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114Instruments and controlsNotice
In order to be available and
operational, the system requires
functioning vehicle electrics, mobile
service and GLONASS satellite link.
Depending on equipment, a backup
battery is used.
Control buttons
SOS button K
Press K and after a prompt press
again to establish an emergency
connection.
TECT button J
Press J for cancellation of a call or for
service (technician use only).
Status LED
The system provides feedback via
voice messages and an LED.Green:The system is ready or
within the recall time,
during which the advisor
can call back after an
established connection
(up to approx. two hours,
also possible with ignition
off).Green
flashing:The system is dialling,
data transmitting or a
voice connection is
established.Red:The system is booting up
for maximum 15 seconds
after switching on ignition,
then the LED turns green. If the LED stays red or
turns from green to red, a
problem arose seek the
assistance of a workshop.Red
flashing:Call is not possible, e.g.
because of unavailable
mobile network.Red /
green
flashing:System is in test mode.
Do not press any button
and wait until time-out.Off:System is off.
Notice
In very cold conditions it may take a
while to warm up the backup battery.
When operational, the red LED turns green.
Seek the assistance of a workshop if
the LED does not illuminate after
switching on the ignition.
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Lighting115LightingExterior lighting.......................... 115
Light switch .............................. 115
Automatic light control .............116
High beam ............................... 116
High beam assist .....................117
Headlight flash ......................... 117
Headlight range adjustment ....118
Headlights when driving abroad .................................... 118
Daytime running lights .............119
Adaptive forward lighting .........119
Hazard warning flashers ..........121
Turn lights ................................ 122
Front fog lights ......................... 122
Rear fog light ........................... 122
Reversing lights .......................122
Misted light covers ...................123
Interior lighting ........................... 123
Instrument panel illumination control ..................................... 123
Interior lights ............................ 123
Reading lights .......................... 124
Glove box lighting ....................124
Sunvisor lights ......................... 124Lighting features ........................124
Entry lighting ............................ 124
Exit lighting .............................. 125
Battery discharge protection ....125Exterior lighting
Light switch
Turn light switch:
m:lights off8:sidelights9:low beam
Control indicator 8 3 95.
Page 125 of 253
Lighting123Misted light covers
The inside of the light housing may
mist up briefly in poor, wet and cold
weather conditions, in heavy rain or after washing. The mist disappears
quickly by itself. To help, switch on the headlights.Interior lighting
Instrument panel illumination control
Brightness of the following lights can
be adjusted when the exterior lights
are on:
● instrument panel illumination
● steering wheel controls
Turn thumb wheel A and hold until
the desired brightness is obtained.
Interior lights
Courtesy lightFrontpress v:offw:automatic switching on
and offpress u:on
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124LightingRear⃒:onw:automatic switching on and off§:offReading lights
The front reading lights are located inthe overhead console.
Press s and t to turn each light on
or off.
Glove box lighting Illuminates when the glovebox is
opened.
Sunvisor lights Illuminates when the cover is opened.
Lighting features
Entry lighting
Welcome lighting Following lights are switched on for a
short time by unlocking the vehicle
with the radio remote control:
● low beam
● sidelights
● tail lights
● number plate lights
● instrument panel light
● interior lights
This function works only in the dark
and facilitates locating the vehicle.
Activation or deactivation of this
function can be changed in the
vehicle settings.
Vehicle personalisation 3 105.
The following lights will additionally
switch on when driver's door is
opened:
● illumination of some switches
● some interior lights
Page 155 of 253

Driving and operating1539Warning
Do not let this special safety
feature tempt you into taking risks
when driving.
Adapt speed to the road
conditions.
Control indicator b 3 93.
Deactivation
ESC can be deactivated: press and
hold t for approx. 5 s.
Control indicators k and n illuminate.
ESC is reactivated by pressing t
again. If the TC system was
previously disabled, both TC and
ESC are reactivated.
ESC is also reactivated the next time
the ignition is switched on.
Fault
If there is a fault in the system the
control indicator b illuminates
continuously and a message appears
in the Driver Information Centre. The
system is not operational.
Have the cause of the fault remedied
by a workshop.
Descent control system The Descent control system (DCS)
allows the vehicle to travel at a low
speed without depressing the brake
pedal. The vehicle will automatically
decelerate to a low speed and remain
at that speed when the system is
activated. Some noise or vibration
from the brake system may be
apparent when the system is active.Caution
Use only when descending steep
grades while driving off-road. Do
not use when driving on normal
road surfaces. Unnecessary
usage of the DCS function, such
as while driving on normal roads,
may damage the brake system
and the ESC function.
Activation
At speeds below approx. 25 mph,
press u. The green control indicator
u flashes in the instrument cluster, to
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Driving and operating155Press m: control indicator m in
instrument cluster illuminates white.
Activation of the functionality
Accelerate to the desired speed and
turn thumb wheel to SET/-: the
current speed is stored and
maintained. Control indicator m in
instrument cluster illuminates green.
On Uplevel display m illuminates
green and set speed is indicated.
Accelerator pedal can be released.
Vehicle speed can be increased by depressing the accelerator pedal.
When the accelerator pedal is
released, the previously stored speed
is resumed.
Cruise control remains activated
while gearshifting.
Increase speed
With cruise control active, hold thumb
wheel turned to RES/+ or briefly turn
to RES/+ repeatedly: speed
increases continuously or in small
increments.
Alternatively accelerate to the desired speed and store by turning to SET/-.
Reduce speed
With cruise control active, hold thumb
wheel turned to SET/- or briefly turn to
SET/- repeatedly: speed decreases
continuously or in small increments.
Deactivation of the functionality
Press y: control indicator m in
instrument cluster illuminates white.
On Uplevel display m changes to
white.
Cruise control is deactivated, but not
switched off. Last stored speed
remains in memory for later speed
resume.
Automatic deactivation: ● Vehicle speed is below approx. 20 mph.
● Vehicle speed drops more than 15 mph below the set speed.
● The brake pedal is depressed.
● The clutch pedal is depressed for
a few seconds.
● Selector lever is in N.
● Engine speed is in a very low range.
● The Traction Control system (TC)
or Electronic Stability Control
(ESC) is operating.
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156Driving and 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 20 mph. The stored
speed will be resumed.
Switching off the system
Press m: control indicator m in
instrument cluster extinguishes. The
stored speed is deleted.
Pressing L for activating 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 a
speed above 15 mph.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.
Switching on the system
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.
On Uplevel display L changes to
green.
Change speed limit With speed limiter active, turn thumb
wheel to RES/+ to increase or SET/-
to decrease the desired maximum
speed.
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158Driving and operatingAdditionally the driver gets notified by
a flashing red LED stripe which is
projected on the windscreen in the
driver's field of view.
A precondition is that forward collision
alert is not deactivated by pressing
V on the steering wheel.
Activation
Forward collision alert uses the front
camera system in the windscreen to
detect a vehicle directly ahead, in your path, within a distance of approx.
60 m.
Forward collision alert operates
automatically above 25 mph, if it is not deactivated by pressing V, see
below.
Alerting the driver
The vehicle ahead control indicator
A illuminates green in the instrument
cluster when the system has detected
a vehicle in the driving path.The control indicator A changes to
yellow when the distance to a
preceding moving vehicle gets too
small or when approaching another
vehicle too rapidly.Caution
The colour lighting of this control
indicator does not correspond to
local traffic laws on following
distance. The driver bears full
responsibility for maintaining safe
following distance according to
applicable traffic rules, weather
and road conditions etc. at all
times.
When the time to a potential collision
with a vehicle in front gets too small
and a collision is imminent, the driver
gets notified by a flashing red LED
stripe which is projected on the
windscreen in the driver's field of
view.
Simultaneously a warning chime
sounds. Depress the brake pedal and
steer the vehicle, if it is required by the
situation.
Selecting the alert sensitivity The alert sensitivity can be set to
near, medium or far.