Page 23 of 261

Keys, doors and windows21Radio remote control
Used to operate:■ central locking system
■ anti-theft locking system
■ anti-theft alarm system
The radio remote control has a range of approx. 20 metres. It can be
restricted by external influences. The
hazard warning flashers confirm
operation.
Handle with care, protect from
moisture and high temperatures and
avoid unnecessary operation.
Fault
If the central locking system cannot
be operated with the radio remote
control, it may be due to the following:
■ The range is exceeded.
■ The battery voltage is too low.
■ Frequent, repeated operation of the
radio remote control while not in
range, which will require re-
synchronisation.
■ 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 22.
Basic settings
Some settings can be changed in the Info-Display.
Vehicle personalisation 3 106.
Radio remote control battery
replacement
Replace the battery as soon as the
range reduces.
Batteries do not belong in household
waste. They must be disposed of at
an appropriate recycling collection
point.
Extend the key and open the unit
sideways. Replace the battery
(battery type CR 2032), paying
attention to the installation position.
Close the unit and synchronise.
Page 107 of 261

Instruments and controls105
The system displays messages
regarding the following topics:
■ service messages
■ fluid levels
■ anti-theft alarm system
■ brakes
■ ride control systems
■ cruise control, speed limiter
■ forward collision alert
■ parking assist systems
■ lighting, bulb replacement
■ wiper/washer system
■ doors, windows
■ side blind spot alert
■ traffic sign assistant
■ lane departure warning
■ radio remote control
■ seat belts
■ airbag systems
■ engine and transmission
■ tyre pressure
■ diesel particle filter
■ vehicle battery statusVehicle messages on
Colour-Info-Display Some important messages appear
additionally in the
Colour-Info-Display. Some
messages only pop-up for a few
seconds.
Warning chimes When starting the engine or
whilst driving
Only one warning chime will sound at a time.
The warning chime regarding
unfastened seat belts has priority
over any other warning chime.
■ If seat belt is not fastened.
■ If a door or the tailgate is not fully closed when starting off.
■ If a certain speed is exceeded with parking brake applied.
■ If a programmed speed is exceeded.■ If a warning message appears in the Driver Information Centre (DIC)or Info-Display.
■ If the parking assist detects an object.
■ If unintended lane change occurs.
■ If the reverse gear is engaged and the rear end carrier extended.
■ If the diesel particle filter has reached the maximum filling level.
When the vehicle is parked and/ or the driver's door is opened ■ When the key is in the ignition switch.
■ With exterior lights on.
During an Autostop ■ If the driver's door is opened.
Battery voltage
Uplevel-Display
When the vehicle battery voltage is
running low, a warning message will
appear in the Driver Information
Centre.
Page 256 of 261

254IndexAAccessories and vehicle modifications .......................... 183
Adjustable air vents ...................128
Airbag and belt tensioners ...........90
Airbag deactivation ................47, 90
Airbag label................................... 42 Airbag system .............................. 42
Air conditioning regular operation ................................ 129
Air conditioning system .............. 121
Air intake .................................... 129
Air vents...................................... 128
Antilock brake system ................ 145
Antilock brake system (ABS) .......91
Anti-theft alarm system ................26
Anti-theft locking system .............. 26
Appearance care ........................227
Ashtrays ....................................... 82
Automatic anti-dazzle ..................29
Automatic light control ...............111
Automatic locking ........................24
Automatic transmission .............138
Autostop ....................................... 94
B Battery discharge protection ......119
Battery voltage ........................... 105 Belts.............................................. 39Bicycle rack .................................. 58
Bonnet ....................................... 185
Brake and clutch fluid .................232
Brake and clutch system .............91
Brake assist ............................... 146
Brake fluid .................................. 188
Brakes ............................... 145, 188
Breakdown.................................. 225
Bulb replacement ....................... 191
C Capacities .................................. 248
Car Pass ...................................... 20
Catalytic converter .....................137
Central locking system ................22
Centre high-mounted brake light 199
Changing tyre and wheel size ...212
Charging system .......................... 90
Child locks ................................... 24
Child restraint installation locations ................................... 50
Child restraints.............................. 48
Child restraint systems ................48
Cigarette lighter ........................... 82
City mode ................................... 149
Climate control ............................. 15 Climate control systems .............120
Clock ............................................ 80
Code ........................................... 103
Colour-Info-Display .....................101
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258
Tyre pressures ........................... 249
Tyre repair kit ............................. 213
U Ultrasonic parking assist ...... 92, 156
Underseat storage .......................58
Upholstery .................................. 230
Using this manual ..........................3
V
Vehicle battery ........................... 189
Vehicle checks............................ 184
Vehicle data ................................ 236
Vehicle data recording and privacy ..................................... 252
Vehicle detected ahead ................95
Vehicle dimensions .................... 247
Vehicle Identification Number ....234
Vehicle jack ................................ 205
Vehicle messages .....................103
Vehicle personalisation .............106
Vehicle security ............................ 26
Vehicle specific data ......................3
Vehicle storage ........................... 183
Vehicle tools ............................... 205
Vehicle unlocking ........................... 6 Vehicle weight ........................... 245
Ventilation ................................... 120W
Warning chimes .........................105
Warning lights ............................... 83
Warning triangle .......................... 71
Washer and wiper systems .........14
Washer fluid ............................... 188
Wheel changing .........................219
Wheel covers ............................. 213
Wheels and tyres .......................206
Windows ....................................... 29
Windscreen................................... 29
Windscreen wiper/washer ...........77
Winter tyres ............................... 206
Wiper blade replacement ..........191
X Xenon headlights .......................194
Xenon lighting system ................113