Driving and operating191The 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 3 118.
Vehicle personalisation 3 122.
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 3 121.
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 3 122.
Driving and operating193
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 3 122.
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
194Driving and operatingFollowing distanceindication
The following distance indication
displays the distance to a preceding
moving vehicle. The front camera in
the windscreen and the Radar sensor
are used to detect the distance of a
vehicle directly ahead in the vehicle's path. It is active at speeds above
25 mph.
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 3 113
On Uplevel display, select Info menu
via steering wheel buttons and press
o to select following distance
indication 3 113.
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 3 184.
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 3 191.
246Vehicle careNo.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 .......................... 226
Active emergency braking ..........194
Adaptive cruise control .......112, 184
AdBlue ................................ 110, 168
Adjustable air vents ...................154
Airbag and belt tensioners .........107
Airbag deactivation ..............62, 107
Airbag label................................... 57
Airbag system .............................. 57
Air conditioning regular operation ................................ 155
Air conditioning system .............. 147
Air intake .................................... 155
Air vents...................................... 154
Antilock brake system ................ 174
Antilock brake system (ABS) .....109
Anti-theft alarm system ................35
Anti-theft locking system .............. 35
Appearance care ........................272
Armrest ................................... 52, 54
Armrest storage ........................... 71
Ashtrays ....................................... 97 Automatic anti-dazzle ..................40
Automatic light control ...............135
Automatic locking ........................28
Automatic transmission .............171
Autostop ..................................... 162
Auxiliary heater ........................... 154B
Battery discharge protection ......144
Battery voltage ........................... 122 Belts.............................................. 55
BlueInjection ............................... 168
Bonnet ....................................... 228
Brake and clutch fluid .................277
Brake and clutch system ...........108
Brake assist ............................... 177
Brake fluid .................................. 231
Brakes ............................... 174, 231
Breakdown.................................. 270
Bulb replacement ....................... 234
C Capacities .................................. 288
Cargo management system ........81
Catalytic converter .....................167
Central locking system ................23
Centre console lighting ..............143
Changing tyre and wheel size ...259
Charging system ........................ 108 Child locks ................................... 29
Child restraint installation locations ................................... 66
Child restraints.............................. 64
Child restraint systems ................64
Climate control ............................. 15
Climate control systems .............146
Clock............................................. 94
305CNG.................................... 103, 217
Control indicators........................ 106
Control of the vehicle .................157
Controls ........................................ 90
Convex shape .............................. 38
Coolant and antifreeze ...............277
Cruise control ....................111, 180
Cupholders .................................. 70
Curtain airbag system .................. 62
Curve lighting.............................. 138
D
Danger, Warnings and Cautions ...4
Daytime running lights ...............138
Declaration of conformity ............292
DEF ............................................ 168
Diesel exhaust fluid ....................168
Diesel fuel system bleeding .......233
Door open .................................. 112
Doors ............................................ 29
Driver assistance systems ..........180
Driver Information Centre ...........113
Driving characteristics and towing tips .............................. 221
Driving hints ................................ 157
E Electric adjustment ......................38
Electrical system......................... 244
Electric parking brake .........108, 175
Electric parking brake fault .........108Electronic climate control system 149
Electronic driving programmes ..172
Electronic key system ...................21
Electronic Stability Control.......... 178
Electronic Stability Control and Traction Control system ..........109
Electronic Stability Control off..... 109
End-of-life vehicle recovery .......227
Engine compartment fuse box ...245
Engine coolant ........................... 230
Engine coolant temperature gauge ..................................... 104
Engine data ............................... 283
Engine exhaust .......................... 166
Engine identification ...................280
Engine oil ................... 229, 277, 281
Engine oil pressure ....................110
Entry lighting .............................. 143
Event data recorders ..................299
Exhaust filter ............................... 166
Exit lighting ................................ 144
Exterior care .............................. 272
Exterior light ............................... 111
Exterior lighting ....................12, 134
Exterior mirrors ............................. 38
F
Fault ........................................... 173
First aid kit ................................... 85
Fixed air vents ........................... 154Folding mirrors ............................. 38
Following distance ......................109
Following distance indication ......194
Forward collision alert................. 191
Front airbag system .....................61
Front fog lights ...........111, 141, 236
Front seats.................................... 46
Front storage ................................ 71
Fuel............................................. 215
Fuel for diesel engines ..............217
Fuel for natural gas operation ...217
Fuel for petrol engines ...............215
Fuel gauge ................................. 103
Fuel selector .............................. 103
Fuses ......................................... 244
G Gauges ....................................... 101
Gear selection ........................... 171
Gear shifting ............................... 109
General information ...................220
Glovebox ..................................... 70
H Halogen headlights ....................234
Hand brake ......................... 174, 175
Hazard warning flashers ............140
Headlight flash ........................... 137
Headlight range adjustment ......137
Headlights................................... 134
Headlights when driving abroad 138