Keys, doors and windows21Lock cylinders
Designed to free-wheel if they are forcefully rotated without the correct
key or if the correct key is not fully
inserted. To reset, turn cylinder with
the correct key until its slot is vertical, remove key and then re-insert it. If the
cylinder still free-wheels, turn the key through 180° and repeat operation.
Key with foldaway key section
Press button to extend. To fold the
key, first press the button.
Car Pass
The Car Pass contains security
related vehicle data and should
therefore be kept in a safe place.
When the vehicle is taken to a
workshop, this vehicle data is needed
in order to perform certain operations.
Radio remote control
Enables operation of the following
functions via the use of the remote control buttons:
● central locking system 3 24
● anti-theft locking system 3 33
● anti-theft alarm system 3 34
● tailgate 3 29
● power windows 3 40
● sunroof 3 43
● mirror folding 3 37
The remote control has a range of
approx. 50 metres. It can be restricted
by external influences. The hazard
warning flashers confirm operation.
Handle with care, protect from
moisture and high temperatures and
avoid unnecessary operation.
Replacing battery in radio remote
control
Replace the battery as soon as the
range reduces.
Batteries do not belong in household
waste. They must be disposed of at
an appropriate recycling collection
point.
22Keys, doors and windows
Extend the key and open the unit.
Replace the battery (battery type CR 2032), paying attention to the
installation position. Close the unit
and synchronise.
Radio remote control
synchronisation
After replacing the battery, unlock the
door with the key in the driver's door
lock. The radio remote control will be
synchronised when you switch on the
ignition.
Fault
If the central locking system cannot
be operated with the radio remote
control, the cause may be one of the
following:
● Fault in radio remote control.
● The range is exceeded.
● The battery voltage is too low.
● Frequent, repeated operation of the radio remote control while notin range, which will require re-
synchronisation.
● Overload of the central locking system by operating at frequent
intervals, the power supply is
interrupted for a short time.
● Interference from higher-power radio waves from other sources.
Manual unlocking 3 24.Electronic key system
Enables a keyless operation of the
following functions:
● central locking system 3 24
● tailgate 3 29
● ignition switching on and starting the engine 3 158
The electronic key simply needs to be on the driver's person.
Additionally, the electronic key
includes the functionality of the radio
remote control 3 21.
Handle with care, protect from
moisture and high temperatures and
avoid unnecessary operation.
Keys, doors and windows23Notice
Do not put the electronic key in the
load compartment or in front of the
Info-Display.
Replacing battery in electronic
key
Replace the battery as soon as the
system no longer operates properly or the range is reduced. The need for battery replacement is indicated by a
message in the Driver Information
Centre 3 119.
Battery replacement, see 'Radio
remote control' 3 21.
Electronic key synchronisation
The electronic key synchronises itself automatically during every starting
procedure.Fault
If the central locking cannot be
operated or the engine cannot be
started, the cause may be one of the
following:
● Fault in electronic key.
● Electronic key is out of reception range.
● The battery voltage is too low.
● Overload of the central locking system by operating at frequent
intervals; the power supply is
interrupted for a short time.
● Interference from higher-power radio waves from other sources.
To rectify the cause of the fault,
change the position of the electronic
key.
Manual unlocking 3 24.
Memorised settings
Whenever the ignition is switched off, the following settings are
automatically memorised by the
remote control unit or the electronic
key:● automatic climate control
● lighting
● Infotainment system
● central locking system
● Sport mode settings
● comfort settings
The saved settings are automatically used the next time the ignition is
switched on with the memorised key
with remote control unit 3 155 or
electronic key 3 22.
A precondition is that Personalisation
by Driver is activated in the personal
settings of the Info-Display. This must
be set for each remote control unit or
electronic key which is used.
Also memorised are the adjustments
of the driver's seat and exterior
mirrors, independent of the memory
positions 3 50.
Power seat automatically moves into the saved position when unlocking
and opening the driver's door with the
memorised remote control or
electronic key and Auto Memory
Recall in the Info-Display is activated.
Vehicle personalisation 3 120.
Keys, doors and windows33smelled, could enter the vehicle.
This can cause unconsciousness and even death.Caution
Before opening the tailgate, check overhead obstructions, such as a
garage door, to avoid damage to
the tailgate. Always check the
moving area above and behind the
tailgate.
Notice
Power tailgate: If the lifters of the
open tailgate lose pressure, the
tailgate falls a bit and will then be
stopped by the system. Following
the tailgate will be power opened
and closed. During this the tail lights will flash and a chime will sound.
After closing, the tailgate may not be operated until it has been serviced
by a workshop.
Notice
The operation of the power tailgate
is disabled under low vehicle battery
conditions. In this case, the tailgate
may not even by manually operable.
Notice
With the power tailgate disabled and
all doors unlocked, the tailgate can
only be operated manually. In this
event, manually closing the tailgate
requires significantly greater force.
Notice
At low outside temperatures the
tailgate may not open fully by itself.
In this case lift the tailgate manually
to its normal end position.
Notice
The installation of certain heavy
accessories onto the tailgate may
affect its ability to remain open.Vehicle security
Anti-theft locking system9 Warning
Do not use the system if there are
people in the vehicle! The doorscannot be unlocked from the
inside.
The system deadlocks all the doors. All doors must be closed and the
electronic key must not remain in the
vehicle. Otherwise the system cannot
be activated.
If the ignition was on, the driver's door
must be opened and closed once so
that the vehicle can be secured.
Unlocking the vehicle disables the
mechanical anti-theft locking system.
This is not possible with the central
locking button in the passenger
compartment.
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 3 108.
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.
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
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 ..................................... 107
Tyre pressure monitoring system .................................... 108
Engine oil pressure ..................108
Low fuel ................................... 108
Immobiliser .............................. 108
Autostop .................................. 109Exterior 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 ...........109
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 .......................119
Battery voltage ........................ 120
Vehicle personalisation ..............120
Telematics service .....................124
OnStar ..................................... 124
Instruments and controls91Power outlets
A 12 Volt power outlet is behind the
storage cover below the climate
controls. Press cover to open.
More 12 Volt power outlets are
located in the front and rear centre
console.
Do not exceed the maximum power
consumption of 120 watts.
A 230 Volt power outlet is located in
the rear centre console. If ignition is
on and a device is plugged in, an LED
in the outlet illuminates green.
Do not exceed the maximum power
consumption of 150 watts.
9 Danger
Power outlet works under high
electrical voltage!
With ignition off the power outlets are
deactivated. Additionally the power
outlets are deactivated in the event of
low vehicle battery voltage.