, Barranquilla, Colombia - Fono: (575) 353 1110 Importador: DJGM, S.A. DE C.V. Gabriel
Mancera No. 1041 Col. Del Valle, Benito Juárez C.P. 03100 México, Ciudad de México R.F.C. DJG140305GN9 Tel. (55)
67199202
Warranty
65 66
Dorel Juvenile Group, Inc. (DJG) warrants this product to the original retail purchaser
as follows:
This product is warranted against defective materials or workmanship for one year
from the date of original purchase. An original receipt is required to validate your
warranty. DJG will, at its option, provide replacement parts or replace this product.
DJG reserves the right to substitute if the part or model has been discontinued.
To make a claim under this warranty, please contact our Consumer Care Department
by phone: 1-800-544-1108; text: 1-812-652-2525; or chat with us:
www.coscokids.com. Our hours of operation are from 8:00 a.m. to 6:00 p.m. EST
Monday through Thursday and from 8:00 a.m. to 4:30 p.m. on Friday.
Proof of purchase is required and shipping charges are the responsibility
of the consumer.
Warranty Limitations: This warranty does not include damages which arise from
misuse or abuse of this product.
Limitation of Damages: The warranty and remedies as set forth are exclusive and
in lieu of all others, oral or written, expressed or implied. In no event will DJG or the
dealer selling this product be liable to you for any damages, including incidental or
consequential damages, arising out of the use or inability to use this product.
Limitation of warranties and other warranty terms and state law rights:
Any implied warranties, including implied warranties of the merchantability and fitness
for a particular purpose, shall be limited to the duration and terms of the express
written warranty. Some states do not allow limitations as to how long an implied
warranty lasts or the exclusion or limitation of incidental or consequential damages, so
the above limitations may not apply to you.
This warranty gives you specific legal rights, and you may have other rights, which
vary from state to state. Neither DJG nor the dealer selling this product authorized
any person to create for it any other warranty, obligation, or liability in connection with
this product.
Replacement Parts List
Dorel Juvenile Group Information
67 68
Buckle Assembly
Harness Strap
Seat Pad Set
Chest Clip
Cup Holder
Tether Kit
Lower Anchor Belt
Instructions
Locking Clip
If requested color is not available,
similar color will be substituted.
Prices are subject to change.
Applicable tax and shipping &
handling will be added.
For parts availability and questions,
please call:
1-800-544-1108; text:
1-812-652-2525; or chat with us:
www.coscokids.com
Hours of Operation:
M-TH from 8:00 AM to 6:00 PM EST
FRI from 8:00 AM to 4:30 PM EST
If you already know which parts you
need, you may complete your order with a
credit card by calling us at
1-800-544-1108.
See list for available parts. We accept
Visa or MasterCard.
Thank you for choosing this child
restraint. The DJG family is committed
to creating child restraints with the most
comfort and convenience available today.
Remember, parents are a child’s first
teachers and examples. If you always
buckle your seat belt, your child will
think it is the natural thing to do. Make
it a firm rule that the vehicle does not
go until everyone is buckled up. Make
no exceptions.
No one can predict if use of a child
restraint will prevent injury or death
in a particular crash. However, when
combined with careful driving, proper use
of a child restraint can lower a child’s risk
of injury or death in most crashes.
Your child’s safety is worth the time
it will take to read and follow these
instructions. After reading, if you still
have questions or have any concerns
with this child restraint, please contact
our Consumer Care Department:
Call: 1-800-544-1108
Text: 1-812-652-2525
Chat: www.coscokids.com
Hours of Operation:
M−TH from 8:00 AM to 6:00 PM EST
FRI from 8:00 AM to 4:30 PM EST
