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If you leave your lane, under certain circum-
stances the vehicle will brake briefly on one
side. This is meant to assist you in bringing the
vehicle back to the original lane.
If a lane-correcting brake application occurs,
display : appears in the multifunction dis-
play.
A lane-correcting brake application can be
made after driving over a lane marking recog-
nized as being solid or broken. Before this, a
warning must have been issued by means of a
vibration through the steering wheel. In addi-
tion, a lane with lane markings on both sides
must have been detected.
In the case of a broken lane marking being
detected, a lane-correcting brake application
can only be made if a vehicle has been detec-
ted in the adjacent lane. The following vehicles
can have an influence on brake application:
oncoming traffic, vehicles that are overtaking
and vehicles that are driving parallel to your
vehicle.
i
A further lane-correcting brake application
can only occur after your vehicle has
returned to the original lane.
No lane-correcting brake application occurs if:
R
you clearly and actively steer, brake or
accelerate
R
you cut the corner on a sharp bend
R
you have switched on the turn signal
R
a driving safety system intervenes, e.g.
ESP
®
, PRE-SAFE
®
Brake or Active Blind Spot
Assist
R
you have adopted a sporty driving style with
high cornering speeds or high rates of accel-
eration
R
ESP
®
is switched off
R
the transmission is not in position h
R
an obstacle has been detected in the lane in
which you are driving
R
when a loss of tire pressure or a defective
tire has been detected and displayed
There is a possibility that the Active Lane
Keeping Assist could misjudge the given traffic
situation. An inappropriate brake application
may be interrupted at any time if you:
R
steer slightly in the opposite direction
R
switch on the turn signal
R
clearly brake or accelerate
A lane-correcting brake application is interrup-
ted automatically if:
R
a driving safety system intervenes, e.g.
ESP
®
, PRE-SAFE
®
Brake or Active Blind Spot
Assist
R
lane markings are no longer detected
Switching on Active Lane Keeping Assist
X
Switch on Active Lane Keeping Assist using
the on-board computer; to do so, select
Standard
Standard or AdaptiveAdaptive (Y page 199).
If you drive at speeds above 40 mph
(60 km/h) and lane markings are detected,
the lines in the assistance graphic display
are shown in green (Y page 198). Active
Lane Keeping Assist is ready for use.
When StandardStandard is selected,
No warning vibration occurs if:
R
you switch on the turn signals. In this
event, the warnings are suppressed for a
certain period of time.
R
a driving safety system intervenes, such
as ABS, BAS or ESP
®
.
When AdaptiveAdaptive is selected,
No warning vibration occurs if:
R
you switch on the turn signals. In this
event, the warnings are suppressed for a
certain period of time.
R
a driving safety system intervenes, e.g.
ABS, BAS or ESP
®
.
R
you accelerate hard, e.g. kickdown.
R
you brake hard.
R
you steer actively, e.g. swerve to avoid an
obstacle or change lanes quickly.
R
you cut the corner on a sharp bend.
Driving systems
189
Driving and parking
Z
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