Page 22 of 351

20Keys, doors and windowsLock 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.
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
Used to operate:
● central locking system
● anti-theft locking system
● anti-theft alarm system
Depending on model, the vehicle may use a 2-button or 3-button remote
control.
The remote control has a range of
approx. 5 m. It can be affected by
external influences. The hazard
warning flashers confirm operation.
Handle with care, protect it from
moisture and high temperatures and
avoid unnecessary operation.
Fault
If the central locking system cannot
be operated with the remote control,
it may be due to the following:
● The range is exceeded.
● The battery voltage is too low.
● Frequent, repeated operation of the remote control while not in
range, which will require
reprogramming by a workshop.
● 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.
Unlocking 3 23.
Remote control battery
replacement
Replace the battery as soon as the
range reduces.
Page 23 of 351
Keys, doors and windows21
Batteries do not belong in household
waste. They must be disposed of at
an appropriate recycling collection
point.
Remove screw and open battery
compartment by inserting a coin into
the slot and twisting.
Replace the battery (battery type
CR2016), paying attention to the
installation position.
Reattach both halves of cover
ensuring it engages correctly.
Replace screw and tighten.
Electronic key system
Enables a hands-free operation of the central locking system 3 23.
The electronic key simply needs to be on the driver's person.
Notice
Always take the electronic key with
you when exiting the vehicle.
For hands-free operation, the
electronic key must be outside the
vehicle, within a range of approx.
1 m of the front doors or load
compartment.
Hands-free operation is automatically
disabled when the central locking
switch e 3 23 is pressed. To re-
enable hands-free operation, restart
the engine.
Page 24 of 351

22Keys, doors and windowsElectronic key battery
replacement
Replace the battery as soon as the
system no longer operates properly
or the range is reduced.
Batteries do not belong in household
waste. They must be disposed of at
an appropriate recycling collection
point.
Open battery compartment by
inserting a coin into the slot and
twisting.
Replace the battery (battery type CR2016), paying attention to the
installation position.
Notice
Do not touch the electronic circuit in
the cover when replacing the
battery.
Reattach both halves of cover
ensuring it engages correctly.
Fault
If the central locking system cannot
be operated or the engine cannot be started, the cause may be one of the
following:
● fault in electronic key
● electronic key out of reception range
● battery voltage 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
Door locks
Anti-theft security lock
To prevent the front doors from being opened from the outside, open the
door and engage the anti-theft
security lock.
Page 32 of 351

30Keys, doors and windowsbe seen or smelled, could enter
the vehicle. This can cause
unconsciousness and even death.
Central locking system 3 23.
Power sliding door
Opening
With vehicle at a standstill and the
parking brake applied, press switch
on instrument panel to open the
power sliding door automatically. The
LED in the switch flashes during
operation.
The engine is restarted automatically
when operating the power sliding
door switch during an Autostop.
Stop-start system 3 227.
Notice
If the parking brake is not applied
when the switch is pressed, a
warning chime will sound and the
power sliding door will not open.
To stop movement at any time, press the switch again. Press once more to
continue power sliding door
movement.
Notice
If the power sliding door is locked
from the inside with the child lock
active, a warning chime will sound. Unlock the door manually from the
inside.
Closing
Press switch again; the LED flashes and a chime sounds during operation.
In the event of opening or closing
difficulties, e.g. due to frost, press and hold the switch to increase power to
the sliding door.9 Warning
Take care when operating the
power sliding door. Risk of injury,
particularly to children.
Take particular care when the
vehicle is parked on a slope: open
or close the door fully until it
latches into its locking position.
Keep a close watch on the moving door when operating. Ensure that
nothing becomes trapped during
operation and no-one is standing
within the moving area.
Notice
Do not operate power sliding door too often without engine running asthis will discharge the vehicle
battery.
Page 39 of 351

Keys, doors and windows37Depending 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, reconnectvehicle 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.
The immobiliser is activated
automatically after the key has been
removed from the ignition switch and
also if the key is left in the ignition
switch when the engine is turned off.
If the engine cannot be started, switch off the ignition and remove key, wait
approx. 2 seconds and then repeat
the start attempt. If start attempt is
unsuccessful, attempt to start the
engine using the spare key and seek
the assistance of a workshop.
Notice
Radio Frequency Identification
(RFID) tags may cause interference
with the key. Do not have it placed near the key when starting the
vehicle.Notice
The immobiliser does not lock the doors. Always lock the vehicle after
leaving it 3 23 and switch on the anti-
theft alarm system 3 35.
Page 90 of 351

88Instruments and controls
Depending on vehicle, an additional
outlet may be located in the rear of the
vehicle.
Connecting electrical accessories
while the engine is off will discharge
the vehicle battery. Do not exceed the
maximum power consumption of
120 W.
9 Danger
To avoid the risk of fire, if multiple
power outlets are used
simultaneously, the total power
consumption of connected
accessories must not exceed
180 W.
With ignition off the power outlet may
be deactivated.
Additionally, the power outlet may be
deactivated in case of low battery
voltage.
Electrical accessories that are
connected must comply with the
electromagnetic compatibility
requirements laid down in
DIN VDE 40 839.Caution
Do not connect any current- delivering accessories, e.g.
electrical charging devices or
batteries.
Do not damage the outlets by
using unsuitable plugs.
USB socket
In the Infotainment unit or on the
instrument panel there is a USB
socket M for the connection of external
audio sources and for charging
devices.
Page 100 of 351

98Instruments and controls9Danger
Risk of fatal injury for a child using
a child restraint system together
with activated front passenger
airbag.
Risk of fatal injury for an adult
person with deactivated front
passenger airbag.
Airbag system 3 58.
Belt tensioners 3 54.
Airbag deactivation 3 62.
Charging system p illuminates red.
Illuminates when the ignition is
switched on and extinguishes shortly after the engine starts.
Illuminates when the engine is
running
Stop, switch off engine. Vehicle
battery is not charging. Engine
cooling may be interrupted. The
brake servo unit may cease to be
effective. Seek the assistance of a
workshop.
Malfunction indicator light
Z illuminates or flashes yellow.
Illuminates briefly when the ignition is
switched on.
Illuminates when the engine is
running
Fault in the emission control system. The permitted emission limits may be exceeded. Seek the assistance of a
workshop immediately.
If Z illuminates in combination with
A , stop vehicle and switch off engine
as soon as possible.9 Warning
Have the cause of the fault
remedied immediately by a
workshop.
Flashes when the engine is
running
Fault that could lead to catalytic
converter damage. Ease up on the
accelerator until the flashing stops.
Seek the immediate assistance of a
workshop.
Service vehicle soon
j illuminates yellow.
Illuminates briefly when the ignition is
switched on.
The vehicle needs a service.
May illuminate in combination with
another control indicator or a
message in the Driver Information
Centre 3 104.
Illuminates if cleaning of the diesel particle filter is required and
automatic cleaning does not occur
3 232.
Page 110 of 351
108Instruments and controlsDigital speedDigital display of the instantaneous
speed.
Settings Press and hold one of the buttons on
end of wiper lever for approx.
5 seconds to select the display
language.
AdBlue range The AdBlue range is calculated from
the current contents of the AdBlue
tank and the average AdBlue
consumption 3 233.
Interruption of power supply
If the power supply has been
interrupted or if the vehicle battery
voltage has dropped too low, the
values stored in the trip computer will be lost.Tachograph
The tachograph is operated as
described in the operating
instructions supplied. Observe
regulations regarding use.