Keys, doors and windows21
FaultIf the central locking system cannot
be operated with the radio remote
control, the cause may be one of the
following:
■ Fault in radio remote control
■ Range exceeded
■ Battery voltage 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
Manual unlocking 3 22.Electronic key system
Enables a keyless operation of the
following functions:
■ Central locking system 3 22
■ Tailgate 3 28
■ Ignition switching on and starting the engine 3 150
The electronic key simply needs to be on the driver's person.
Additionally the electronic key
includes the functionality of the radio
remote control 3 20.
Handle with care, protect from
moisture and high temperatures and
avoid unnecessary operation.
Notice
Do not put the electronic key in the
load compartment or in front of the
Info-Display.
Replacing battery in electronic
key Replace the battery as soon as the
system no longer operates properly
or the range is reduced. The need for
battery replacement is indicated by a
message in the Driver Information
Centre 3 115.
Battery replacement, see radio
remote control 3 20.
Electronic key synchronisation The electronic key synchronises itselfautomatically during every starting
procedure.
116Instruments and controls
■ Ride control systems
■ Driver assistance systems
■ Cruise control
■ Speed limiter
■ Adaptive cruise control
■ Forward collision alert
■ Collision imminent braking system
■ Parking assist systems
■ Lighting, bulb replacement
■ Adaptive forward lighting
■ Wiper/washer system
■ Doors, windows
■ Side blind spot alert
■ Traffic sign assistant
■ Lane departure warning
■ Load compartment, boot lid
■ Radio remote control
■ Electronic key system
■ Keyless starting
■ Seat belts
■ Airbag systems
■ Engine and transmission
■ Tyre pressure■ Diesel particle filter
■ Vehicle battery status
Messages in the
Colour-Info-Display
Some important messages may
appear additionally in the
Colour-Info-Display. Press the
multifunction knob to confirm a
message. 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 not
fastened 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 adaptive cruise controldeactivates automatically.
■ If approaching a vehicle ahead too closely.
■ If a programmed speed or speed limit is exceeded.
■ If a warning message appears in the Driver Information Centre.
■ If the electronic key is not in the passenger compartment.
■ If the parking assist detects an object.
■ If an unintended lane change occurs.
■ 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.
■ If the trailer hitch is not engaged.
220Vehicle care
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.Wiper blade replacement
Wiper blades on the windscreen
Lift the wiper arm and open the
retaining clip.
314IndexAAccessories and vehicle modifications .......................... 212
Active Emergency Braking .........184
Active head restraints ...................45
Adaptive cruise control .......105, 172
Adaptive forward lighting ...105, 124
Adjustable air vents ...................144
Airbag and belt tensioners .........100
Airbag deactivation ..............59, 100
Airbag system .............................. 57
Air conditioning regular operation ................................ 146
Air conditioning system .............. 133
Air intake .................................... 145
Air vents...................................... 144
All-wheel drive ........................... 162
Antilock brake system ................ 162
Antilock brake system (ABS) .....102
Anti-theft alarm system ................33
Anti-theft locking system .............. 32
Appearance care ........................257
Apply footbrake .......................... 104
Armrest ................................... 52, 53
Armrest storage ........................... 67
Ashtrays ....................................... 89 Automatic anti-dazzle ..................38
Automatic climate control system .................................... 135Automatic dimming ......................37
Automatic light control ...............122
Automatic locking ........................26
Automatic transmission .............156
Autostop ..................................... 104
Auxiliary heater ........................... 144
B Battery discharge protection ......131
Battery voltage ........................... 117
Belts.............................................. 53
Bonnet ....................................... 214
Brake and clutch fluid .................261
Brake and clutch system ...........101
Brake assist ............................... 164
Brake fluid .................................. 217
Brakes ............................... 162, 217
Breakdown.................................. 253
Bulb replacement ....................... 221
C Capacities .................................. 287
Cargo management system ........72
Car Pass ...................................... 19
Catalytic converter .....................156
Central locking system ................22
Centre console lighting ..............130
Changing tyre and wheel size ...243
Charging system ........................ 100
Child locks ................................... 27
318
Tread depth ............................... 242
Trip odometer .............................. 95
Turn and lane-change signals ...127
Turn signal ................................... 99
Tyre chains ................................ 243
Tyre designations ......................239
Tyre pressure ............................ 239
Tyre pressure monitoring system ............................ 103, 240
Tyre pressures ........................... 288
Tyre repair kit ............................. 244
U Ultrasonic parking assist ...102, 186
Upholstery .................................. 258
Upshift ........................................ 102
Using this manual ..........................3
V Valet mode ................................. 113
Variable effort steering ...............102
Vehicle battery ........................... 218
Vehicle checks............................ 213
Vehicle data ................................ 265
Vehicle data recording and privacy ..................................... 311
Vehicle detected ahead ..............105
Vehicle dimensions .................... 285
Vehicle Identification Number ....263
Vehicle jack ................................ 238Vehicle messages .....................115
Vehicle personalisation .............117
Vehicle security ............................ 32
Vehicle specific data ......................3
Vehicle storage ........................... 212
Vehicle tools ............................... 238
Vehicle unlocking ........................... 6
Vehicle weight ........................... 274
Ventilating ..................................... 53
Ventilation ................................... 133
W
Warning chimes .........................116
Warning lights ............................... 95
Warning triangle .......................... 77
Washer and wiper systems .........13
Washer fluid ............................... 217
Wheel changing .........................247
Wheel covers ............................. 243
Wheels and tyres .......................239
Windows ....................................... 38
Windscreen................................... 38
Windscreen wiper/washer ...........83
Winter tyres ............................... 239
Wiper blade replacement ..........220
X Xenon headlights .......................224