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128Instruments and controlsNotice
Establishing an emergency call may
not be possible in areas without
sufficient network availability or due
to hardware damage during an
accident.
Automatic crash notification
In case of an accident with airbag
deployment, an automatic
emergency call is established and an automatic crash notification will be
transmitted to the next public safety
answering point.
Emergency assistance
In case of an emergency you can also
manually place an emergency call by pressing the red SOS button for more
than two seconds. The LED flashes to confirm that a connection to the
nearest PSAP is being established.
The LED illumates steadily as long as the call is active.
Pressing the SOS button immediately
a second time will terminate the call.
The LED switches off.Status LED
Illuminates green for three seconds
when the ignition is switched on: the
system works properly.
Illuminates red: fault in the system.
Contact a workshop.
Flashes red: backup battery needs
replacement.
Breakdown call function Pressing . for more than two
seconds connects you to a roadside
assistance service provider.
For information about coverage and
scope of services of the roadside
assistance, please refer to the
Service and warranty booklet.
Page 131 of 289

Lighting129LightingExterior lighting.......................... 129
Light switch .............................. 129
Automatic light control .............130
High beam ............................... 130
High beam assist .....................130
Headlight flash ......................... 131
Headlight range adjustment ....131
Headlights when driving abroad .................................... 132
Daytime running lights .............132
Cornering lights .......................132
Hazard warning flashers ..........132
Turn lights ................................ 133
Front fog lights ......................... 133
Rear fog light ........................... 133
Reversing lights .......................134
Misted light covers ...................134
Interior lighting ........................... 134
Instrument panel illumination control ..................................... 134
Interior lights ............................ 134
Reading lights .......................... 135
Sunvisor lights ......................... 136
Lighting features ........................136
Centre console lighting ............136Entry lighting ............................ 136
Exit lighting .............................. 136
Vehicle locator lighting ............137
Peripheral lighting ....................137
Battery discharge protection ....137Exterior lighting
Light switch
Turn light switch:
AUTO:automatic light control
switches automatically
between daytime running
light and headlightF:sidelightsD:headlight
When switching on the ignition,
automatic light control is active.
Control indicator F 3 114.
Page 136 of 289

134LightingTurn the control wheel twice to
activate or deactivate the rear fog
light.
Light switch in position AUTO:
switching on rear fog light will switch
headlights on automatically.
Reversing lights
The reversing light comes on when
the ignition is on and reverse gear is
selected.
Misted 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 can be adjusted when the exterior lights are on.
Depending on version the brightness
can be set by pressing and holding
0 or ß until the desired
brightness is obtained or in the
vehicle personalisation 3 123.
Interior lights
During entry and exit of the vehicle,
the front and rear courtesy lights
automatically switch on and then off
after a delay.
Front and rear courtesy light
Operate rocker switch:
;:automatic switching on
and offpress §:onpress 2:off
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136LightingIllustration shows rear courtesy lights.
Sunvisor lights Illuminates when the cover is opened.Lighting features
Centre console lighting A spotlight integrated in the overheadconsole illuminates the centre
console when headlights are
switched off.
The brightness can be adjusted in the vehicle personalisation 3 123.
Entry lighting
Welcome lighting
Some or all of the following lights are
switched on for a short time by
unlocking the vehicle with the radio
remote control:
● headlights
● tail lights
● interior lights
The number of activated lights
depends on the surrounding light
conditions.
The lighting switches off immediately
when the ignition is switched on.
Starting off 3 18.This function can be activated or
deactivated in the vehicle
personalisation 3 123.
The following lights will additionally
switch on when the driver's door is
opened:
● illumination of some switches
● Driver Information Centre
Exit lighting
The following lights are switched on if
the key is removed from the ignition
switch:
● interior lights
● instrument panel light
They will switch off automatically after
a delay. This function works only in
the dark.
Path lighting Headlights, tail lights and number
plate lights illuminate the surrounding
area for an adjustable time after
leaving the vehicle.
Page 156 of 289

154Driving and operating9Warning
If the vehicle battery is discharged,
the vehicle must not be towed,
tow-started or jump-started as the
steering wheel lock cannot be
disengaged.
Operation on vehicles with
electronic key system in case of
failure
If either the electronic key fails or the
battery of the electronic key is weak,
a message may be displayed in the
Driver Information Centre.
Hold the electronic key with buttons
outside at the marking on the steering column cover as shown in the
illustration.
Operate the clutch pedal (manual
transmission), the brake pedal and
press Start/Stop .
This option is intended for
emergencies only. Replace the
electronic key battery as soon as
possible 3 23.
For unlocking or locking the doors,
see fault in radio remote control unit
or electronic key system 3 24.Starting the engine
Vehicles with ignition switch
Turn key to position 1 to release the
steering wheel lock.
Manual transmission: operate clutch
and brake pedal.
Automatic transmission: operate
brake pedal and move selector lever
to P or N.
Do not operate accelerator pedal.
Diesel engines: wait until control
indicator z extinguishes.
Page 196 of 289

194Driving and operatingSystem limitations
In the event of a fault or if the system does not work temporarily, e.g.
because of high external noise level
or other interference factors, H
illuminates in the instrument cluster.
A message is displayed in the Driver
Information Centre.9 Warning
Under certain circumstances,
various reflective surfaces on
objects or clothing as well as
external noise sources may cause the system to fail to detect
obstacles.
Special attention must be paid to
low obstacles which can damage
the lower part of the bumper.
Caution
Performance of the system can be reduced when sensors are
covered, e.g. by ice or snow.
Performance of the parking assist
system can be reduced due to
heavy loading.
Special conditions apply if there
are taller vehicles in the vicinity
(e.g. off-road vehicles, mini vans,
vans). Object identification and correct distance indication in the
upper part of these vehicles
cannot be guaranteed.
Objects with a very small reflection
cross-section, e.g. objects of
narrow size or soft materials, may
not be detected by the system.
Parking assist systems do not
detect objects outside the
detection range.
Side blind spot alert
The side blind spot alert system
detects and reports objects on either
side of the vehicle, within a specified
blind spot zone. The system displays
a visual alert in each exterior mirror,
when detecting objects that may not
be visible in the interior and exterior
mirrors.
Side blind spot alert uses some of the
parking assist sensors which are
located in the front and rear bumper
on both sides of the vehicle.9 Warning
Side blind spot alert does not
replace driver vision.
The system does not detect:
● vehicles outside the side blind zones which may be rapidly
approaching
● pedestrians, cyclists or animals
Before changing a lane, always
check all mirrors, look over the
shoulder and use the turn signal.
Page 197 of 289

Driving and operating195ActivationInfo Display without touchscreen
Press T.
Info Display with touchscreen
Activate the function in the vehicle
personalisation.
Vehicle personalisation 3 123.
T illuminates green in the instrument
cluster to confirm the function.
Functionality
When the system detects a vehicle in the side blind zone while driving
forwards, an LED will illuminate in the
relevant exterior mirror.
The LED comes on immediately when being passed.
The LED comes on after a delay when
passing another vehicle slowly.
Operation conditions
The following conditions must be
fulfilled for proper operation:
● all vehicles are moving in the same direction and in adjacent
lanes
● the speed of your vehicle is between 7 and 87 mph
● passing a vehicle with a speed difference of less than 6 mph
● another vehicle is passing with a speed difference of less than
15 mph
● the traffic flow is normal
● driving on a straight or slightly curved road
● the vehicle is not pulling a trailer
● the sensors are not covered by mud, ice or snow
● the warning zones in the exterior mirrors or the detection zones on
front and rear bumper ar not
covered
Page 204 of 289

202Driving and operatingThe counting of driving time alert is
reset if one of the following conditions is met:
● The vehicle has been stationary for more than 15 minutes with the
engine running.
● The ignition has been switched off for a few minutes.
● The driver's seat belt has been unfastened and the driver's door
is open.
Notice
If the vehicle speed drops below
40 mph, the system is paused. The
driving time is counted again once
the speed is above 40 mph.
Driver drowsiness detection
The system monitors the driver's level
of vigilance. A camera at the top of the
windscreen detects variations in
trajectory compared to the lane
markings. This system is particularly suited to fast roads (speed higher
than 40 mph).
If the trajectory of the vehicle
suggests a certain level of
drowsiness or inattention by thedriver, the system triggers the first
level of alert. The driver is notified by
a message and an audible signal is
given.
After three first level alerts, the
system triggers a new alert with a
message, accompanied by a more
pronounced audible signal.
In certain driving conditions (poor
road surface or strong winds), the
system may give alerts independent of the driver's level of vigilance.
The driver drowsiness detection is reinitialised when the ignition has
been switched off for a few minutes or the speed remains below 40 mph for
a few minutes.
System limitations
In the following situations, the system may not operate properly or even not
operate at all:
● poor visibility caused by inadequate lighting of the
roadway, falling snow, heavy
rain, dense fog etc.● dazzle caused by headlamps of oncoming vehicles, low sun,
reflections on damp roads,
leaving a tunnel, alternating
shade and light etc.
● windscreen area in front of the camera covered by dirt, snow,
stickers etc.
● no lane markings detected or multiple lane markings due to
roadworks
● close vehicles ahead
● winding roads or narrow roads