Page 29 of 255
Keys, doors and windows27
Activation
With the ignition switched on, press
and hold the central locking switch e
for approx. five seconds. An audible
signal confirms activation.
LED in switch illuminates when the
vehicle is locked.
Deactivation
With the ignition switched on, press and hold e for approx. five seconds.
An audible signal confirms
deactivation.
Child locks9 Warning
Use the child locks whenever
children are occupying the rear
seats.
Press down the child lock, door
cannot be opened from the inside.
Raise to deactivate.
Doors
Sliding door
Unlock the sliding side door with the remote control or key (if equipped).
Open the door by pulling the handle
and sliding the door towards the rear.
Open and close the sliding side door
only when the vehicle is at a standstill with the parking brake applied (on
certain models, a warning chime will
sound when the sliding side door is
open and the parking brake is
released).
Page 33 of 255

Keys, doors and windows31
The indicator illuminates during
operation of the power side step. If it
remains illuminated with the door closed, the step has not retracted, or
the door has not fully latched into its
locking position.
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).
Central locking system 3 23, Manual
door locks 3 22.
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 35 of 255

Keys, doors and windows33Vehicle 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.
Note
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 three 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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34Keys, doors and windowsIf the hazard warning lights do not
flash upon activation, a door or the
bonnet is not fully closed.
Note
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.
Note
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
3 119 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 111 of 255

Lighting109Interior lighting
Interior lights
Courtesy lights illuminate when the vehicle is unlocked with the remote
control or the front doors are opened.
When the doors are closed, the
courtesy light extinguishes after a
delay or immediately after the ignition
is switched on.
Front courtesy light
With the switch in its central position,
the light functions as a courtesy light.Operated by pressing the switch c:
● on constantly
● on when the doors are unlocked and opened
● off constantly
Rear courtesy lights
Combi, Bus
Low level and overhead courtesy
lights are located in the rear
passenger compartment.
Operate rocker switch on the
instrument panel:
press OFF:offpress c:onReading lights l 3 110.
Load compartment lighting Load compartment lighting can be setto illuminate when the side and rear
doors are opened, or switched on
constantly.
With the switch in its central position,
the light functions as a courtesy light.
Operated by pressing the switch c:
● on constantly
● on when the doors are unlocked and opened
● off constantly
Page 122 of 255

120Climate controlControl unitsThe timer or remote control unit turns
the system on and off, and is used to
programme specific departure times.
Timer (Type A)1 X:switches the control unit
on/off and changes
displayed information2 q
back:selects functions in the
menu bar and adjusts
values3 menu
bar:displays the selectable
functions Y, x , P , Ö and
Y4 r next:selects functions in the
menu bar and adjusts
values5 OK:confirms selection
Remote control (Type A)
The control buttons operate
identically to the timer (Type A) unit
described previously.
To activate the remote control, press X and release it when the menu bar
appears in the display. The signal
indicator and SENd appear briefly in
the display, followed by the
temperature.
9 Warning
When refuelling, switch off the
remote control unit as well as the
heater!
To switch off, press and hold X to
prevent inadvertent operation.
The remote control has a maximum
range of 600 metres. The range may
be reduced due to environmental
conditions and as the battery
becomes weaker.
Remote control (Type A) fault
displays
cobA:poor signal –
adjust positionconP:no signal – move closerbALo:battery low –
change batteryErr:system error –
consult workshopAdd,
AddE:system in learning mode
Page 123 of 255

Climate control121Teach remote control (Type A)
If the vehicle battery is reconnected, the LED in the instrument panel
button illuminates and the system
configures the remote control menu
automatically. If the LED flashes,
press OK on remote control, select
Add or AddE and confirm.
Additional remote control units may
also be configured. Press the button
until LED flashes, switch on the
remote control, select Add and
confirm.
AddE teaches the current remote
control unit exclusively and blocks all
previously configured units. Add
teaches up to four remote control
units, but only one unit can operate the system at any one time.Remote control (Type B)1 Display:Displays preset, current
time or preset time,
temperature, Z, Ü , Y ,
Ö and x2 l:Adjusts values up3
OFF:Switch heater off, or press
Y and OFF simultaneously
to confirm selection4 Y:Switch heater on, or press Y
and OFF simultaneously to
confirm selection5 k:Adjusts values downIf no buttons are pressed within
30 seconds the display automatically
turns off.9 Warning
When refuelling, switch off the
remote control unit as well as the
heater!
The remote control has a maximum
range of 1000 metres. The range may
be reduced due to environmental
conditions and as the battery
becomes weaker.
Remote control (Type B) fault
displays
Z:poor signal – adjust positionFAIL:error during signal
transmission –
move closer or check heater
fuseÜ:battery low – replace battery
Page 124 of 255

122Climate controlTeach remote control (Type B)
Up to four additional remote control
units may also be configured. During
additional teaching processes, the
oldest transmitter will be deleted each
time.
Remove the heater fuse for
five seconds, then refit the fuse.
Within two - six seconds press OFF
for one second. Teaching is
completed.
If the remote has not been used for a long period, press the OFF button six
times at intervals of two seconds,
then press and hold for another
two seconds, then wait two minutes.Manual control
Depending on version, the auxiliary
heater can also be switched on for the
last duration time or the default
duration 30 minutes, or cut-off
immediately, using the button on the
instrument panel. The LED in the
button confirms operation.
Battery replacement
Replace the battery when the range
of the remote control is reduced or
when the battery charge symbol
flashes.
Open the cover and replace the
battery (Type A: CR 2430, Type B:
2CR 11108, or equivalent), ensuring
the new battery is correctly installed
with the positive ( <) side facing the
positive terminals. Replace the cover
securely.
Dispose of old batteries in
accordance with environmental
regulations.
Batteries do not belong in household
waste. They must be disposed of at
an appropriate recycling collection
point.
Operation (Type A)
Heating Y
Select Y in the menu bar and confirm.
The predetermined heating duration,
e.g. L 30, flashes in the display. The
factory setting is 30 minutes.