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28Keys, doors and windows
Open the sliding side door halfway
and move the relevant handle to the
first notch position; the warning light
illuminates in the instrument panel.
Then press the button (1) on the relevant handle.
Move the handle back and forth to
ensure the door actuator motor
operates, then press and hold the
switch on the instrument panel to fully
close the door; the warning light
extinguishes when the system is
reset correctly.
Maintenance
It is the owner's responsibility to have
the drive belt replaced after every
25,000 cycles, and for this purpose a
counter is incorporated in the lower B- pillar. The counter is incremented at
each opening and closing, it is not
possible to reset the counter. Seek
the assistance of a workshop.
If the drive belt should fail, the door
may still be opened and closed
manually.
Fault
If a system fault is detected when
unlocking the doors, an audible
warning will sound and the LED in the
switch illuminates. Check position of
exterior handle. Reset handle if in the
open position and use key to operate door locks.
Seek the assistance of a workshop if
the fault remains.
Power side step9 Warning
Take care when using the power
side step, particularly in wet and
cold weather conditions.
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Keys, doors and windows29The power side step operates
automatically when the sliding door is
opened or closed.9 Warning
Ensure there is adequate
clearance to allow the power side
step to fully extend and retract
without obstruction.
The indicator illuminates during
operation of the power side step. If it
remains illuminated with the door
closed, the step has not retracted.
In the event of a failure, manually
retract the power side step by
unscrewing the orange handwheel
located at the rear of the step,
ensuring that there are no obstacles
preventing closure. When the step is
retracted, screw in the orange
handwheel. Seek the assistance of a
workshop.
Rear doors Lock and unlock the rear doors with
the remote control or key (if
equipped).
To open the right-hand rear door, pull
the exterior handle.
The right-hand door can also be
opened from inside the vehicle by
pulling the interior handle.
The left-hand rear door is then
released using the lever.
9 Warning
The rear lights may be obscured if
the rear doors are open and the
vehicle is parked on the roadside.
Make other road users aware of the vehicle, by using a warning
triangle or other equipment
specified in the road traffic
regulations.
The doors are retained in the 90º
position by locking stays.
Page 33 of 239

Keys, doors and windows31Vehicle 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 the doors. All
doors must be closed or the system
cannot be activated.
Notice
The anti-theft locking system cannot be activated when the hazard
warning lights or sidelights are
switched on.
Activation and deactivation are not
possible with the central locking
switch.
Activation
Press e twice within 3 seconds.
Hazard warning lights flash
five times as confirmation.
Deactivation Unlock the doors by pressing c on the
remote control.
Anti-theft alarm system The anti-theft alarm system is
operated in conjunction with the
central locking system.
It monitors:
● doors, tailgate, bonnet
● passenger compartment
● load compartment
● ignition
● interruption of alarm siren power supply
Activation
All doors and the bonnet must be
closed.
Press e to activate anti-theft alarm
system. Hazard warning lights flash
twice to confirm activation.
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32Keys, doors and windowsIf the hazard warning lights do not
flash upon activation, a door or the
bonnet is not fully closed.
Notice
Changes to the vehicle interior, e.g.
the use of seat covers, and open
windows, could impair the function
of passenger compartment
monitoring.
Deactivation
Unlocking the vehicle or switching on
the ignition deactivates the anti-theft
alarm system. Hazard warning lights
flash once to confirm deactivation.
Notice
If the alarm has been triggered,
unlocking the vehicle with the key
will not stop the alarm siren. To stop the siren, switch on the ignition. The
hazard warning lights will not flash
upon deactivation if the alarm has
been triggered.
Activation without monitoring of
passenger compartment
Switch off monitoring of the
passenger compartment when
people or animals are being left in thevehicle, or if the auxiliary heater
3 111 is set for a timed or remote
controlled start.
Depending on vehicle configuration:
● press and hold e, or
● switch ignition on and off twice quickly, then close doors and
activate the anti-theft alarm
system
An audible signal will sound as
confirmation.
The status will remain until the doors
are unlocked.
Alarm
When triggered, the alarm sounds via a separate battery-backed power
sounder, and the hazard warning
lights flash simultaneously. The
number and duration of alarm signals
are stipulated by legislation.
If the vehicle battery is disconnected
or its power supply is interrupted, the
alarm siren will be triggered. First
deactivate the anti-theft alarm system if the vehicle battery must be
disconnected.
To silence the alarm siren (if
triggered) and therefore deactivate
the anti-theft alarm system, reconnect vehicle battery and unlock vehicle
with remote control button c (or
switch on the ignition).
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 36 of 239
34Keys, doors and windowsFolding mirrors
For pedestrian safety, the exterior
mirrors will swing out of their normal
mounting position if they are struck
with sufficient force. Reposition the mirror by applying slight pressure tothe mirror housing.
Parking position
The exterior mirrors can be folded in
by pressing gently on the outer edge
of the housing, e.g. when in a
confined parking situation.
Heated mirrors
Operated by pressing Ü on either
system. LED illuminates in button
during operation.
Heating works with the engine
running and is switched off
automatically after a short time.
Climate control system 3 105.
Electronic climate control system 3 107.
Page 42 of 239

40Seats, restraintsDepending on version, head
restraints can also be tilted forwards
or backwards. Push or pull the lower
part of the head restraint to adjust.
Notice
Approved accessories may only be
attached to the front passenger seat head restraint if the seat is not in use.
Removal
Press both catches, pull the head
restraint upwards and remove.
Stow head restraints securely in load
compartment. Do not drive with head
restraints removed if the seat is
occupied.
Front 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 loose objects
under the seats.
Underseat storage, storage box 3 68.
● 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 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 allsides and of all display
instruments. There should be at
least one hand of clearance
between head and the roof
frame. Thighs should rest lightly on the seat without pressing into
it.
Page 43 of 239
Seats, restraints41● Sit with shoulders as far backagainst the backrest as possible.
Set the backrest rake so that it is possible to 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 the steering wheel 3 75.
● Adjust the head restraint 3 39.
● Adjust the height of the seat belt 3 49.
● Adjust the lumbar support so that
it supports the natural shape of the spine 3 41.
Seat adjustment Drive only with engaged seats and
backrests.Longitudinal adjustment
Pull handle, slide seat, release
handle.
Try to move the seat back and forth to ensure that the seat is locked in place.
Suspension seat longitudinal
adjustment
Pull handle, slide seat, release
handle.
Try to move the seat back and forth to ensure that the seat is locked in place.
Page 51 of 239
Seats, restraints49Three-point seat beltFasten
Withdraw the belt from the retractor,
guide it untwisted across the body
and insert the latch plate into the
buckle. Tighten the lap belt regularly
whilst driving by pulling the shoulder
belt.
Loose or bulky clothing prevents the
belt from fitting snugly. Do not place
objects such as handbags or mobile
phones between the belt and your body.
9 Warning
The belt must not rest against hard
or fragile objects in the pockets of
your clothing.
Seat belt reminder X 3 86.
Height adjustment
1. Pull belt out slightly.
2. Shift the height adjustment upwards or press button to
disengage and push the height
adjustment downwards.