Driving with the lane change sys-
tem
Please refer to
at the start of the chapter on
page 174.
Fig. 156
In the exterior mirror housing: visual displays
of the lane change system.
Switching on and off
You can switch the lane change system on and off in
the Assist systems menu of the Infotainment sys-
tem. When the lane change system is switched on,
the yellow indicator lamp
in the exterior mirror
housing lights up once briefly.
This most recent system setting is retained even af-
ter the ignition has been switched off and on.
Function
When switched on, the lane change system is active
from a speed of around 15 km/h (9 mph). The lane
change system is deactivated at a vehicle speed be-
low 10 km/h (6 mph).
The yellow indicator lamp
lights up in the respec-
tive exterior mirror housing in the following driving
situations:
— If your vehicle is being overtaken.
— When overtaking another vehicle with a speed
difference of up to approximately 15 km/h
(9 mph). No display will be shown if the overtak-
ing manoeuvre is much faster.
The yellow indicator lamp
flashes if a potentially
critical situation is detected when you indicate in the
direction of the detected vehicle.
The faster another vehicle approaches, the earlier
there is a corresponding display in the exterior mir-
ror.
Lane change system “Side Assist Plus”
If the vehicle is equipped with a lane keeping system
(Lane Assist) and the system is switched on, the
driver is warned by a corrective steering intervention
when changing lanes during a possible critical situa-
tion (information level, warning level). The steering
intervention also occurs when the turn signal is acti-
vated for the corresponding direction. If the steering
intervention is overridden by the driver, the steering
wheel vibrates to give an additional warning. For
this, steering wheel vibration must be activated in
the Assist systems menu in the Infotainment sys-
tem.
Automatic deactivation
The lane change system will switch off automatically
if the radar sensors are permanently covered. This
can be caused by a layer of ice or snow in front of
the radar sensor, for example.
A text message will be shown on the instrument
cluster display.
If the lane change system sensor has been automat-
ically deactivated, the system cannot be activated
until the ignition has been switched off and back on
again.
The lane change system is switched off automatical-
ly when the factory-fitted towing bracket is electri-
cally connected to a trailer or similar. The lane
change system is automatically switched on again
when the trailer is unhitched from the vehicle. The
lane change system must be switched off manually
for non-factory-fitted towing brackets.
Brightness
The brightness of the visual display will change au-
tomatically depending on the ambient light levels.
You can adjust the basic brightness of the display in
the Assist systems menu in the Infotainment sys-
tem. The lane change system is not active during the
setting procedure.
Troubleshooting
Please refer to
at the start of the chapter on
page 174.
Lane change system fault.
The indicator lamp lights up yellow. The yellow cen-
tral warning lamp
also lights up.
— Go to a qualified workshop.
No sensor visibility, fault message, system switches
itself off.
— Clean radar sensors or remove stickers or acces-
sories from radar sensors → page 350.
Lane change system
175
3G0012720AK
