Page 26 of 273
24Keys, doors and windows
To remove the cap, press button at
the back and extract the key blade
from the housing. Insert the key into
the recess at the bottom of the cap
and swivel the key upward.
Electronic key system 3 19.
Manual unlocking
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 twice or by pressing ( in the driver's door panel.
The load compartment will possibly
not be unlocked.
By switching on the vehicle, the anti-
theft locking system is deactivated.
Manual locking
Push inside locking knob of all doors
except driver's door or press ) in the
driver's door panel. Then close the
driver's door and lock it from the
outside by turning the key in the lock
cylinder. The load compartment is
possibly not locked.
Page 28 of 273

26Keys, doors and windowsPassive door lockThis feature locks the vehicle
automatically after several seconds if
an electronic key has been
recognised previously inside the
vehicle, all doors have then been
closed and the electronic key does
not remain within the vehicle.
If the electronic key remains in the
vehicle or the vehicle is not off,
passive door lock will not be
permitted.
If there have been two or more
electronic keys in the vehicle and the
vehicle was on once, the feature locks the vehicle if just one electronic key is
taken out of the vehicle.
To prevent locking of the vehicle e.g.
when passengers remain in the
vehicle, the system must be disabled.
To disable the system, press the
central locking button for a few
seconds while one door is open. The
function remains disabled until the
central locking button is pressed or
the vehicle is switched on.Activation or deactivation of passive
locking can be set in the menu
Settings I Vehicle settings I Remote
lock / unlock / start in the Info Display.
Info Display 3 85.
Vehicle personalisation 3 91.
The setting can be saved for the electronic key being used 3 20.
Child locks9 Warning
Use the child locks whenever
children are occupying the rear
seats.
Move the pin in the rear door to the front position. The door cannot be
opened from the inside.
To deactivate, move the pin to the
rear position.
Smartphone remote
function
This feature allows a smartphone to
be connected to the vehicle and
remote vehicle functions to be
requested. Features vary depending
on availability.
Features include: ● Remote commands: Use to lock /
unlock the vehicle, remote start
for the cabin climate, or sound or cancel the horn and flash the
lights.
Page 32 of 273

30Keys, doors and windowsActivationAll doors must be closed and the
electronic key of the electronic key
system 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 ) once.
● Electronic key system: self- activated 30 seconds after
locking the vehicle by pressing the button on any exterior door
handle.● Radio remote control or electronic key: directly by
pressing ) twice within
5 seconds.
● Electronic key system with passive locking enabled: briefly
activated after passive locking
occurs.
● Central locking button: with a door open, press ).
Deactivation Radio remote control: Unlocking the
vehicle by pressing ( 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. 1 m 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 (, by
pressing the button on the door
handle or switching on the vehicle.
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
Page 37 of 273
Keys, doors and windows35Child safety system for rear
windows
To deactivate rear door power
windows, press V. The LED
illuminates.
To activate, press V again.
Overload
If the windows are repeatedly
operated within short intervals, the
window operation is disabled for
some time.
Initialising the power windows
If the driver's window cannot be
closed automatically (e.g. after
disconnecting the vehicle battery), a
warning message is displayed in the
Driver Information Centre.
Vehicle messages 3 89.
Activate the window electronics as
follows:
1. Close doors.
2. Switch on the vehicle.
3. Push switch until the window is completely open and keep
pushing for additional 2 seconds.
4. Pull switch until the window is closed and keep pulling for
additional 2 seconds.
5. Repeat for each window.Heated rear window
Operated by pressing Ü.
The LED in the button indicates
activation.
Heating works after the vehicle has
been started and is switched off
automatically after a short time.
Page 43 of 273

Seats, restraints41Heating
Adjust heating to the desired setting
by touching 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.
Auto heated seats
When the vehicle is on, this feature
will automatically activate seat
heating at the level required by the
vehicle's interior temperature.
The indicators next to the seat
heating symbol on the touch screen
indicate the heat setting.
Use the touch screen button to turn
auto heated seats off.
The auto heated seat feature can be programmed to always be enabled
when the vehicle is on.
Vehicle personalisation 3 91.
Deactivation To deactivate auto heated seat, touchß AUTO on the touch screen.
Remote start heated seats When it is cold outside, the heatedseats can be turned on automaticallyduring a remote vehicle start.
The heated seats will be cancelled
when POWER m is pressed. If the
vehicle has auto heated seats, the
seat heating level will automatically
change to the level required by the
vehicle's interior temperature when
the vehicle is turned on.
The temperature performance of an
unoccupied seat may be reduced.The heated seats will not switch on
during a remote start unless the
heated seat feature is enabled in
vehicle personalisation 3 91.
Page 44 of 273
42Seats, restraintsRear seats
Armrest
Fold armrest down. The armrest
contains cupholders.
Heating
Activate seat heating by pressing ß
in the door panel 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.
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.
Page 47 of 273

Seats, restraints45Airbag system
The airbag system consists of a
number of individual systems
depending on the scope of
equipment.
When triggered, the airbags inflate
within milliseconds. They also deflate
so quickly that it is often unnoticeable during the collision. When triggered
the high voltage system of the vehicle
is also deactivated.9 Warning
The airbag system deploys in an
explosive manner, repairs must be performed by skilled personnel
only.
9 Warning
Adding accessories that change
the vehicle's frame, bumper
system, height, front end or side
sheet metal, may keep the airbag
system from working properly. The operation of the airbag system can
also be affected by changing any
parts of the front seats, seat belts, airbag sensing and diagnostic
module, steering wheel,
instrument panel, inner door seals including the speakers, any of the
airbag modules, ceiling or pillar
trim, front sensors, side impact
sensors or airbag wiring.
Note
The airbag sensing and diagnostic module is located in the centre
console area. Do not put any
magnetic objects in this area.
Do not affix any objects onto the
airbag covers and do not cover them with other materials. Have damagedcovers replaced by a workshop.
Each airbag is triggered only once.
Have deployed airbags replaced by
a workshop. Furthermore, it may be
necessary to have the steering
wheel, the instrument panel, parts of
the panelling, the door seals,
handles and the seats replaced.
Do not make any modifications to
the airbag system as this will
invalidate the vehicle operating
permit.
Control indicator v for airbag systems
3 78.
Child restraint systems on front
passenger seat with airbag
systems
Warning according to ECE R94.02:
EN: NEVER use a rearward-facing
child restraint on a seat protected by
an ACTIVE AIRBAG in front of it;
DEATH or SERIOUS INJURY to the
CHILD can occur.
Page 51 of 273

Seats, restraints49
The inflated airbags cushion the
impact, thereby reducing the risk of
injury to the upper body and pelvis in
the event of a side-on collision
considerably.
9 Warning
Keep the area in which the airbag
inflates clear of obstructions.
Note
Only use protective seat covers that
have been approved for the vehicle.Be careful not to cover the airbags.
Curtain airbag system
The curtain airbag system consists of an airbag in the roof frame on each
side. This can be identified by the
word AIRBAG on the roof pillars.
The curtain airbag system is triggered
in the event of a side-on impact of a
certain severity. The vehicle must be
switched on.
The inflated airbags cushion the
impact, thereby reducing the risk of
injury to the head in the event of a
side-on impact considerably.
9 Warning
Keep the area in which the airbag
inflates clear of obstructions.
The hooks on the handles in the
roof frame are only suitable for
hanging up light articles of
clothing, without coat hangers. Do not keep any items in these
clothes.
Airbag deactivation
The front passenger airbag system must be deactivated for child restraint
system on the passenger seat
according to the instructions in the
table 3 53. The side airbag and
curtain airbag systems, the belt
pretensioners and all driver airbag
systems will remain active.