Page 34 of 261

32Keys, doors and windowsActivation without monitoring of
passenger compartment and
vehicle inclination
Switch off the monitoring of
passenger compartment and vehicle
inclination when animals are being
left in the vehicle, because of high
volume ultrasonic signals or
movements triggering the alarm. Also switch off when the vehicle is on a
ferry or train.
1. Close tailgate, bonnet, windows.
2. Press o. LED in the button o
illuminates for a maximum of
10 minutes.
3. Close doors.
4. Activate the anti-theft alarm system.
Status message is displayed in the
Driver Information Centre.
Indication
LED in the o button button flashes
if the anti-theft alarm system is
activated.
Seek the assistance of a workshop in the event of faults.
Deactivation Radio remote control: Unlocking the
vehicle by pressing c deactivates the
anti-theft alarm system.
Electronic key system: Unlocking the
vehicle by pressing on one of the front
door handles at the markings
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.
Page 194 of 261

192Vehicle careAfter having reconnected the battery
of a vehicle equipped with an anti-
theft alarm system, wait 10 minutes
until you start the engine.
Replacing the vehicle battery Notice
Any deviation from the instructions
given in this section may lead to
temporary deactivation or
disturbance of the stop-start system.
When the vehicle battery is being replaced, please ensure that there
are no open ventilation holes in the
vicinity of the positive terminal. If a
ventilation hole is open in this area, it
must be closed off with a dummy cap, and the ventilation in the vicinity of the
negative terminal must be opened.
Ensure that the battery is always
replaced by the same type of battery.
The vehicle battery has to be
replaced by a workshop.
Stop-start system 3 136.Charging the vehicle battery9 Warning
On vehicles with stop-start
system, ensure that the charging potential does not exceed 14.6 V
when using a battery charger.
Otherwise the vehicle battery may be damaged.
Jump starting 3 219.
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 sulphuric 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 vehicle battery.
Diesel fuel system bleeding If the tank has been run dry, the diesel
fuel system must be bled. Switch on
the ignition three times for
15 seconds at a time. Then crank the
engine for a maximum of 40 seconds. Repeat this process after
no less than 5 seconds. If the engine fails to start, seek the assistance of a
workshop.
Page 256 of 261

254IndexAAccessories and vehicle modifications .......................... 186
Active emergency braking ....93, 156
Adaptive forward lighting ...........111
AdBlue .................................. 91, 140
Adjustable air vents ...................126
Advanced parking assist ............163
Airbag and belt tensioners ...........88
Airbag deactivation ................55, 88
Airbag label................................... 50 Airbag system .............................. 50
Air conditioning regular operation ................................ 128
Air conditioning system .............. 119
Air intake .................................... 128
Air vents...................................... 126
Antilock brake system ................ 147
Antilock brake system (ABS) .......90
Anti-theft alarm system ................31
Anti-theft locking system .............. 30
Appearance care ........................222
Armrest ................................... 45, 46
Ashtrays ....................................... 78 Automatic anti-dazzle ..................35
Automatic light control ...............110
Automatic locking ........................27
Automatic transmission .............143
Autostop ............................... 92, 136
Auxiliary heater ........................... 126B
Battery discharge protection ......117
Battery voltage ........................... 100 Belts.............................................. 47
BlueInjection ............................... 140
Bonnet ....................................... 188
Brake and clutch fluid .................230
Brake and clutch system .............90
Brake assist ............................... 148
Brake fluid .................................. 191
Brakes ............................... 147, 191
Breakdown.................................. 220
Bulb replacement ....................... 193
C Capacities .................................. 242
Catalytic converter .....................139
Central locking system ................23
Centre console lighting ..............116
Centre console storage ...............63
Changing tyre and wheel size ...210
Charging system .......................... 89
Child locks ................................... 28
Child restraint installation locations ................................... 59
Child restraints.............................. 56
Child restraint systems ................56
Cigarette lighter ........................... 78
Climate control ............................. 15
Climate control systems .............118