Operation Manual

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the transmission is not in position D.
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an obstacle has been detected in the lane in
which you are driving.
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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 traf-
fic situation. An inappropriate brake applica-
tion may be interrupted at any time if you:
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steer slightly in the opposite direction
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switch on the turn signal
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clearly brake or accelerate
A lane-correcting brake application is inter-
rupted automatically if:
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a driving safety system intervenes, e.g.
ESP
®
, PRE-SAFE
®
Brake or Active Blind
Spot Assist.
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lane markings can no longer be recognized.
Switching on Active Lane Keeping Assist
X
Switch on Active Lane Keeping Assist using
the on-board computer; to do so, select
StandardStandard or AdaptiveAdaptive (Y page 237).
If you drive at speeds above 40 mph
(60 km/h) and lane markings are detected,
the lines in the assistance graphics display
(Y page 235) are shown in green. Active
Lane Keeping Assist is ready for use.
If StandardStandard is selected, no warning vibra-
tion occurs if:
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you have switched on the turn signals. In
this event, the warnings are suppressed
for a certain period of time.
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a driving safety system intervenes, such
as ABS, BAS or ESP
®
.
When AdaptiveAdaptive is selected, no warning
vibration occurs if:
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you have switched on the turn signals. In
this event, the warnings are suppressed
for a certain period of time.
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a driving safety system intervenes, e.g.
ABS, BAS or ESP
®
.
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you accelerate hard, e.g. kickdown.
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you brake hard.
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you steer actively, e.g. swerve to avoid an
obstacle or change lanes quickly.
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you cut the corner on a sharp bend.
In order that you are warned only when nec-
essary and in good time if you cross the lane
marking, the system recognizes certain con-
ditions and warns you accordingly.
The warning vibration occurs earlier if:
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you approach the outer lane marking on a
bend.
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the road has very wide lanes, e.g. a high-
way.
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the system recognizes solid lane markings.
The warning vibration occurs later if:
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the road has narrow lanes.
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you cut the corner on a bend.
Driving systems
223
Driving and parking
Z