36Keys, doors and windowsThe system is not deactivated when
unlocking the driver's door with the
key or with the central locking button
in the passenger compartment.
AlarmWhen triggered, the alarm hornsounds 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 only by pressing c or by
pressing the switch on the door
handle (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 when the vehicle is unlocked
next time with the radio remote
control. Additionally, a warning
message is displayed in the Driver
Information Centre after switching on
the ignition.
Vehicle messages 3 119.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 is removed
from the ignition switch.
If 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 start
attempt.
If control indicator d continues
flashing, attempt to start the engine
using the spare key and seek the
assistance of a workshop.Notice
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 24,
3 34.
Control indicator d 3 109.
38Keys, doors and windowsFolding mirrors with remote
control
This function is only available if thevehicle is equipped with electrical
seat memory.
Press e again after locking for
one second to fold in mirrors.
Press c again after unlocking for
one second to fold out mirrors.
Pressing for three seconds activates
window operation. Power windows
3 40. Sunroof 3 43.
If the mirrors were folded in using the
control in the driver's door, they are
not folded out by pressing c.
This function can be activated or
deactivated in the Vehicle
personalisation.
Select the relevant setting in Settings,
I Vehicle in the Colour-Info-Display.
Colour-Info-Display 3 117.
Vehicle personalisation 3 121.
The settings are automatically stored
for the key being used 3 23.
Heated mirrors
Operated by pressing Ü.
The LED in the button indicates
activation.
Heating works with the engine
running and is switched off
automatically after a short time.
Automatic dimming Dazzling by following vehicles at night
is automatically reduced by dimming
the exterior mirror on the driver's side.
Parking assist For mirrors with position memory, theexterior mirror on the passenger side
is automatically aimed at the rear
tyres as a parking aid when reverse
gear is selected, except during trailer
operation.
Position memory 3 50.
Activation or deactivation of this
function can be changed in the menu Settings in the Info-Display. Vehicle
personalisation 3 121.
42Keys, doors and windowsOverload
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 3 119.
Activate the window electronics for
each window as following:
1. Close doors.
2. Switch on ignition.
3. Pull switch to the second detent until the window starts to close
and hold pulled for additional
4 seconds.
4. Push switch to the second detent until the window starts to open
automatically.
5. Repeat for each window.Heated rear window
Operated by pressing Ü.
The LED in the button indicates
activation.
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.
If the sun visors have integral mirrors, the mirror covers should be closed
when driving.
Roller blinds
To reduce sunlight at the rear seats, pull the blind upwards using the grip
and engage it at the top of the door
frame.
Seats, restraints47Front seats
Seat position9 Warning
Only drive with the seat correctly
adjusted.
9 Danger
Do not sit nearer than 25 cm from
the steering wheel, to permit safe
airbag deployment.
9 Warning
Never adjust seats while driving as
they could move uncontrollably.
9 Warning
Never store any objects under the
seats.
● Sit with buttocks as far back against the backrest as possible.
Adjust the distance between the
seat and the pedals so that legs
are slightly angled when fully
pressing the pedals. Slide the
front passenger seat as far back
as possible.
● Set seat height high enough to have a clear field of vision on all
sides and of all display
instruments. There should be at
least one hand of clearance
between head and the roof
frame. Your thighs should rest
lightly on the seat without
pressing into it.
● Sit with shoulders as far back against the backrest as possible.
Set the backrest rake so that it is possible to easily reach the
steering wheel with arms slightly
bent. Maintain contact between
shoulders and the backrest when turning the steering wheel. Do
not angle the backrest too far
back. We recommend a
maximum rake of approx. 25°.
● Adjust seat and steering wheel in
a way that the wrist rests on top
of the steering wheel while the
arm is fully extended and
shoulders on the backrest.
● Adjust the steering wheel 3 85.
● Adjust the head restraint 3 45.
● Adjust the height of the seat belt 3 55.
● Adjust the thigh support so that there is a space approx. two
fingers wide between the edge of the seat and the hollow of the
knee.
● Adjust the lumbar support so that
it supports the natural shape ofthe spine.
52Seats, restraintsStoring positions by remote control
Actual driver's seat and exterior
mirror positions are automatically
stored by the radio remote control key each time the ignition is switched off.
These stored positions are
independent of the memory positions
stored by the buttons 1 or 2.
The stored positions are
automatically recalled by unlocking
and opening the driver's door with the
memorised radio remote control key.
If the door is already open, press c on
remote control to activate the recall.
To stop recall movement, press one
of the memory-, power mirror- or
power seat controls.
This function can be activated or
deactivated in the vehicle
personalisation.
Select the relevant setting in Settings,
I Vehicle in the Colour-Info-Display.
Colour-Info-Display 3 117.
Vehicle personalisation 3 121.Easy exit function
For a convenient exit out of the
vehicle, the power driver seat moves
rearwards when vehicle is stationary.
To activate, switch off ignition,
remove key from the ignition switch
and open the driver's door. If the door
is already open, switch off ignition to
activate the recall.
To stop recall movement, press one
of the memory- or power seat
controls.
This function can be activated or
deactivated in the vehicle
personalisation.
Select the relevant setting in Settings,
I Vehicle in the Colour-Info-Display.
Colour-Info-Display 3 117.
Vehicle personalisation 3 121.
Safety function
If the driver's seat encounters
resistance during movement, the
recall may stop. After removing the
obstruction, press and hold the
appropriate power seat position
button for the memory item for
two seconds. Try recalling thememory position again. If the recall
does not operate, consult a
workshop.
Overload
If the seat setting is electrically
overloaded, the power supply is
automatically cut-off for a short time.
Notice
After an accident in which airbags have been deployed, the memorised
settings for each position button will
be deactivated.
Armrest
84Instruments and controlsInstruments and
controlsControls ....................................... 85
Steering wheel adjustment ........85
Steering wheel controls .............85
Heated steering wheel ...............85
Horn ........................................... 86
Windscreen wiper/washer .........86
Rear window wiper/washer .......88
Outside temperature ..................89
Clock ......................................... 89
Power outlets ............................. 91
Ashtrays .................................... 92
Warning lights, gauges and indi‐ cators ........................................... 93
Instrument cluster ......................93
Speedometer ............................. 99
Odometer .................................. 99
Trip odometer ............................ 99
Tachometer ............................. 100
Fuel gauge .............................. 100
Fuel selector ............................ 101
Engine coolant temperature gauge ..................................... 101
Service display ........................ 101
Control indicators ....................103Turn signal............................... 103
Seat belt reminder ...................103
Airbag and belt tensioners .......104
Airbag deactivation ..................104
Charging system .....................104
Malfunction indicator light ........105
Brake and clutch system .........105
Operate pedal .......................... 105
Electric parking brake ..............105
Electric parking brake fault ......105
Antilock brake system (ABS) ...106
Upshift ..................................... 106
Gear shifting ............................ 106
Variable effort steering ............106
Following distance ...................106
Lane departure warning ..........106
Ultrasonic parking assist .........106
Electronic Stability Control off . 107
Electronic Stability Control and Traction Control system .........107
Traction Control system off .....107
Engine coolant temperature ....107
Preheating ............................... 107
Diesel particle filter ..................107
AdBlue ..................................... 108
Tyre pressure monitoring system .................................... 108
Engine oil pressure ..................108
Low fuel ................................... 108
Immobiliser .............................. 109Autostop.................................. 109
Exterior light ............................ 109
High beam ............................... 109
High beam assist .....................109
Adaptive forward lighting .........109
Fog light ................................... 109
Rear fog light ........................... 109
Cruise control .......................... 109
Adaptive cruise control ............109
Vehicle detected ahead ...........110
Speed limiter ........................... 110
Traffic sign assistant ................110
Door open ................................ 110
Information displays ...................110
Driver Information Centre ........110
Colour-Info-Display ..................117
Smartphone controller .............118
Vehicle messages ......................119
Warning chimes .......................120
Battery voltage ........................ 120
Vehicle personalisation ..............121
OnStar® system ........................124
Instruments and controls87Automatic wiping with rain sensorINT:automatic wiping with rain
sensor
The rain sensor detects the amount of water on the windscreen and
automatically regulates the frequency
of the windscreen wiper.
Adjustable sensitivity of the rain
sensor
Turn the adjuster wheel to adjust the
sensitivity:
low sensitivity:turn adjuster
wheel downwardshigh sensitivity:turn adjuster
wheel upwards
Keep the sensor free from dust, dirt
and ice.
Rain sensor function can be activated or deactivated in the Vehicle
personalisation.
Select the relevant setting in Settings,
I Vehicle in the Colour-Info-Display.
Colour-Info-Display 3 117.
Vehicle personalisation 3 121.
88Instruments and controlsWindscreen and headlight
washer
Pull lever. Washer fluid is sprayed
onto the windscreen and the wiper
wipes a few times.
If the headlights are on, washer fluid is also sprayed onto the headlights,
provided that the lever is pulled
sufficiently long. Afterwards the
headlight washer system is
inoperable for 5 wash cycles or until
engine or headlights have been
switched off and on again.
Washer fluid 3 230
Rear window wiper/washer
Push the rocker switch to activate the
rear window wiper:
upper position:continuous
operationlower position:intermittent
operationmiddle position:off
Push lever. Washer fluid is sprayed
onto the rear window and the wiper
wipes a few times.
Do not use if the rear window is
frozen.
Switch off in car washes.
The rear window wiper comes on
automatically when the windscreen
wiper is switched on and reverse gear
is engaged.
Activation or deactivation of this
function can be changed in the menu Settings in the Info-Display.
Vehicle personalisation 3 121.