Page 40 of 315

38Keys, doors and windowsIf the vehicle's battery is to be
disconnected (e.g. for maintenance
work), the alarm siren must be
deactivated as follows: switch the
ignition on then off, then disconnect
the vehicle's battery within
15 seconds.
Immobiliser
The immobiliser is activated
automatically.
If the control indicator d flashes when
the ignition is on, there is a fault in the
system; the engine cannot be started. Switch off the ignition and repeat the
start attempt. Retry with the key in the transmitter pocket. Operation on
vehicles with electronic key system in case of failure 3 153.
If the control indicator d continues
flashing, attempt to start the engine using the spare key.
Seek the assistance of a workshop.Note
Radio Frequency Identification
(RFID) tags may cause interference with the key. Do not have it placed
near the key when starting the
vehicle.
Note
The immobiliser does not lock the
doors. You should always lock the
vehicle after leaving it and switch on
the anti-theft alarm system 3 26,
3 35.
Control indicator d 3 110.Exterior mirrors
Convex shape The shape of the mirror makes
objects appear smaller, which will
affect the ability to estimate
distances.
Side blind spot alert 3 206.
Electric adjustment
Select the relevant exterior mirror by
pushing í for left mirror or ì for right
mirror. LED in button indicates the
selection.
Page 42 of 315
40Keys, doors and windowsHeated mirrors
Heating of rear window and exterior
mirrors is operated by pressing b.
LED in button illuminates.
Heating works with the engine
running and is switched off
automatically after a short time.
Automatic dimming Dazzling by following vehicles in the
dark is automatically reduced by
dimming the exterior mirror on the
driver's side.
Parking assist
For mirrors with position memory, the exterior mirrors are automatically
aimed at the rear tyres as a parking
aid when reverse gear is selected, except during trailer operation.
Position memory 3 51.
Activation or deactivation of this
function can be changed in vehicle personalisation.
Vehicle personalisation 3 123.Interior mirrors
Manual anti-dazzle
To reduce dazzle, adjust the lever on the underside of the mirror housing.
Page 45 of 315

Keys, doors and windows43
Press and hold c for more than
2 seconds to open windows.
Press and hold e for more than
2 seconds to close windows.
Release button to stop window
movement.
If the windows are fully opened or
closed, the hazard warning lights will
flash twice.
Overload
If the windows are repeatedly
operated within short intervals, the window operation is disabled for
some time.
Initialising the power windows
If the windows cannot be closed
automatically (e.g. after
disconnecting the vehicle battery), a
warning message is displayed in the
Driver Information Centre.
Vehicle messages 3 122.
Activate the window electronics as
follows:
1. Close doors.
2. Switch on ignition.
3. Pull the switch until the window is closed and keep pulling for
additional 2 seconds.
4. Push the switch until the window is completely open and keep
pushing for additional 2 seconds.
5. Repeat for each window.Heated rear window
Heating of rear window and exterior
mirrors is operated by pressing b.
LED in button illuminates.
Heating works with the engine
running and is switched off
automatically after a short time.
Page 46 of 315
44Keys, doors and windowsHeated windscreen
Operated by pressing ,. LED in
button illuminates.
Heating works with the engine
running and is switched off
automatically after a short time.
Pressing , once more during the
same ignition cycle allows the heating to operate for another three minutes.
Sun visors The sun visors can be folded down or
swivelled to the side to prevent
dazzling.
The covers of the mirrors should be
closed when driving.
A ticket holder is located on the
backside of the sun visor.Roof
Sunroof9 Warning
Take care when operating the
sunroof. Risk of injury, particularly to children.
Keep a close watch on the
movable parts when operating
them. Ensure that nothing
becomes trapped in them as they
move.
Switch on ignition to operate the sunroof.
Page 57 of 315

Seats, restraints55Heating
Adjust heating to the desired setting
by pressing ß for the respective seat
one or more times. The control
indicator in the button indicates the
setting.
Prolonged use of the highest setting
for people with sensitive skin is not
recommended.
The seat heating will be reduced
automatically from highest level to
medium level after 30 minutes.
Seat heating is operational when
engine is running and during an
Autostop.
Stop-start system 3 157.
Automatic seat heating Depending on the equipment, the
automatic seat heating can be
enabled in the vehicle personalisation
menu in the Info Display.
Vehicle personalisation 3 123.
When enabled, the heating of the
seats will be activated automatically
at vehicle start. The activation is
based on several parameters such as vehicle interior temperature, intensity
and direction of the sun and
temperature setting of the electronic
climate control system for the driver
and passenger side.
As the vehicle’s interior warms up, the seat heating level will be reduced
automatically until it finally goes off. The seat heating level being provided
during the automatic operation is
shown by heated seat indicator lights.
If the passenger seat is unoccupied,
the automatic seat heating feature will not activate the seat heating for that
seat.The seat heating buttons can be
pressed at any time to exit the
automatic seat heating for the
respective seat and control the seat
heating manually instead.
Ventilating
Adjust ventilation to the desired
setting by pressing A for the
respective seat one or more times.
The control indicator in the button
indicates the setting.
Ventilated seats are operational when
engine is running and during an
Autostop.
Stop-start system 3 157.
Page 58 of 315
56Seats, restraintsMassage
Press c to switch on the back
massage function.
To switch off, press c again. The
current massage procedure will be
ended, this may take a few seconds.
After ten minutes the massage
function is switched off automatically.
Rear seats
Armrest
Fold armrest down. The armrest
contains cupholders.
Heating
Activate seat heating by pressing ß
for the respective rear outer seat.
Activation is indicated by the LED in
the button.
Press ß once more to deactivate seat
heating.
Prolonged use for people with
sensitive skin is not recommended.
Seat heating is operational when engine is running and during an
Autostop.
Stop-start system 3 157.
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88Instruments and controlsInstruments and
controlsControls ....................................... 89
Steering wheel adjustment ........89
Steering wheel controls .............89
Heated steering wheel ...............89
Horn ........................................... 90
Windscreen wiper and washer ..90
Rear window wiper and washer ...................................... 92
Outside temperature ..................93
Clock ......................................... 93
Power outlets ............................. 94
Inductive charging .....................95
Ashtrays .................................... 96
Warning lights, gauges and indi‐
cators ........................................... 97
Instrument cluster ......................97
Speedometer ........................... 101
Odometer ................................ 102
Trip odometer .......................... 102
Tachometer ............................. 103
Fuel gauge .............................. 103
Engine coolant temperature gauge ..................................... 103
Service display ........................ 104Control indicators ....................105
Turn lights ................................ 105
Seat belt reminder ...................105
Airbag and belt tensioners .......106
Airbag deactivation ..................106
Charging system .....................106
Malfunction indicator light ........106
Brake and clutch system .........107
Electric parking brake ..............107
Electric parking brake fault ......107
Antilock brake system (ABS) ...107
Gear shifting ............................ 108
Following distance ...................108
Lane keep assist .....................108
Electronic Stability Control off . 108
Electronic Stability Control and Traction Control system .........108
Traction Control system off .....108
Engine coolant temperature ....108
Preheating ............................... 109
AdBlue ..................................... 109
Tyre pressure monitoring system .................................... 109
Engine oil pressure ..................109
Low fuel ................................... 109
Immobiliser .............................. 110
Exterior light ............................ 110
High beam ............................... 110
High beam assist .....................110
LED headlights ........................ 110Front fog lights......................... 110
Rear fog light ........................... 110
Cruise control .......................... 110
Adaptive cruise control ............110
Vehicle detected ahead ...........111
Pedestrian detection ................111
Speed limiter ........................... 111
Traffic sign assistant ................111
Door open ................................ 111
Displays ..................................... 111
Driver Information Centre ........111
Info Display .............................. 117
Head-up display ......................118
Vehicle messages ......................122
Warning chimes .......................122
Vehicle personalisation ..............123
Telematics service .....................127
Emergency call ........................127
Page 91 of 315
Instruments and controls89Controls
Steering wheel adjustment
Unlock lever, adjust steering wheel,
then engage lever and ensure it is
fully locked.
Do not adjust steering wheel unless
vehicle is stationary and steering
wheel lock has been released.
Steering wheel controls
Cruise control and speed limiter are
operated via the controls on the left
side of the steering wheel.
Additionally, forward collision alert
can be set by using the controls on the
left side of the steering wheel.
Infotainment system can be operated
via the controls on the right side of the
steering wheel.
Driver assistance systems 3 178.
Further information is available in the
Infotainment manual.
Driver Information Centre 3 111.
Heated steering wheel
Activate heating by pressing *.
Activation is indicated by the LED in
the button.
Heating is operational when the
engine is running and during an
Autostop.
Stop-start system 3 157.