Driving and operating187
Vehicle messages 3 124.
Forward collision alert The forward collision alert can help to
avoid or reduce the damage caused
by front-end crashes.
A vehicle ahead is indicated by a
control indicator A.
If a vehicle directly ahead is
approached too quickly, a warning
chime and alert in the Driver
Information Centre is provided.
A precondition is that forward collision
alert is activated in the vehicle
personalisation menu 3 130 or that it
is not deactivated by pressing V
(depending on the system, see
following).
Depending on the vehicle's
equipment, there are two variants of
the forward collision alert available:
■ Forward collision alert based on
radar system
on vehicles equipped with adaptive cruise control 3 180.
■ Forward collision alert based on
front camera system
on vehicles with traditional cruise
control or none 3 177.
Forward collision alert based on radar system
The system uses the radar sensor
behind the radiator grille to detect a
vehicle directly ahead, in your path,
within a distance of max. 150 metres.
Activation
Forward collision alert operates
automatically above walking speed,
provided that Auto collision
preparation setting is not deactivated
in the vehicle personalisation menu
3 130.
Selecting the alert sensitivity
The alert sensitivity can be set to
near, medium or far.
188Driving and operating
Press E; the current setting is shown
in the Driver Information Centre.
Press E again to change the alert
sensitivity. The setting is also displayed in the top line of the Driver
Information Centre.Note that the alert timing sensitivity
setting is shared with the following
distance setting of the adaptive cruise control. So changing the alert timing
sensitivity changes the adaptive
cruise control following distance
setting.
Alerting the driver
A green illuminated vehicle ahead
control indicator A illuminates in the
instrument cluster when the system has detected a vehicle in the driving
path. When the distance to a
preceding moving vehicle gets too
small or when approaching another
vehicle too rapidly and a collision is
imminent, the collision alert symbol
pops-up in the Driver Information
Centre. Simultaneously a warning
chime sounds.
Depress the brake pedal, if it is
required by the situation.
Vehicle care241
No.Circuit15Engine control module16Starter17Transmission control module18Heated rear window19Front power windows20Rear power windows21Rear electrical centre22Left high beam (Halogen)23Headlamp washer system24Right low beam (Xenon)25Left low beam (Xenon)26Front fog lights27Diesel fuel heating28Stop-start system29Electric parking brake30ABS31Adaptive cruise controlNo.Circuit32Airbag33Adaptive forward lighting/Auto‐
matic light control34Exhaust gas recirculation35Exterior mirror/Rain sensor36Climate control37Canister vent solenoid38Vacuum pump39Central control module40Windscreen washer/Rear
window washer system41Right high beam (Halogen)42Radiator fan43Windscreen wiper44Windscreen wiper45Radiator fan46–No.Circuit47Horn48Radiator fan49Fuel pump50Headlamp levelling/Adaptive
forward lighting51Air shutter52Auxiliary heater/Diesel engine53Transmission control module/
Engine control module54Vacuum pump/Instrument
panel cluster/Heating ventila‐
tion/Air conditioning system
After having changed defective fuses,
close the fuse box cover and press
until it engages.
If the fuse box cover is not closed
correctly, malfunctions may occur.
242Vehicle careInstrument panel fuse box
In left-hand drive vehicles, the fuse
box is behind the storage
compartment in the instrument panel.
Open the compartment and push it to the left to unlock. Fold the
compartment down and remove it.
In right-hand drive vehicles, the fuse
box is located behind a cover in the
glovebox. Open the glovebox, then
open the cover and fold it down.
No.Circuit1Cruise control/Speed limiter/
Adaptive cruise control/Steering wheel controls2Exterior lights/Body control
module3Exterior lights/Body control
module4Infotainment system5Infotainment system/Instrument6Power outlet/Cigarette lighter7Power outlet8Left low beam/Body control
module9Right low beam/Body control
module/Airbag module10Door locks/Body control module11Interior fan12–13–
294IndexAAccessories and vehicle modifications .......................... 221
Active Emergency Braking .........191
Active head restraints ...................37
Adaptive cruise control .......117, 180
Adaptive forward lighting ..........
................................ 117, 139, 232
AdBlue ........................ 115, 164, 269
Adjustable air vents ...................154
Airbag and belt tensioners .........112
Airbag deactivation ..............59, 112
Airbag label................................... 54 Airbag system .............................. 54
Air conditioning regular operation ................................ 156
Air conditioning system .............. 149
Air intake .................................... 156
Air vents...................................... 154
Antilock brake system ................ 171
Antilock brake system (ABS) .....114
Anti-theft alarm system ................26
Anti-theft locking system .............. 26
Appearance care ........................264
Armrest ......................................... 42
Armrest storage ........................... 69
Ashtrays ..................................... 104
Automatic anti-dazzle ..................30
Automatic light control ...............137Automatic locking ........................24
Automatic transmission .............167
Auxiliary heater ........................... 154
B
Battery discharge protection ......147
Battery voltage ........................... 127
Bicycle rack .................................. 71
BlueInjection ............................... 164
Bonnet ....................................... 223
Brake and clutch fluid .................269
Brake and clutch system ...........113
Brake assist ............................... 173
Brake fluid .................................. 226
Brakes ............................... 171, 226
Breakdown.................................. 262
Bulb replacement ....................... 230
C Capacities .................................. 285
Cargo management system ........89
Car Pass ...................................... 20
Catalytic converter .....................164
Central locking system ................22
Centre console lighting ..............146
Centre console storage ...............70
Changing tyre and wheel size ...250
Charging system ........................ 112
Child locks ................................... 24
295
Child restraint installationlocations ................................... 62
Child restraints.............................. 61
Child restraint systems ................61
Cigarette lighter .........................104
Climate control ............................. 16
Climate control systems .............148
Clock........................................... 102
Code ........................................... 124
Control indicators........................ 108
Control of the vehicle .................157
Controls ........................................ 97
Convex shape .............................. 29
Coolant and antifreeze ...............269
Cruise control ....................117, 177
Cupholders .................................. 67
Curtain airbag system .................. 59
Curve lighting.............................. 139
D Danger, Warnings and Cautions ...4
Daytime running lights ...............139
Declaration of conformity ............289
DEF ............................................ 164
Diesel exhaust fluid ....................164
Diesel fuel system bleeding .......229
Diesel particle filter .............115, 163
Door open .................................. 117
Door panel storage .......................68
Doors ............................................ 25Driver assistance systems..........177
Driver Information Centre ...........118
Driving characteristics and towing tips .............................. 217
Driving hints ................................ 157
E Electric adjustment ......................29
Electrical system......................... 238
Electric parking brake .........113, 172
Electric parking brake fault .........113
Electronic climate control system 150
Electronic driving programmes ..169
Electronic Stability Control.......... 175
Electronic Stability Control and Traction Control system ..........115
Electronic Stability Control off..... 115
End-of-life vehicle recovery .......222
Engine compartment fuse box ...240
Engine coolant ........................... 225
Engine coolant temperature gauge ..................................... 107
Engine data ............................... 276
Engine exhaust .......................... 163
Engine identification ...................272
Engine oil ................... 223, 269, 273
Engine oil pressure ....................116
Entry lighting .............................. 146
Event data recorders ..................291
Exit lighting ................................ 146Exterior care .............................. 264
Exterior light ............................... 116
Exterior lighting ....................13, 136
Exterior mirrors ............................. 29
F
Fault ........................................... 169
First aid kit ................................... 93
Fixed air vents ........................... 155
Flex-Fix system ............................ 71
Fog light ..................................... 117
Fog lights ................................... 233
Folding mirrors ............................. 29
Folding tray .................................. 93
Following distance indication ......190
Forward collision alert................. 187
Front airbag system .....................58
Front fog lights ........................... 143
Front seats.................................... 38
Front storage ................................ 68
Fuel............................................. 207
Fuel consumption - CO 2-
Emissions ............................... 215
Fuel for diesel engines ..............207
Fuel for liquid gas operation .......208
Fuel for natural gas operation ...209
Fuel for petrol engines ...............207
Fuel gauge ................................. 106
Fuel selector .............................. 106
Fuses ......................................... 238