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Keys, doors and windows25gases, which cannot be seen or
smelled, could enter the vehicle.
This can cause unconsciousness
and even death.Caution
Before opening the tailgate, check overhead obstructions, e.g. a
garage door, to avoid damage to
the tailgate. Always check the
moving area above and behind the
tailgate.
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 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.
Activating
Press e on the radio remote control
twice within 5 seconds.
Anti-theft alarm system
The anti-theft alarm system is
combined with the central locking
system.
It monitors: ● doors, tailgate, bonnet
● ignition
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26Keys, doors and windowsActivation● Self-activated 30 seconds after locking the vehicle by pressing e
once.
● Directly by pressing e twice
within 5 seconds.
Status LED
Status LED is integrated in the sensor
on top of the instrument panel.
Status during the first 30 seconds of
anti-theft alarm system activation:LED illuminates:test, arming delayLED flashes
quickly:doors, tailgate or
bonnet not
completely closed,
or system fault
Status after system is armed:
LED flashes
slowly:system is armed
Seek the assistance of a workshop in the event of faults.
Deactivation Unlocking the vehicle by pressing c
deactivates anti-theft alarm system.
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 alarm can be silenced by
pressing any button on the radio
remote control or by switching on the
ignition.
The anti-theft alarm system can only
be deactivated by pressing c on the
radio remote control or by 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
with the radio remote control.
Vehicle messages 3 87.
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.
Page 93 of 229

Instruments and controls91
Select Settings and then Vehicle
settings .
Vehicle settings
● Climate and air quality
Auto fan speed : Modifies the
level of the cabin airflow of the
climate control in automatic
mode.
Auto rear demist : Activates
automatically the heated rear
window.
● Comfort settings
Chime volume : Changes the
volume of warning chimes.
Personalization by driver :
Activates or deactivates the
personalisation function.
Rear auto wipe in reverse :
Activates or deactivates
automatic switching on of the
rear window wiper when reverse gear is engaged.
● Park assist / Collision detection
Park assist : Activates or
deactivates the parking assist.
● Exterior ambient lighting
Exterior lighting by unlocking :
Activates or deactivates the entry
lighting.
Duration upon exit of vehicle :
Activates or deactivates and
changes the duration of exit
lighting.● Power door locks
Auto door lock : Activates or
deactivates the automatic door
locking function after switching on ignition.
Stop door lock if door open :
Activates or deactivates the door locking function while a door isopen.
Delayed door lock : Activates or
deactivates the delayed door
locking function. This menu
option is displayed with Stop door
lock if door open deactivated.
Central locking system 3 21.
● Remote locking, unlocking,
starting
Remote unlock feedback :
Activates or deactivates the
hazard warning flasher feedback
whilst unlocking.
Passive door unlock : Changes
the configuration to unlock only
the driver's door or the whole
vehicle whilst unlocking.
Auto relock doors : Activates or
deactivates the automatic relock
Page 95 of 229

Instruments and controls93the automatic relock function
after unlocking without opening
the vehicle.
Rear camera ● Rear View Camera Guidelines :
Activates or deactivates the rear
view camera guidelines on the
Info Display.
● Rear Park Assist Symbols :
Activates or deactivates the
warning symbols on the Info
Display.Telematics service
OnStar
OnStar is a personal connectivity and service assistant with integrated
Wi-Fi hotspot. The OnStar service is available 24 hours a day, seven days
a week.
Notice
OnStar is not available for all
markets. For further information,
contact your workshop.
Notice
In order to be available and
operational, OnStar needs a valid
OnStar subscription, functioning
vehicle electrics, mobile service and
GPS satellite link.
To activate the OnStar services and
set up an account, press Z and speak
with an advisor.Depending on the equipment of the
vehicle, the following services are
available:
● Emergency services and support
in the case of a vehicle
breakdown
● Wi-Fi hotspot
● Smartphone application
● Remote control, e.g. location of the vehicle, activation of horn andlights, control of central locking
system
● Stolen vehicle assistance
● Vehicle diagnostics
● Destination download
Notice
The OnStar module of the vehicle is
deactivated after ten days without an
ignition cycle. Functions requiring a
data connection will be available
again after switching on the ignition.
Page 224 of 229

222IndexAAccessories and vehicle modifications .......................... 154
Adjustable air vents ...................115
Airbag and belt tensioners ...........76
Airbag deactivation ................45, 77
Airbag label................................... 40 Airbag system .............................. 40
Air conditioning regular operation ................................ 116
Air conditioning system .............. 109
Air intake .................................... 116
Air vents...................................... 115
Antilock brake system ................ 129
Antilock brake system (ABS) .......78
Anti-theft alarm system ................25
Anti-theft locking system .............. 25
Appearance care ........................196
Ashtrays ....................................... 68
Automatic anti-dazzle ..................28
Automatic light control .................99
Automatic locking ........................23
Automatic transmission .............125
Autostop ............................... 80, 120
B Battery discharge protection ......106
Battery voltage ............................. 90
Belts.............................................. 37
Bonnet ....................................... 156Brake and clutch fluid.................201
Brake and clutch system .............77
Brake assist ............................... 130
Brake fluid .................................. 160
Brakes ............................... 129, 160
Breakdown.................................. 194
Bulb replacement ....................... 162
C Capacities .................................. 210
Catalytic converter .....................124
Central locking system ................21
Centre high-mounted brake light 169
Changing tyre and wheel size ...183
Charging system .......................... 77
Child locks ................................... 23
Child restraint installation locations ................................... 50
Child restraints.............................. 46
Child restraint systems ................46
Cigarette lighter ........................... 68
City mode ................................... 132
Climate control ............................. 15
Climate control systems .............108
Clock ............................................ 66
Code ............................................. 87
Control indicators.......................... 73
Control of the vehicle .................117
Controls ........................................ 62
Convex shape .............................. 27