Keys, doors and windows35If 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
3 124 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.
124Climate controlFan speed
Adjust the air flow to select the
desired speed.
turn clockwise:increase air flowturn anti-clock‐
wise:decrease air flow
Note
Rear air conditioning cannot be
switched on during an Autostop.
Stop-start system 3 137.
Combi
Additional air conditioning is supplied to the rear passenger compartment
via the air vents located above the
driver and front passenger
compartment.
With the front passenger
compartment air conditioning system
switched on, adjust the air flow to
select the desired speed.
Ensure the air vents are open when in
use, to prevent ice forming in the
system due to lack of air movement.
Auxiliary heaterCoolant heater
The engine-independent, fuel-
powered coolant heater provides
rapid heating of the engine coolant to
enable heating of the vehicle interior
without the engine running.
Note
Depending on version, an additional
coolant heater may be switched on
automatically to speed up heating
when the ignition is on and the
outside temperature is below 5 ℃.9 Warning
Do not operate the system when
refuelling, when dust or
combustible vapours are present
or in enclosed spaces (e.g.
garage).
Before starting or programming the
system to start, turn the vehicle's
climate control system to heat, set the
air distribution to V and turn the fan
on.
Switch off when not required. Heating stops automatically after the
programmed runtime. It will also
cease to operate if the vehicle fuel
level drops too low.
During operation, power from the
vehicle battery is used. The driving
time should therefore be at least as
long as the heating time. For short
journey times, check the vehicle
battery regularly and recharge if
necessary.
To ensure efficient performance,
briefly operate the auxiliary heater
once a month.
Climate control127Manual 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 press
G to confirm. The predetermined
heating duration, e.g. L 30, flashes in
the display. The factory setting is 30 minutes.
Adjust the heating duration using k
or l and confirm. The value can be
set from ten to 120 minutes. Due to
the power consumption, note the
heating duration.
To switch off, select Y in the menu bar
again and press d.
Ventilation x
Select x in the menu bar and press
G to confirm.
Adjust the ventilation duration using k or l and confirm. The value can
be set from ten to 120 minutes. Due
to the power consumption, note the
heating duration.
To switch off, select x in the menu bar
again and press d.
Programming P
Up to three preset departure times
can be programmed, either during
one day or over one week.
● Select P in the menu bar and
press G to confirm.
● Select desired preset memory number P1, P2 or P3 and
confirm.
Vehicle care183Replacing the vehicle batteryEnsure that the battery is always
replaced by the same type of battery.
Seek the assistance of a workshop to
have the vehicle battery replaced.
Stop-start system 3 137.
Charging the vehicle battery9 Warning
On vehicles with stop-start
system, ensure that the charging potential does not exceed
14.6 volts when using a battery
charger. Otherwise the vehicle
battery might be damaged.
9 Danger
Ensure adequate ventilation when
charging the battery. There is a
risk of explosion if gases
generated during charging are
allowed to accumulate!
Jump starting 3 213.
Warning label
Meaning of symbols:
● No sparks, naked flames or smoking.
● Always shield eyes. Explosive gases can cause blindness or
injury.
● Keep the vehicle battery out of reach of children.
● The vehicle battery contains sulfuric acid which could cause
blindness or serious burn
injuries.
● See the Owner's Manual for further information.
● Explosive gas may be present in the vicinity of the battery.
Additional battery
Depending on the vehicle's auxiliary
equipment, certain models may have
an additional battery mounted under
the right-hand front seat.
Note
The additional battery is
automatically connected to the main vehicle battery only when the engine
is running. It does not need to be
256IndexAAbsorptive Glass Mat battery .....182
Accessories and vehicle modifications .......................... 176
Adaptive forward lighting ...112, 188
AdBlue ........................ 100, 144, 223
AdBlue gauge ............................... 92
AdBlue tank ................................ 246
Adjustable air vents ...................130
Airbag and belt tensioners ...........97
Airbag deactivation ................61, 97
Airbag label................................... 57 Airbag system .............................. 57
Air conditioning regular operation ................................ 131
Air conditioning system .............. 118
Air intake .................................... 131
Air suspension ........................... 141
Air suspension system................ 216
Air vents...................................... 130
Antifreeze ................................... 179
Antilock brake system ................ 155
Antilock brake system (ABS) .......99
Anti-theft alarm system ................34
Anti-theft bolts............................. 208
Anti-theft locking system .............. 34
Anti-theft security lock ..................23
Appearance care ........................217
Armrest ........................................ 49
Ashtrays ....................................... 90Automatic light control ...............109
Automatic locking ...................24, 27
Autostop ....................... 18, 136, 137
Auxiliary heater ........................... 124
B Battery ........................................ 182
Battery discharge protection ......116
Battery, jump starting.................. 213
Belts.............................................. 53
BlueInjection ............................... 144
Bonnet ....................................... 177
Bottle holders................................ 74 Brake assist ............................... 157
Brake fluid .......................... 181, 223
Brakes ............................... 155, 181
Brake system ............................... 99
Breakdown.................................. 216
Bulb replacement ....................... 185
Bus Rear seats ................................. 50
C Cabin bulkhead grille ....................80
Capacities .................................. 246
Cargo management system ........77
Car Pass ...................................... 21
Catalytic converter .....................143
Central locking system ................24
Centre high-mounted brake light 192
Changing tyre and wheel size ...204