x
Always observe the area around the vehicle with
care and watch the road ahead while driving.
x
If the camera's field of view is dirty, covered or
damaged, the function of the lane keeping sys-
tem may be impaired.
Driving with the lane keeping sys-
tem
Please refer to
at the start of the chapter on
page 169.
Switching on and off
Depending on country, the lane keeping system is
always switched on when the ignition is switched
on. You can also switch the lane keeping system on
and off in the Assist systems menu of the Infotain-
ment system and instrument cluster and view the
current system status there.
The lane keeping system (Lane Assist) is also switch-
ed on when the comfort drive function (Travel As-
sist) is switched on.
If there is a system fault, the lane keeping sys-
tem can deactivate itself automatically.
Speed range
When road lane markings can be detected, the lane
keeping system is ready to intervene at speeds
above around 60 km/h (around 35 mph) (system sta-
tus active).
Displays
Fig. 152
On the instrument cluster display: lane keep-
ing system displays.
1
Road lane markings detected. System not regu-
lating.
2
Road lane markings detected. System is actively
intervening on the indicated side.
3
System not regulating.
With some equipment levels, a display is also shown
on the Head-up Display → page 24.
Depending on the situation and the instrument clus-
ter version, the following warning lamps light up:
System is active and ready to per-
form control intervention.
System intervention (corrective
steering intervention).
If no warning lamp lights up, the system is not ready
to intervene (passive system status) or is switched
off.
When the indicator is on, the system temporarily
switches to passive mode to allow manual lane
changes. The system will be switched to passive
mode if the corrective steering intervention by the
system is overridden by a strong steering movement
by the driver.
If the comfort drive function (Travel Assist) is
actively performing a control operation, there
is no steering intervention and the lane keeping sys-
tem is not displayed.
Driver intervention prompt
If there is no steering activity, the system prompts
you to drive in the middle of your lane by means of
acoustic warnings and a display on the instrument
cluster.
If you do not react, the system will switch to passive
state.
Depending on the equipment level, Emergency As-
sist may be activated.
Independently of steering activity, you will be addi-
tionally requested to drive in the middle of the lane
again with a display on the instrument cluster dis-
play and with acoustic warnings if the corrective
steering intervention takes place for an extended
time.
Steering wheel vibration
The following situations can lead to vibration of the
steering wheel:
— The system can no longer detect a lane during
a major steering intervention.
You can also select the option
Vibration
or
Steering wheel
vibration
in the Assist systems menu of the Infotain-
ment system. In this case, the steering wheel will vi-
brate if the vehicle drives over a detected road lane
marking when the lane keeping system is active.
or
or
170
Driver assist systems
