Page 143 of 311

Lighting141Pressing indicator lever once
switches on manual high beam
without high beam assist.
High beam assist switches
automatically to low beam when:
● Driving in urban areas.
● Reverse parking function is active.
● Front or rear fog lights are switched on.
If there are no restrictions detected, the system switches back to high
beam.
DeactivationIndicator lever with or without MENU
button
If high beam assist is active and high
beam is on, pull indicator lever once
to deactivate high beam assist.
If high beam assist is active and high
beam is off, push indicator lever twice
to deactivate high beam assist.
Pushing the indicator lever to activate manual high beam will also
deactivate high beam assist.Indicator lever with f button
If high beam assist is active and high
beam is on, press f once or pull
indicator lever once to deactivate high
beam assist.
If high beam assist is active and high
beam is off, press f once to
deactivate high beam assist.
Pushing the indicator lever to activate manual high beam will also
deactivate high beam assist.Headlight flash in conjunction with
high beam assist
Headlight flash by pulling indicator
lever once will not deactivate high beam assist when high beam is off.
Headlight flash by pulling indicator
lever once deactivates high beam
assist when high beam is on.
Dynamic automatic headlight
levelling
To prevent oncoming traffic from being dazzled, headlight levelling is
automatically adjusted based on
inclination information measured by
front and rear axle, acceleration or
deceleration and vehicle speed.
Headlights when driving abroad
3 138.
Fault in LED headlight system
When the system detects a failure in
the LED headlight system, it selects a preset position to avoid dazzling of
oncoming traffic. A warning is
displayed in the Driver Information Centre.
Hazard warning flashers
Operated by pressing ¨.
Page 186 of 311

184Driving and operating● The Traction Control system orElectronic Stability Control is
operating.
● Parking brake is applied.
● Simultaneous pressing RES/+
and brake pedal deactivates
cruise control and will delete stored speed.
Resume stored speed
Turn thumb wheel to RES/+ at a
speed above 30 km/h. The stored
speed will be obtained.
Switching off
Press m, control indicator m in
instrument cluster extinguishes. The
stored speed is deleted.
Pressing L to activate the speed
limiter or switching off the ignition also switches off cruise control and
deletes the stored speed.
Speed limiter The speed limiter prevents the
vehicle exceeding a preset maximum
speed.The maximum speed can be set at
speeds above 25 km/h up to
200 km/h.
The driver can only accelerate up to
the preset speed. Deviations from the
limited speed may occur when driving
downhill.
The preset speed limit is displayed in
the Driver Information Centre when
the system is active.
Activation
Illustrations show different versions.
Press L, symbol L illuminates in the
Driver Information Centre.
If cruise control has been activated
before, it is switched off when speed
limiter is activated and the control
indicator m extinguishes.
Set speed limit
Accelerate to the desired speed and
briefly turn thumb wheel to SET/-: the
current speed is stored as maximum speed.
On Midlevel display L and the speed
limit is displayed.
Page 215 of 311
Driving and operating213Once activated and when the traffic
sign detection page is currently not
displayed, newly detected speed limit
and no passing signs are displayed
as pop-up alerts in the Driver
Information Centre.
On Midlevel Display, when traffic sign assistant page is displayed, press
SET/CLR on the turn signal lever.
Select Alerts ON or Alerts OFF by
turning the adjuster wheel and press
SET/CLR .
On Uplevel Display, when traffic sign
assistant page is displayed, press q
on the steering wheel controls.Activate alerts by setting J,
deactivate alerts by setting I via
button 9.
Pop-up alert is displayed for approx.
eight seconds in the Driver
Information Centre.
System reset
The content of the traffic sign display can be cleared in the setting menu of the traffic sign assistant page by
selecting Reset and confirm by
pressing SET/CLR on the turn signal
lever or 9 on the steering wheel
controls.
Page 216 of 311

214Driving and operatingAlternatively, SET/CLR or 9 can be
pressed for three seconds to clear the
content of the page.
Upon successful reset, a chime will
sound and the following “Default
Sign” is indicated until the next traffic
sign is detected or provided by map
data of the navigation system.
In some cases, traffic sign assistant is
cleared up automatically by the
system.
Clearing of traffic signs
There are different scenarios that
lead to clearing the currently
displayed traffic signs. After clearing,
the “Default Sign” or a sign from
navigation map data is displayed in
the Driver Information Centre.
Reasons for signs being cleared:
● A predefined distance was driven
or time has elapsed (differs for
each sign type)
● Vehicle drives through a turn
● If no navigation map data is available and speed drops below52 km/h (city entry detection)
● If navigation map data is available and a city entry/exit was
detected due to map data change
Traffic sign detection in
conjunction with navigation
system
If the vehicle is equipped with a
navigation system, the currently
displayed sign can either originate
from optical sign detection or from the
map data.
If the currently displayed sign
originates from map data and the map
information changes, a new sign will
be displayed. This may lead to
detection of a new sign although no
sign on the road may have been
passed.Fault
Traffic sign assistant may not operate
correctly if:
● The area of the windscreen, where the front camera is
located, is not clean or affected
by foreign items, e.g. stickers.
● Traffic signs are completely or partially covered or difficult to
discern.
● There are adverse environmental
conditions, e.g. heavy rain, snow,
direct sunlight or shadows.
● Traffic signs are incorrectly mounted or damaged.
● Traffic signs do not comply with the Vienna Convention on traffic
signs (Wiener Übereinkommen
über Straßenverkehrszeichen).Caution
The system is intended to help the driver within a defined speed
range to discern certain traffic