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The yellow indicator lamp
sible critical situation is detected when you
indicate in the direction of the detected vehi-
cle.
The faster another vehicle approaches, the
earlier there is a corresponding display in the
exterior mirror.
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 correc-
tive steering intervention when changing
lanes during a possible critical situation (in-
formation level, warning level). The steering
intervention also occurs when the turn signal
is activated 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 sys-
tems menu in the Infotainment system.
Automatic deactivation
The lane change system will switch off auto-
matically if the radar sensors are permanent-
ly 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 instru-
ment cluster display.
If you use the factory-fitted trailer towing
coupling and have set up the necessary elec-
trical connection, the lane change system
switches off automatically. After you have
disconnected the electrical connection, the
lane change system is switched back on au-
tomatically.
If the trailer towing coupling is not factory-
fitted, you must manually switch off the lane
change system and then switch it back on
again.
Brightness
The brightness of the visual display will
change automatically depending on the am-
bient light levels.
174
Driver assist systems
flashes if a pos-
You can adjust the basic brightness of the
display in the Assist systems menu in the In-
fotainment system. The lane change system
is not active during the setting procedure.
Troubleshooting
Please refer to
ter on page 172.
The indicator lamp lights up yellow. The yel-
low central warning lamp
— Go to a qualified workshop.
No sensor visibility, fault message, system
switches itself off.
— Clean radar sensors or remove stickers or
accessories from radar sensors
→ page 358.
— Check for any visible damage.
The system is not responding as expected.
— The radar sensors are dirty → page 358.
The sensor visibility may be impaired by
dirt and snow or also residue from clean-
ing agents or coatings.
— The general conditions for system opera-
tion have not been met→ page 172.
— The radar sensors are covered by water.
— The vehicle is damaged in the area of the
radar sensors, e.g. caused by parking colli-
sions.
— The detection ranges of the radar sensors
are blocked by add-on parts, e.g. bicycle
carriers.
— Changes have been made to the paintwork
in the area of the radar sensors or struc-
tural modifications have been made, e.g.
on the vehicle front end or the running
gear.
— The side windows have been retrofitted
with tinted window films.
at the start of the chap-
Lane change system fault.
also lights up.
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