Tanza
Belt-Positioning Booster Car Seat
Your model may look different than one shown.
Read all instructions before using this booster seat.
KEEP INSTRUCTIONS FOR FUTURE USE.
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.
4358-8678 04.10.25
8678
Text 1-812-652-2525
(US and Canada only, carrier fees may apply)
Visit www.maxicosi.com
Call 1-800-544-1108
©2025 Dorel Juvenile Group, Inc. (800) 951-4113 www.maxicosi.com. Styles, colors, and labeling may vary. Made in
China. Distributed by 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
Learn More
Email [email protected]
2
Getting Started .........................................3
Parts of the Booster Seat .................4
Accessory Use ...................................... 6
Booster Seat Requirements ............7
Unfolding the Booster Seat .............8
Adjusting the Headrest .....................9
Booster Seat Mode .............................10
Booster Seat
Child Fit Requirements ...................12
Booster Seat Use in Vehicle ......... 13
Folding the Booster Seat ...............18
Wash and Care......................................19
Removing the Seat Pad
Set for Cleaning ................................20
Table of Contents
Cleaning the Seat Pad Set,
Storage Bag, and Booster Seat
.....22
Installing the Seat Pad Set ...........23
Safety Information ................................25
LATCH Lower Anchor Bars
and Vehicle Belt Information ........26
Child Restraint Use ..........................28
Vehicle Seating Position ................29
Installation in Vehicle ......................30
Replacement and Expiration ........ 31
Registration and
Safety Notices ...................................32
Warranty .............................................33
Replacement Parts List .................. 35
1
Measure
Your Child
2
Unfold the
Booster Seat
3
Install the
Booster Seat in
Your Vehicle
4
Make Any
Adjustments
to Properly Fit
Your Child and
Buckle Up
Getting Started
To help you get started using your child’s new booster seat (also known
as a car seat or a child restraint), these are the four main tasks you’ll need
to complete.
54
Back
Rigid Latch Connectors
Headrest
Adjustment
Handle
Folding Handle
Your model may look dierent than one shown.
Rigid Latch Release Handle
Parts of the Booster Seat
Front
Cup Holder*
Folded
Rigid Latch
Connector
Release Buttons
Carry Handle
Adjustable
Headrest
Backrest
Instruction Manual
Storage
(in the
compartment under
the seat pad)
Shoulder
Belt-Positioning
Guides
Lap Belt
Path Guide
*See page 6 for accessory use.
76
Storage Bag
Use the storage bag to carry and store
the folded booster seat. Unzip the bag,
place the folded booster seat in the
bag, and then zip it to carry it.
Accessory Use
Removable Cup Holder
To install the cup holder: Insert the cup holder
posts into the two holes through the slot in the
seat pad and slide the cup holder into place.
To remove the cup holder: Slide the cup holder
posts out of the holes in the seat pad and lift the
cup holder out.
Your child’s height, weight, and age determine
how a 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.
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 using this car seat.
Booster Seat Requirements
BOOSTER SEAT MODE
40–100 lb (18.1–45.4 kg) and
43.4–57 in. (110.1–144.8 cm)
In this car seat, your child can remain
in the Booster Seat until they fit the
vehicle’s lap and shoulder seat belt
properly without a Booster Seat OR
outgrow any one of the above.
Booster Seat Child Fit
Requirements PAGE 12
School-Aged Children
Children can only use a belt-positioning booster car
seat once they outgrow forward-facing harness weight
or height limits. Children must use the belt-positioning
booster mode until the vehicle’s lap and shoulder seat
belt fit them properly without the belt-positioning booster.
WARNING
98
CLICK
CLICK
Unfolding the Booster Seat
1
Continue to lift the backrest all the way up until it clicks
into the upright position.
Press the folding handle and
start lifting the backrest up.
2
Adjusting the Headrest
Press the headrest
adjustment handle while
pulling up or pushing down
the headrest to raise or lower
it to the desired position.
The headrest has ten
height positions. Choose
the one that meets the fit
requirements on page 12.
10 11
Booster Seat Mode
Warning! Use only the vehicle’s
lap and shoulder belt system
when restraining the child in this
booster seat.
DO NOT use only
the lap belt when
using this seat as
a booster seat. The
shoulder belt MUST
always be adjusted
snugly across the
child’s chest.
WARNING
NEVER place shoulder belt
under the child’s arms or behind
their back.
DO NOT use this booster seat if
the top of your child’s ears are
above the top of the booster
seat’s headrest.
40–100 lb (18.1–45.4 kg) and
43.4–57 in. (110.1–144.8 cm)
In this car seat, your child can remain in the
Booster Seat until they fit the vehicle’s lap and
shoulder seat belt properly without a Booster
Seat OR outgrow any one of the following:
• Weight limit: 100 lb (45.4 kg); OR
• Height limit: 57 in. (144.8 cm); OR
• Booster Seat Child Fit Requirements
PAGE 12
Booster Seat Use in Vehicle PAGE 13
12 13
continued on next page
Before you begin:
• Review your vehicle owner’s
manual to locate the LATCH:
lower anchor seating positions.
• Determine whether you will
be using both the rigid LATCH
connectors and the lap/
shoulder belt or only the lap/
shoulder belt with the booster
seat. See also LATCH Lower
Anchor Bars and Vehicle Belt
Information on page 26.
Booster Seat Use in Vehicle
DO NOT use the
LATCH system if the
LATCH anchor bars are
above the seat bight.
DO NOT use the
LATCH system if
the seat belt or
seat belt buckle
is between the
LATCH anchors.
DO NOT use the
LATCH system if the
seat belt or seat belt
buckle is not easily
accessible with the
booster seat secured
to the anchors.
WARNING
Booster Seat Child Fit Requirements
5 in. (12.7 cm)
1
Check the
head position
The top of your child’s
ears should NEVER be
above the top of the
booster seat’s headrest.
Adjust the headrest if
needed (see page 9).
5 in. (12.7 cm)
Check the
vehicle position
DO NOT use the
booster seat if your
child’s head is less than
5 in. (12.7 cm) below
the roof of the vehicle.
2
5 in. (12.7 cm)
Check the shoulder
belt position
The shoulder belt
should lay snugly
across the center of
your child’s shoulder
and across their chest.
3
5 in. (12.7 cm)
Check the lap
belt position
The lap belt should
lay snugly across
your child’s hips, NOT
on their stomach.
4
1514 1514
continued on next page
1
Extend the rigid LATCH connectors
Skip to step 2 if you are not using rigid LATCH connectors.
a. Pull the rigid latch handle at the front of the booster seat.
b. Both rigid latches will automatically extend from the
bottom rear of the seat.
a
b
Place the booster seat
forward facing in the vehicle
The back of the booster seat should
be flat against the vehicle seatback.
The vehicle seatback MUST be in the
upright position, but you can adjust
the angle slightly to better match the
angle of the booster seat. Refer to the
vehicle owner’s manual for how to
adjust the vehicle seatback.
2
If your vehicle has a
headrest that interferes
with a flush booster seat
fit, refer to your vehicle
owner’s manual to check
whether it can be removed
or adjusted, or if there are
other seating locations to
install the booster seat.
3
Attach the rigid LATCH connectors to the vehicle
lower anchors
Skip to step 4 if you are not using rigid LATCH connectors.
a. Align the connectors with the lower anchors. Push
the booster seat towards the back of the vehicle seat
while holding the rigid latch connector release buttons
until both connectors are attached to the anchors.
Once the connectors are attached, release the buttons
and continue pushing the booster seat towards the
vehicle seat and the connectors will ratchet into the
booster seat as you push it into the seat cushions.
b. Verify the booster seat is securely attached to the lower
anchors by checking for the green indicators next to
both rigid LATCH connector release buttons AND by
pulling the booster seat away from the vehicle seatback.
If the green does not appear next to either button or
the connectors are not properly connected to the lower
anchors when you pull the booster seat away from
the vehicle seatback, then make sure the connectors
are fully extended. Push the booster seat back further
against the vehicle seatback or repeat steps 1–3.
1716
4
Position the lap
belt on your child
Route the lap belt portion
of the vehicle belt under
the lap belt path guide.
The shoulder belt MUST GO
OVER the lap belt path guide
on the vehicle buckle side.
The lap belt should lay
snugly across your child’s
hips, not on their stomach.
Have your child sit
in the booster seat
The top of your child’s
ears should never be
above the top of the
booster seat’s headrest.
DO NOT use the booster
seat if your child’s head
is less than 5 in. (12 cm)
below the roof of the car.
To adjust the headrest,
see page 9.
Buckle the vehicle belt
Pull the shoulder belt up
to tighten it. Consult your
vehicle owner’s manual
for proper seat belt usage.
5 6
Position the shoulder belt on your child
Thread the shoulder belt through the belt-positioning
guide in the headrest.
Pull the shoulder belt up to tighten it so that it lies
snugly across the center of your child’s shoulder
and across their chest, not on their face and neck.
7
FINISHED!
Check periodically to
make sure your child
has not moved out of
position and loosened
the shoulder belt.
If you are not using
the rigid LATCH
connectors, keep the
booster seat securely
belted and buckled
even when unoccupied.
18
Folding the Booster Seat
CLICK
Before folding the booster seat,
use the rigid LATCH release
buttons to retract both connectors
and remove them from the lower
anchors. See page 27.
Remove the cup holder before
folding the booster seat. See page 3.
To ensure the booster seat is as
compact as possible when folded,
move the headrest to the third to
lowest position. See page 9.
CLICK
CLICK
Press the folding handle and push the backrest all the way down until
it clicks and is completely folded in half.
Removing the Seat Pad
Set for Cleaning ......................................................... 20
Cleaning the Seat Pad Set,
Storage Bag, and Booster Seat ............................ 22
Installing the Seat Pad Set .................................... 23
Wash and Care
2120
1
Gently pull the top of
the pad away from the
side wing.
Continue to pull the pad
off the wing and away
from the seat while gently
pulling the remainder
of the backrest pad off
the other wing until it is
completely off the seat.
2
Gently pull the side of
the seat pad below the
wing away from the
booster seat.
3
Make sure the booster
seat is unfolded when
removing the seat pad
set. See page 8.
You may need to raise
or lower the headrest
for easier seat pad set
removal. See page 9.
4
Gently pull the seat
pad from the sides
and front of the
booster seat bottom.
Pull to separate
the hook and loop
fastening strip
under the seat pad.
5
From the back of the
seat, pull the seat
pad off the headrest.
6
Lift the seat pad up and
off the booster seat.
7
Removing the Seat Pad Set for Cleaning
2322
Cleaning the Seat Pad Set, Storage Bag, and Booster Seat
To clean the seat pad set and storage bag:
Machine wash separately with cold water on gentle cycle. DO NOT use bleach. Tumble dry separately for 10–12
minutes on low heat.
Remove immediately.
To clean the booster seat:
Spot clean using warm sudsy water and a damp cloth. DO NOT submerge any part of the seat into water.
1
From the front of the
booster seat, pull the seat
pad onto the seat starting
with the headrest.
Tuck the pad in
completely around the
edges of the headrest.
2
You may need to raise
or lower the headrest
for easier installation of
the seat pad set. See
Adjusting the Headrest
on page 9.
Reattach the hook and
loop fastening strip
under the seat pad.
3
Installing the Seat Pad Set
24
LATCH Lower Anchor Bars and
Vehicle Belt Information ......................................... 26
Child Restraint Use ................................................... 28
Vehicle Seating Position ......................................... 29
Installation in Vehicle ............................................... 30
Replacement and Expiration ................................. 31
Registration and Safety Notices .......................... 32
Warranty ...................................................................... 33
Replacement Parts List ........................................... 35
Safety Information
4
Pull the seat pad over
the front of the seat.
Tuck the pad completely
around all edges. Make
sure the side of the
pads below the wings
are also fully secured.
Place the backrest pad over both wings.
Starting at the top of the wings and
continuing around the bottom, tuck the pad
completely around all edges making sure
all sides of the wing pads are fully secured.
5
DO NOT use the child restraint without the seat pad. Failure to
do this can result in serious injury. Serious injury can include
paralysis and/or permanent brain injury.
WARNING
2726
To use the rigid LATCH
connectors, see page 14.
To remove the rigid LATCH
connectors from the vehicle
anchors: Press in the rigid
LATCH connector release button
and slide it towards the front of
the seat to retract the connector.
Repeat on the other side.
NEVER use the following
with this car seat:
• Emergency locking
retractor lap-only belt
• Inflatable seat belts
The lower anchors of LATCH (Lower Anchors and Tethers
for CHildren) is a universal system for installing car seats
without using vehicle seat belts. The rigid LATCH connectors
can ONLY be used in vehicles that have the lower anchor
bars installed in designated seating positions. Most vehicles
manufactured after September 2022 are equipped with
LATCH: lower anchor bars. Check your vehicle owner’s
manual to see which seating positions may be equipped with
LATCH: lower anchor bars. Rigid LATCH connectors cannot
be used with raised LATCH anchors in the vehicle seatback.
You MUST review your vehicle
owner’s manual.
Check your vehicle owner’s manual to
determine the vehicle belt and seating
positions available for installing a booster
seat and which seating positions may be
equipped with LATCH: lower anchor bars.
Your vehicle’s features may be considerably
different than those pictured here.
LATCH Lower Anchor Bars and Vehicle Belt Information
2928
Vehicle Seating Position
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.
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.
WARNING
Child Restraint Use
This restraint is not
certified for aircraft use
because aircraft seats do
not have shoulder belts.
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 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.
Read all instructions for additional warnings.
WARNING
3130
Replacement and Expiration
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.
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 bottom of the car seat, there is
a date of manufacture label as shown.
DO NOT use this car seat more than
10 years after the date of manufacture.
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 before each use. Use only
if the belt can be tightened properly and securely.
Even when unoccupied, this booster seat
MUST be firmly secured to the vehicle with the
vehicle seat belt.
In a crash or sudden stop, an unsecured
booster seat could injure occupants.
Installation in Vehicle
WARNING
3332
Warranty
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
or text: 1-812-652-2525. 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.
Registration and Safety Notices
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, email address if available
and the restraint’s model number and manufacturing
date to:
Dorel Juvenile Group
P.O. Box 2609
Columbus, IN 47202
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 www.NHTSA.gov.
Example of model number,
manufacture date, and line code.
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
the bottom of the car seat.
Brand Car Seat
2025/03/01
continued on next page
3534
• Seat Pad Set
• Cup Holder
• Storage Bag
• Instructions
For parts availability and questions, call, text, email, or chat. See the
Consumer Care contact information on the back cover of this manual.
If the requested color is not available, a similar color will be substituted.
Applicable tax and shipping & handling will also be added.
Replacement Parts List
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.
Warranty
