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28Keys, doors and windowsOperation with the key in case of
a central locking system fault
In case of a fault, e.g. vehicle battery
or remote control / electronic key
battery is discharged, the driver's
door can be locked or unlocked with
the mechanical key.
Manual unlocking
Electronic key: press and hold the
latch to extract the integral key.
Manually unlock the driver's door by
inserting and turning the key in the
lock cylinder.
The other doors can be opened by
pulling the interior handle. The load
compartment and fuel filler flap will
possibly not be unlocked.
By switching on the ignition, the anti- theft locking system is deactivated.
Manual locking
Manually lock the driver's door by
inserting and turning the key in the lock cylinder.
To lock the other doors, remove the
black cover by using a key.
Insert key carefully and move to the
inner side of the door without turning
the key.
Remove key and attach black cover.
The fuel filler flap and tailgate are
possibly not locked.
Automatic locking Automatic locking after driving off This system allows automatic lockingof the doors and tailgate as soon as
the speed of the vehicle exceeds a
certain speed.
Page 31 of 273

Keys, doors and windows29If one of the doors or the tailgate is
open, the automatic central locking
does not take place. This is signalled
by the sound of the locks rebounding,
accompanied by illumination of h in
the instrument cluster, an audible signal and the display of an alert
message.
This function can be activated or
deactivated at any time. With the
ignition on, press Q until an audible
signal starts and a corresponding message is displayed.
The state of the system stays in
memory when switching off the
ignition.
Automatic relock after unlocking
This feature automatically locks all
doors, load compartment and fuel
filler flap a short time after unlocking
with the remote control or electronic
key, provided no door has been
opened.
Child locks9 Warning
Use the child locks whenever
children are occupying the rear
seats.
Mechanical child locks
Turn the red child lock in the rear door to the horizontal position by using a
key. The door cannot be opened from
the inside.
To deactivate, turn the child lock to
the vertical position.
Page 37 of 273

Keys, doors and windows35Vehicle 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.
Unlocking the vehicle disables the
mechanical anti-theft locking system.
This is not possible with the central
locking button.
Activating
Press N on the radio remote control
twice within five seconds.
Anti-theft alarm system The anti-theft alarm system is
combined with the anti-theft locking
system.
It monitors: ● doors, tailgate, bonnet
● passenger compartment including adjoining load
compartment
● vehicle inclination, e.g. if it is raised
● ignition
Activation
All doors must be closed and the electronic key must not remain in the
vehicle. Otherwise the system cannot be activated.
● Radio remote control: self- activated 30 seconds after
locking the vehicle by pressing e
once.
● Electronic key system: self- activated 30 seconds after
locking the vehicle by pressing with a finger or thumb on one of
the front door handles at the
markings.
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36Keys, doors and windows
● Radio remote control orelectronic key: directly by
pressing e twice within
five seconds.
● Electronic key system with passive locking enabled: briefly
activated after passive locking
occurs.
Note
Changes to the vehicle interior such
as the use of seat covers and open windows, could impair the function
of passenger compartment
monitoring.
Activation without monitoring of
passenger compartment and
vehicle inclination
Switch off the monitoring of
passenger compartment and vehicle
inclination when animals are being
left in the vehicle, because of high
volume ultrasonic signals or
movements triggering the alarm. Also switch off when the vehicle is on a
ferry or train.
1. Close tailgate, bonnet, windows.
2. Press o. LED in the button o
illuminates for a maximum of
ten minutes.
3. Close doors.
4. Activate the anti-theft alarm system.
Status message is displayed in the
Driver Information Centre.
Indication
LED in the central locking button
flashes if the anti-theft alarm system
is activated.
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.
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Keys, doors and windows37
Electronic key system: Unlocking the
vehicle by pressing on one of the front
door handles at the markings
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 on one of the front door
handles at the markings 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 3 105.
If the vehicle's battery is to be
disconnected (e.g. for maintenance
work), the alarm siren must bedeactivated as follows: switch the
ignition on then off, then disconnect
the vehicle's battery within 15 s.
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.
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. Always lock the vehicle after
leaving it 3 24 and switch on the anti-
theft alarm system 3 35.
Page 109 of 273

Instruments and controls107Rear wiper in reverse gear:
Activation / deactivation.
● Vehicle
Unlocking boot only : Activation /
deactivation.
Plip action : Driver / all doors.
● Driving assistance
Fatigue Detection system :
Activation / deactivation.
Speed recommendation :
Activation / deactivation.
7" Colour Info Display
Unit settings
Select Units.
Change units for Consumption and
Distance and Temperature .
Language settings
Select Language .
Change language by touching the
respective entry.
Vehicle settings
Select Vehicle .
In the corresponding submenus the
following settings can be changed:
● Collision / Detection Systems
Side Blind Spot Alert : Activates
or deactivates side blind spot
alert.
Drowsy Driver Alert : Activates or
deactivates the driver
drowsiness system.
Speed Limit Information :
Activates or deactivates the
speed limit information by traffic sign recognition.
Rear View Camera Guidelines :
Activates or deactivates the rear
view camera guidelines on the
Info Display.Forward Collision Alert :
Activates or deactivates the
forward collision alert auto brake, adjusts the sensitivity of the
forward collision alert.
● Comfort and Convenience
Auto Wipe in Reverse Gear :
Activates or deactivates
automatic switching on of the
rear window wiper when reverse gear is engaged.
● Lighting
Ambient Lighting : Activates or
deactivates the ambient lighting
and adjusts its brightness.
Welcome Lighting : Activates or
deactivates and changes the
duration of welcome lighting.
Exit Lighting : Activates or
deactivates and changes the duration of exit lighting.
● Remote Lock, Unlock, Start
Remote Door Unlock : Changes
the configuration to unlock the
driver's door only or all doors
when pressing O on the remote
control.
Page 110 of 273

108Instruments and controlsUnlock boot only: Activates or
deactivates unlocking the tailgate
only when pressing T on the
remote control.
8" Colour Info Display
Press SET to open settings menu.
Use touch buttons to operate the
display.
Unit settings
Select System settings .
Change units for Consumption and
Distance and Temperature .
Confirm with G.
Language settings
Select Languages .
Change language by touching the
respective entry.
Confirm with G.
Vehicle settings
Press Í.
Select Vehicle settings .
In the corresponding submenus the
following settings can be changed:
● Vehicle access
Door unlock: Driver only :
Changes the configuration to unlock the driver's door only or all
doors when pressing O on the
remote control.
Door unlock: Boot only : Activates
or deactivates unlocking the
tailgate only when pressing T
on the remote control.
Motorised tailgate / door :
Activates or deactivates the
opening or closing of the power
tailgate.
Hands-free tailgate access :
Activates or deactivates the
function.
● Safety
Recommended speed display :
Activates or deactivates the
speed limit information by traffic
sign recognition.
Active safety brake : Activates or
deactivates active emergency
braking and the forward collision
alert, the alert sensitivity can be
selected.
Mirror adaptation in reverse :
Adjusts the exterior mirrors if
reverse gear is engaged to
facilitate sidewalks visibility.
Page 112 of 273

110Instruments and controlsDepending 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 and
lights, control of central locking
system
● Stolen vehicle assistance
● Vehicle diagnostics
Note
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.OnStar buttons
Privacy button
Press and hold j until a message is
heard to activate or deactivate the
transmission of the vehicle location.
Press j to answer a call or to end a
call to an advisor.
Press j to access the Wi-Fi settings.
Service button
Press Z to establish a connection to
an advisor.
SOS button
Press [ to establish a priority
emergency connection to a specially
trained emergency advisor.
Status LED
Green: The system is ready with
activated transmission of the vehicle
location.
Green flashing: The system is on a
call.
Red: A problem arose.
Off: The system is ready with
deactivated transmission of the
vehicle location or the system is in
standby mode.
Red / green flashing for a short period of time: The transmission of the
vehicle location has been
deactivated.
OnStar services
General services
If you need any information e.g.
opening hours, points of interest and
destinations or if you need any
support e.g. in the case of a vehicle