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38Keys, doors and windowsStatus after system is armed:LED flashes
slowly:system is armed
Seek the assistance of a workshop in the event of faults.
Deactivation Radio remote control: Unlocking the
vehicle by pressing c deactivates the
anti-theft alarm system.
Electronic key system: Unlocking the
vehicle by pressing the button on any
exterior door handle deactivates the
anti-theft alarm system.
The electronic key must be outside
the vehicle, within a range of approx. one metre of the relevant door side.
The system is not deactivated by
unlocking the driver's door with the
key or with the central locking button
in the passenger compartment.
Alarm When triggered, the alarm horn
sounds and the hazard warning lights flash simultaneously. The number
and duration of alarm signals are
stipulated by legislation.
The anti-theft alarm system can be
deactivated by pressing c, by
pressing the switch on the door
handle with electronic key system or
switching on the ignition.
A triggered alarm, which has not been
interrupted by the driver, will be
indicated by the hazard warning
lights. They will flash quickly three
times the next time the vehicle is
unlocked with the radio remote
control. Additionally a warning
message is displayed in the Driver
Information Centre after switching on
the ignition.Vehicle messages 3 123.
If 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 system is part of the ignition
switch and checks whether the
vehicle is allowed to be started with the key being used.
The immobiliser is activated
automatically after the key has been
removed from the ignition switch.
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.
If the control indicator d continues
flashing, attempt to start the engine
using the spare key and seek the
assistance of a workshop.
Page 42 of 311
40Keys, doors and windowsElectric folding
Switch control to o, then push the
control c down. Both exterior mirrors
will fold.
Push the control down again - both
exterior mirrors return to their original position.
If an electrically folded mirror is
manually extended, pressing down
the control will only electrically extend
the other mirror.
Heated mirrors
Operated by pressing Ü.
Heating works with the engine
running and is switched off
automatically after a short time.
Interior mirrors
Manual anti-dazzle
To reduce dazzle, adjust the lever on the underside of the mirror housing.
Page 45 of 311

Keys, doors and windows43
Press and hold c to open windows.
Press and hold e 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 3 123.
Activate the window electronics as
follows:
1. Close doors.
2. Switch on ignition.
3. Pull switch until the window is closed and keep pulling for
additional two seconds.
4. Push switch until the window is completely open and keep
pushing for additional
two seconds.
5. Repeat for each window.Heated rear window
Operated by pressing Ü.
Heating works with the engine
running and is switched off
automatically after a short time.
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.
Page 56 of 311

54Seats, restraintsThe armrest can be slid forwards by
10 cm. Under the armrest there is a
storage compartment.
Armrest storage 3 72.
Heating
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 3 163.
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 3 125.
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
Page 57 of 311
Seats, restraints55Adjust ventilating 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 3 163.
Massage
Press c to switch on the back
massage function.
To switch off, press c again.
After ten minutes the massage
function is switched off automatically.Rear seats
Armrest
Fold armrest down.
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56Seats, restraintsHeating
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 3 163.
Seat belts
The seat belts are locked during
heavy acceleration or deceleration of
the vehicle, holding the occupants in
the seat position. Thereby the risk of
injury is considerably reduced.
9 Warning
Fasten seat belt before each trip.
In the event of an accident, people
not wearing seat belts endanger their fellow occupants and
themselves.
Seat belts are designed to be used by only one person at a time. Child
restraint system 3 64.
Periodically check all parts of the belt
system for damage, soiling and
proper functionality.
Have damaged components replaced by a workshop. After an accident,
have the belts and triggered belt
pretensioners replaced by a
workshop.
Note
Make sure that the belts are not
damaged by shoes or sharp-edged objects or trapped. Prevent dirt from getting into the belt retractors.
Seat belt reminder
Each seat is equipped with a seat belt reminder, indicated for front seats by
control indicators X and k, or for rear
seats by the symbol X in the Driver
Information Centre 3 109.
Belt force limiters
Stress on the body is reduced by the
gradual release of the belt during a
collision.
Page 92 of 311

90Instruments and controlsInstruments and
controlsControls ....................................... 91
Steering wheel adjustment ........91
Steering wheel controls .............91
Heated steering wheel ...............92
Horn ........................................... 92
Windscreen wiper/washer .........92
Rear window wiper/washer .......94
Outside temperature ..................95
Clock ......................................... 95
Power outlets ............................. 97
Power connector .......................98
Ashtrays .................................... 99
Warning lights, gauges and indi‐ cators ......................................... 101
Instrument cluster ....................101
Speedometer ........................... 104
Odometer ................................ 105
Trip odometer .......................... 105
Tachometer ............................. 106
Fuel gauge .............................. 106
Fuel selector ............................ 106
Engine coolant temperature gauge ..................................... 107
Service display ........................ 108Control indicators ....................109
Turn signal ............................... 109
Seat belt reminder ...................109
Airbag and belt tensioners .......110
Airbag deactivation ..................110
Charging system .....................111
Malfunction indicator light ........111
Brake and clutch system .........111
Electric parking brake ..............111
Electric parking brake fault ......111
Antilock brake system (ABS) ...112
Gear shifting ............................ 112
Following distance ...................112
Lane keep assist .....................112
Electronic Stability Control off . 112
Electronic Stability Control and Traction Control system .........112
Traction Control system off .....113
Preheating ............................... 113
Tyre pressure monitoring system .................................... 113
Engine oil pressure ..................113
Low fuel ................................... 113
Immobiliser .............................. 114
Exterior light ............................ 114
High beam ............................... 114
High beam assist .....................114
LED headlights ........................ 114
Fog light ................................... 114
Rear fog light ........................... 114Cruise control.......................... 114
Adaptive cruise control ............114
Vehicle detected ahead ...........115
Speed limiter ........................... 115
Traffic sign assistant ................115
Door open ................................ 115
Information displays ...................115
Driver Information Centre ........115
Info display .............................. 121
Vehicle messages ......................123
Warning chimes .......................124
Battery voltage ........................ 124
Vehicle personalisation ..............125
Telematics service .....................131
OnStar ..................................... 131
Page 94 of 311
92Instruments and controlsHeated steering wheel
Activate heating by pressing *.
Activation is indicated by the LED in
the button.
The recommended grip areas of the
steering wheel are heated quicker
and to a higher temperature than the
other areas.
Heating is operational when the
engine is running and during an
Autostop.
Stop-start system 3 163.
Horn
Press j.
Windscreen wiper/washer
Windscreen wiper with adjustable
wiper intervalHI:fastLO:slowINT:interval wipingOFF:off
For a single wipe when the
windscreen wiper is off, press the
lever downwards to position 1x.
Do not use if the windscreen is frozen.
Switch off in car washes.