192Driving and operatingThe radar unit is mounted behind the
radiator grille behind or below the
brand emblem.9 Warning
The radar unit was aligned
carefully during manufacture.
Therefore, in the event of a front-
end impact, do not use the system. The front bumper may appear to
be intact, however the sensor
behind can be out of position and
react incorrectly. After an
accident, consult a workshop to
verify and adjust the radar unit
position.
Settings
Settings can be changed in the
vehicle personalisation menu in the
Info Display.
Select the relevant setting in Settings
I Vehicle in the Info Display.
Info Display 3 119.
Vehicle personalisation 3 123.
Fault
If the adaptive cruise control does not work due to temporary conditions
(e.g. blockage by ice, overheated
brakes or low speed manoeuvres) or
if there is a permanent system error,
then a message is displayed in the
Driver Information Centre.
Vehicle messages 3 122.
Forward collision alert The forward collision alert may help toavoid or reduce the harm caused by
front-end crashes.
If the vehicle is equipped with
conventional cruise control, the
forward collision alert uses the front
camera in the windscreen to detect a
vehicle directly ahead, in your path.
If the vehicle is equipped with
adaptive cruise control, the forward
collision alert uses the radar sensor to detect a vehicle directly ahead, in
your path.
A vehicle ahead is indicated by the
control indicator A.
If a vehicle directly ahead is
approached too quickly, a warning
chime and alert in the Driver
Information Centre is provided.
Additionally the driver gets notified by
a flashing red LED stripe which is
projected on the windscreen in the
driver's field of view.
A precondition is that forward collision
alert with front camera system is not
deactivated by pressing V on the
steering wheel or, with radar sensor,
that it is not deactivated in the vehicle
personalisation menu 3 123.
194Driving and operating
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 3 123.
On forward collision alert with front
camera press V repeatedly until
Forward Collision Alert Off appears in
the Driver Information Centre.
If the forward collision alert was
deactivated, alert sensitivity is set to "medium" when ignition is switchedon next time.
The last selected setting will be stored
when the ignition is switched off.
General information9 Warning
Forward collision alert is just a
warning system and does not
apply the brakes. When
approaching a vehicle ahead too
rapidly, it may not provide you
enough time to avoid a collision.
The driver accepts full
responsibility for the appropriate
following distance based on traffic, weather and visibility conditions.
The complete attention of the
driver is always required while
driving. The driver must always be
ready to take action and apply the
brakes.
System limitations
Forward collision alert is designed to warn on vehicles only, but may reactalso to other objects.
In the following cases, forward
collision alert may not detect a vehicle ahead or sensor performance is
limited:
● driving on winding or hilly roads● during nighttime driving
● weather limits visibility, such as fog, rain, or snow
● the sensor in the windscreen is blocked by snow, ice, slush, mud,dirt, windscreen damage or
affected by foreign items, e.g.
stickers
Driving and operating195Following distanceindication
The following distance indication
displays the distance to a preceding
moving vehicle. The front camera in
the windscreen is used to detect the
distance of a vehicle directly ahead in
the vehicle's path. It is active at
speeds above 40 km/h.
When a preceding vehicle is detected
ahead, the distance is indicated in
seconds, displayed on a page in the
Driver Information Centre.
On Midlevel display, choose Info
Menu ? via MENU on the indicator
lever and turn the adjuster wheel to
choose following distance indication
page 3 114
On Uplevel display, select Info menu
via steering wheel buttons and press o to select following distance
indication 3 114.
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 3 185.
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 3 192.
Vehicle care247No.Circuit1Starter2Starter3Exhaust sensor4Engine control module5Engine functions / Aeroshutter6Transmission control module7Forward collision alert / Adap‐
tive Cruise Control8Engine control module9Climate control system10Diesel exhaust system11Tailgate locking system / Trans‐ mission12Seat lumbar massage13After boil pump14Diesel exhaust system15Exhaust sensor16Fuel injectionNo.Circuit17Fuel injection18Diesel exhaust system19Diesel exhaust system20–21–22ABS23Washer system for windscreen
and rear window24Washer Headlamp25Diesel fuel heating26Transmission control module27Power tailgate module28–29Heated rear window30Mirror defrost31Anti theft warning module
304IndexAAccessories and vehicle modifications .......................... 227
Active emergency braking ..........195
Adaptive cruise control .......113, 185
AdBlue ................................ 111, 169
Adjustable air vents ...................155
Airbag and belt tensioners .........108
Airbag deactivation ..............63, 108
Airbag label................................... 58
Airbag system .............................. 58
Air conditioning regular operation ................................ 156
Air conditioning system .............. 148
Air intake .................................... 156
Air vents...................................... 155
Antilock brake system ................ 175
Antilock brake system (ABS) .....110
Anti-theft alarm system ................36
Anti-theft locking system .............. 36
Appearance care ........................273
Armrest ................................... 53, 55
Armrest storage ........................... 72
Ashtrays ....................................... 98 Automatic anti-dazzle ..................41
Automatic light control ...............136
Automatic locking ........................29
Automatic transmission .............172
Autostop ..................................... 163
Auxiliary heater ........................... 155B
Battery discharge protection ......145
Battery voltage ........................... 123 Belts.............................................. 56
BlueInjection ............................... 169
Bonnet ....................................... 229
Brake and clutch fluid .................278
Brake and clutch system ...........109
Brake assist ............................... 178
Brake fluid .................................. 232
Brakes ............................... 175, 232
Breakdown.................................. 271
Bulb replacement ....................... 235
C Capacities .................................. 289
Cargo management system ........82
Catalytic converter .....................168
Central locking system ................24
Centre console lighting ..............144
Changing tyre and wheel size ...260
Charging system ........................ 109 Child locks ................................... 30
Child restraint installation locations ................................... 67
Child restraints.............................. 65
Child restraint systems ................65
Climate control ............................. 16
Climate control systems .............147
Clock............................................. 95
305CNG.................................... 104, 218
Control indicators........................ 107
Control of the vehicle .................158
Controls ........................................ 91
Convex shape .............................. 39
Coolant and antifreeze ...............278
Cruise control ....................112, 181
Cupholders .................................. 71
Curtain airbag system .................. 63
Curve lighting.............................. 139
D
Danger, Warnings and Cautions ...4
Daytime running lights ...............139
Declaration of conformity ............293
DEF ............................................ 169
Diesel exhaust fluid ....................169
Diesel fuel system bleeding .......234
Door open .................................. 113
Doors ............................................ 30
Driver assistance systems ..........181
Driver Information Centre ...........114
Driving characteristics and towing tips .............................. 222
Driving hints ................................ 158
E Electric adjustment ......................39
Electrical system......................... 245
Electric parking brake .........109, 176
Electric parking brake fault .........109Electronic climate control system 150
Electronic driving programmes ..173
Electronic key system ...................22
Electronic Stability Control.......... 179
Electronic Stability Control and Traction Control system ..........110
Electronic Stability Control off..... 110
End-of-life vehicle recovery .......228
Engine compartment fuse box ...246
Engine coolant ........................... 231
Engine coolant temperature gauge ..................................... 105
Engine data ............................... 284
Engine exhaust .......................... 167
Engine identification ...................281
Engine oil ................... 230, 278, 282
Engine oil pressure ....................111
Entry lighting .............................. 144
Event data recorders ..................300
Exhaust filter ............................... 167
Exit lighting ................................ 145
Exterior care .............................. 273
Exterior light ............................... 112
Exterior lighting ....................13, 135
Exterior mirrors ............................. 39
F
Fault ........................................... 174
First aid kit ................................... 86
Fixed air vents ........................... 155Folding mirrors ............................. 39
Following distance ......................110
Following distance indication ......195
Forward collision alert................. 192
Front airbag system .....................62
Front fog lights ...........112, 142, 237
Front seats.................................... 47
Front storage ................................ 72
Fuel............................................. 216
Fuel for diesel engines ..............218
Fuel for natural gas operation ...218
Fuel for petrol engines ...............216
Fuel gauge ................................. 104
Fuel selector .............................. 104
Fuses ......................................... 245
G Gauges ....................................... 102
Gear selection ........................... 172
Gear shifting ............................... 110
General information ...................221
Glovebox ..................................... 71
H Halogen headlights ....................235
Hand brake ......................... 175, 176
Hazard warning flashers ............141
Headlight flash ........................... 138
Headlight range adjustment ......138
Headlights................................... 135
Headlights when driving abroad 139