
Driving and operating197
Simultaneously a warning chime
sounds. Depress the brake pedal and
steer the vehicle, if it is required by the
situation.
Selecting the alert sensitivity Press V or E to set the alert
sensitivity to near, medium or far and
on some versions off.The first button press shows the
current setting on the Driver
Information Centre. Additional button
presses will change this setting. The
chosen setting will remain until it is
changed. The alert timing will vary
based on vehicle speed. The faster
the vehicle speed, the farther away
the alert will occur. Consider traffic
and weather conditions when
selecting the alert timing.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.
Deactivation
The system can be deactivated.
On forward collision alert with radar
sensor the system can be disabled by the personalisation menu, 3 124.

Driving and operating199On Uplevel display, select Info menu
via steering wheel buttons and press
o to select following distance
indication 3 115.
The minimum indicated distance is 0.5 seconds.
If there is no vehicle ahead or the vehicle ahead is out of range, two
dashes will be displayed: -.- sec.
If Adaptive cruise control is active,
this page shows the alert sensitivity
setting instead of following distance
setting. 3 188.
Active emergency braking
Active emergency braking can help to reduce the damage and injury from
crashes with vehicles and obstacles
directly ahead, when a collision can no longer be avoided either by
manual braking or by steering. Before the active emergency braking
applies, the driver is warned by the forward collision alert 3 195.
The feature uses various inputs (e.g.
camera sensor, radar sensor, brake
pressure, vehicle speed) to calculate
the probability of a frontal collision.9 Warning
This system is not intended to
replace the driver responsibility for driving the vehicle and looking
ahead. Its function is limited to
supplemental use only to reduce
the vehicle speed before a
collision.
The system may not react for
pedestrians or animals. After a
sudden lane change, the system
needs a certain time to detect the
next preceding vehicle.
The driver shall always be ready to take action and apply the brakes
and steer to avoid collisions.
Functionality
If equipped only with front camera the active emergency braking operates in
forward gear above walking speed up to 53 mph.
With radar sensor active emergency
braking operates in forward gear
above walking speed at all speeds.
A precondition is that forward collision
alert with front camera system is not
deactivated by pressing V on the
steering wheel 3 195or, with radar
sensor, that it is not deactivated in the
vehicle personalisation menu 3 124.
The system includes: ● brake preparation system
● emergency automatic braking

310IndexAAccessories and vehicle modifications .......................... 230
Active emergency braking ..........199
Adaptive cruise control .......114, 188
AdBlue ................................ 112, 168
Adjustable air vents ...................154
Airbag and belt tensioners .........109
Airbag deactivation ..............62, 109
Airbag label................................... 57
Airbag system .............................. 57
Air conditioning regular operation ................................ 155
Air conditioning system .............. 147
Air intake .................................... 155
Air vents...................................... 154
Antilock brake system ................ 178
Antilock brake system (ABS) .....111
Anti-theft alarm system ................35
Anti-theft locking system .............. 35
Appearance care ........................276
Armrest ................................... 52, 54
Armrest storage ........................... 71
Ashtrays ....................................... 99 Automatic anti-dazzle ..................40
Automatic light control ...............136
Automatic locking ........................28
Automatic transmission .............171
Autostop ..................................... 162
Auxiliary heater ........................... 154B
Battery discharge protection ......145
Battery voltage ........................... 124 Belts.............................................. 55
BlueInjection ............................... 168
Bonnet ....................................... 232
Brake and clutch fluid .................280
Brake and clutch system ...........110
Brake assist ............................... 181
Brake fluid .................................. 235
Brakes ............................... 178, 235
Breakdown.................................. 274
Bulb replacement ....................... 238
C Capacities .................................. 295
Cargo management system ........81
Catalytic converter .....................168
Central locking system ................23
Centre console lighting ..............144
Changing tyre and wheel size ...263
Charging system ........................ 110 Child locks ................................... 29
Child restraint installation locations ................................... 66
Child restraints.............................. 64
Child restraint systems ................64
Climate control ............................. 15
Climate control systems .............146
Clock............................................. 94

311CNG.................................... 105, 222
Control indicators........................ 108
Control of the vehicle .................157
Controls ........................................ 90
Convex shape .............................. 38
Coolant and antifreeze ...............280
Cruise control ....................113, 184
Cupholders .................................. 70
Curtain airbag system .................. 62
Curve lighting.............................. 137
D
Danger, Warnings and Cautions ...4
Daytime running lights ...............137
Declaration of conformity ............298
DEF ............................................ 168
Diesel exhaust fluid ....................168
Diesel fuel system bleeding .......237
Diesel particle filter ....................167
Door open .................................. 114
Doors ............................................ 29
Driver assistance systems ..........184
Driver Information Centre ...........115
Driving characteristics and towing tips .............................. 225
Driving hints ................................ 157
E Electric adjustment ......................38
Electrical system......................... 248
Electric parking brake .........110, 179Electric parking brake fault .........110
Electronic climate control system 149
Electronic driving programmes . ........................................ 173, 178
Electronic key system ...................21
Electronic Stability Control.......... 182
Electronic Stability Control and Traction Control system ..........111
Electronic Stability Control off..... 111
End-of-life vehicle recovery .......231
Engine compartment fuse box ...249
Engine coolant ........................... 234
Engine coolant temperature gauge ..................................... 106
Engine data ............................... 288
Engine exhaust .......................... 167
Engine identification ...................284
Engine oil ................... 233, 280, 285
Engine oil pressure ....................112
Entry lighting .............................. 144
Event data recorders ..................305
Exit lighting ................................ 144
Exterior care .............................. 276
Exterior light ............................... 113
Exterior lighting ....................12, 135
Exterior mirrors ............................. 38
F
Fault ................................... 173, 178
First aid kit ................................... 86Fixed air vents ........................... 154
Fog light ..................................... 113
Fog lights ................................... 240
Folding mirrors ............................. 38
Following distance ......................111
Following distance indication ......198
Forward collision alert................. 195
Fragrance diffuser ........................98
Front airbag system .....................61
Front fog lights ........................... 141
Front seats.................................... 46
Front storage ................................ 71
Fuel............................................. 220
Fuel for diesel engines ..............221
Fuel for natural gas operation ...222
Fuel for petrol engines ...............220
Fuel gauge ................................. 105
Fuel selector .............................. 105
Fuses ......................................... 248
G
Gauges ....................................... 103
Gear shifting ............................... 111
General information ...................225
Glovebox ..................................... 70
H Halogen headlights ....................238
Hand brake ......................... 178, 179
Hazard warning flashers ............140
Headlight flash ........................... 136