186Driving and operating
Vehicle messages 3 123.
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 3 129 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 3 179.
■ Forward collision alert based on
front camera system
on vehicles with traditional cruise
control or none 3 176.
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
3 129.
Selecting the alert sensitivity
The alert sensitivity can be set to
near, medium or far.
Driving and operating187
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.
240Vehicle care
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.
Vehicle care241Instrument 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–
292IndexAAccessories and vehicle modifications .......................... 220
Active Emergency Braking .........190
Active head restraints ...................36
Adaptive cruise control .......116, 179
Adaptive forward lighting ..........
................................ 116, 138, 231
AdBlue ........................ 114, 163, 268
Adjustable air vents ...................153
Airbag and belt tensioners .........111
Airbag deactivation ..............58, 111
Airbag label................................... 53 Airbag system .............................. 53
Air conditioning regular operation ................................ 155
Air conditioning system .............. 148
Air intake .................................... 155
Air vents...................................... 153
Antilock brake system ................ 170
Antilock brake system (ABS) .....113
Anti-theft alarm system ................25
Anti-theft locking system .............. 25
Appearance care ........................263
Armrest ......................................... 41
Armrest storage ........................... 68
Ashtrays ..................................... 103
Automatic anti-dazzle ..................29
Automatic light control ...............136Automatic locking ........................23
Automatic transmission .............166
Auxiliary heater ........................... 153
B
Battery discharge protection ......146
Battery voltage ........................... 126
Bicycle rack .................................. 70
BlueInjection ............................... 163
Bonnet ....................................... 222
Brake and clutch fluid .................268
Brake and clutch system ...........112
Brake assist ............................... 172
Brake fluid .................................. 225
Brakes ............................... 170, 225
Breakdown.................................. 261
Bulb replacement ....................... 229
C Capacities .................................. 284
Cargo management system ........88
Car Pass ...................................... 19
Catalytic converter .....................163
Central locking system ................21
Centre console lighting ..............145
Centre console storage ...............69
Changing tyre and wheel size ...249
Charging system ........................ 111
Child locks ................................... 23
293
Child restraint installationlocations ................................... 61
Child restraints.............................. 60
Child restraint systems ................60
Cigarette lighter .........................103
Climate control ............................. 15
Climate control systems .............147
Clock........................................... 101
Code ........................................... 123
Control indicators........................ 107
Control of the vehicle .................156
Controls ........................................ 96
Convex shape .............................. 28
Coolant and antifreeze ...............268
Cruise control ....................116, 176
Cupholders .................................. 66
Curtain airbag system .................. 58
Curve lighting.............................. 138
D Danger, Warnings and Cautions ...4
Daytime running lights ...............138
Declaration of conformity ............288
DEF ............................................ 163
Diesel exhaust fluid ....................163
Diesel fuel system bleeding .......228
Diesel particle filter .............114, 162
Door open .................................. 116
Door panel storage .......................67
Doors ............................................ 24Driver assistance systems..........176
Driver Information Centre ...........117
Driving characteristics and towing tips .............................. 216
Driving hints ................................ 156
E Electric adjustment ......................28
Electrical system......................... 237
Electric parking brake .........112, 171
Electric parking brake fault .........112
Electronic climate control system 149
Electronic driving programmes ..168
Electronic Stability Control.......... 174
Electronic Stability Control and Traction Control system ..........114
Electronic Stability Control off..... 114
End-of-life vehicle recovery .......221
Engine compartment fuse box ...239
Engine coolant ........................... 224
Engine coolant temperature gauge ..................................... 106
Engine data ............................... 275
Engine exhaust .......................... 162
Engine identification ...................271
Engine oil ................... 222, 268, 272
Engine oil pressure ....................115
Entry lighting .............................. 145
Event data recorders ..................290
Exit lighting ................................ 145Exterior care .............................. 263
Exterior light ............................... 115
Exterior lighting ....................12, 135
Exterior mirrors ............................. 28
F
Fault ........................................... 168
First aid kit ................................... 92
Fixed air vents ........................... 154
Flex-Fix system ............................ 70
Fog light ..................................... 116
Fog lights ................................... 232
Folding mirrors ............................. 28
Folding tray .................................. 92
Following distance indication ......189
Forward collision alert................. 186
Front airbag system .....................57
Front fog lights ........................... 142
Front seats.................................... 37
Front storage ................................ 67
Fuel............................................. 206
Fuel consumption - CO 2-
Emissions ............................... 214
Fuel for diesel engines ..............206
Fuel for liquid gas operation .......207
Fuel for natural gas operation ...208
Fuel for petrol engines ...............206
Fuel gauge ................................. 105
Fuel selector .............................. 105
Fuses ......................................... 237