Driving and operating 241
● banked roads
● winding or hilly roads
● poor lighting conditions
● sudden lighting changes
● dazzling light, e.g. caused by the
sun or artificial illumination is
shining directly into the camera
lens
● adverse environmental
conditions, e.g. heavy rain, fog,
or snow
● vehicle modifications, e.g. tyres
● roads with poor lane markings
Lane keep assist
Lane keep assist supports the driver
to avoid unintended leaving of the
lane. The front camera observes road
edges, as well as the lane markings
between which the vehicle is driving.
If the vehicle approaches a road edge
or a lane marking, the steering wheel
is gently turned so that the vehicle
turns back into the lane. The driver
will notice a turning movement of the
steering wheel. Turn steering wheel
in same direction, if the system does
not steer sufficiently. Turn steering
wheel gently into opposite direction, if
lane change is intended.
When the system steers to correct the
trajectory of the vehicle, a flashes
yellow in the Driver Information
Centre. Lane keep assist does not
continuously steer the vehicle.
Unintended lane departure is not
assumed by the system when the turn
lights are operated and during few
seconds after turn lights have been
switched off.
The system will inform the driver with
a message and a chime if there is an
ongoing correction for more than
ten seconds. If the driver is still unable
to keep the vehicle in the lane, the
correction interrupts after a short
time.
When hands-off driving is detected
during a correction a warning
message appears in the Driver
Information Centre, accompanied by
a warning chime. Every further
hands-off detection prolongs the
warning chime duration.
A lane departure warning in the Driver
Information Centre alerts when the
system cannot hold the vehicle within
the lane and immediate driver´s
action is required.
Note
The system might be inactive if it
detects lanes which are too narrow,
too wide or too curved.
For a correct operation of the system,
the following preconditions have to be
fulfilled:
● vehicle speed must be between
65 km/h and 180 km/h
● the turn lights are not activated
● the electronic stability control is
activated and not in operation
● no plug is connected to the power
outlet of the trailer hitch
● no dynamic driving, i.e. pressure
on the brake or accelerator pedal
● lane bounderies can be clearly
detected by the system
● no temporary spare wheel is
used
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