Page 198 of 327

196Driving and operatingsudden lane change, the system
needs a certain time to detect the
next preceding vehicle.
The complete attention of the
driver is always required while
driving. The driver shall always be ready to take action and apply the brakes and steer to avoid
collisions. The system is designed
to work with all occupants wearing their seat belts.
System limitations
The active emergency braking has
limited or no function during rain,
snow or heavy dirt, as the radar
sensor can be covered by a water
film, dust, ice or snow. In case of
sensor blockage, clean the sensor
cover.
In some cases, the active emergency braking system may provide an
automatic braking in situations that
seem to be unnecessary, for instance
in parking garages, due to traffic signs
in a curve or due to vehicles in
another lane. This is normal
operation, the vehicle does not need
service. Firmly apply the accelerator
pedal to override the automatic
braking.
Settings
Settings can be changed in the
vehicle personalisation menu in the
Colour-Info-Display.
Select the relevant setting in Settings,
I Vehicle in the Colour-Info-Display.
Colour-Info-Display 3 117.
Vehicle personalisation 3 120.
Fault
In the event of a system service
requirement, a message is displayed
in the Driver Information Centre.
If the system does not work as it
should do, vehicle messages are
displayed in the Driver Information
Centre.
Vehicle messages 3 119.
Parking assist
9 Warning
The driver bears full responsibility
for the parking manoeuvre.
Always check the surrounding
area when driving backwards or
forwards while using parking
assist system.
Page 227 of 327

Vehicle care225Vehicle careGeneral Information...................226
Accessories and vehicle modifications .......................... 226
Vehicle storage ........................226
End-of-life vehicle recovery .....227
Vehicle checks ........................... 227
Performing work ......................227
Bonnet ..................................... 227
Engine oil ................................. 228
Automatic transmission fluid ....229
Engine coolant ......................... 230
Power steering fluid .................231
Washer fluid ............................ 231
Brakes ..................................... 232
Brake fluid ............................... 232
Vehicle battery ......................... 232
Diesel fuel system bleeding .....234
Wiper blade replacement ........234
Bulb replacement .......................235
Halogen headlights ..................236
Xenon headlights .....................238
Fog lights ................................. 240
Tail lights ................................. 241
Side turn signal lights ..............243
Number plate light ...................244Interior lights ............................ 245
Instrument panel illumination ...245
Electrical system ........................245
Fuses ....................................... 245
Engine compartment fuse box . 247
Instrument panel fuse box .......249
Load compartment fuse box ....250
Vehicle tools .............................. 252
Tools ........................................ 252
Wheels and tyres .......................253
Winter tyres ............................. 253
Tyre designations ....................253
Tyre pressure .......................... 253
Tyre pressure monitoring system .................................... 255
Tread depth ............................. 256
Changing tyre and wheel size . 257
Wheel covers ........................... 257
Tyre chains .............................. 258
Tyre repair kit .......................... 258
Wheel changing .......................261
Spare wheel ............................ 263
Jump starting ............................. 266
Towing ....................................... 267
Towing the vehicle ...................267
Towing another vehicle ...........269Appearance care .......................271
Exterior care ............................ 271
Interior care ............................. 273
Page 234 of 327

232Vehicle careCaution
Only washer fluid with a sufficient
antifreeze concentration provides
protection at low temperatures or
after a sudden drop in
temperature.
Use of washer fluid containing
isopropanol can damage exterior
lamps.
Washer fluid 3 275.
Brakes In the event of minimum thickness ofthe brake lining, a squealing noise
sounds during braking.
Continued driving is possible but
have the brake lining replaced as
soon as possible.
Once new brake linings are installed,
do not brake unnecessarily hard for
the first few journeys.
Brake fluid9 Warning
Brake fluid is poisonous and
corrosive. Avoid contact with eyes, skin, fabrics and painted surfaces.
The brake fluid level must be betweenthe MIN and the MAX marks.
If fluid level is below MIN seek the
assistance of a workshop.
Brake and clutch fluid 3 275.
Vehicle battery
The vehicle battery is maintenance-
free provided that the driving profile
allows sufficient charging of the
battery. Short-distance-driving and
frequent engine starts can discharge
the battery. Avoid the use of
unnecessary electrical consumers.
Batteries do not belong in household
waste. They must be disposed of at
an appropriate recycling collection
point.
Laying up the vehicle for more than
four weeks can lead to vehicle battery discharge. Disconnect the clamp from
the negative terminal of the vehicle
battery.
Ensure the ignition is switched off
before connecting or disconnecting
the vehicle battery.
Battery discharge protection 3 139.
Page 322 of 327

320IndexAAccessories and vehicle modifications .......................... 226
Active emergency braking ..........195
Active head restraints ...................46
Adaptive cruise control .......109, 183
Adaptive forward lighting ...109, 132
AdBlue ................................ 107, 164
Adjustable air vents ...................151
Airbag and belt tensioners .........104
Airbag deactivation ..............62, 104
Airbag label................................... 57 Airbag system .............................. 57
Air conditioning regular operation ................................ 153
Air conditioning system .............. 140
Air intake .................................... 152
Air vents...................................... 151
All-wheel drive ........................... 172
Antilock brake system ................ 173
Antilock brake system (ABS) .....106
Anti-theft alarm system ................34
Anti-theft locking system .............. 33 Appearance care ........................271
Armrest ................................... 52, 53
Armrest storage ........................... 70
Ashtrays ....................................... 92 Automatic anti-dazzle ..................39
Automatic climate control system .................................... 142Automatic dimming ......................38
Automatic light control ...............129
Automatic locking ........................27
Automatic transmission .............167
Automatic transmission fluid .......229
Autostop ............................. 109, 159
Auxiliary heater ........................... 151
B
Baselevel display ........................110
Battery discharge protection ......139
Battery voltage ........................... 120
Belts.............................................. 54
BlueInjection ............................... 164
Bonnet ....................................... 227
Brake and clutch fluid .................275
Brake and clutch system ...........105
Brake assist ............................... 175
Brake fluid .................................. 232
Brakes ............................... 173, 232
Breakdown.................................. 267
Bulb replacement ....................... 235
C Capacities .................................. 293
Cargo management system ........76
Car Pass ...................................... 21
Catalytic converter .....................164
Central locking system ................24
Centre console lighting ..............138
Changing tyre and wheel size ...257