188Driving and operatingRadar unit
The 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, after a frontal accident, 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
correct the adaptive cruise control
sensor position.
Settings
Settings can be changed in the
vehicle personalisation menu in the
Colour-Info-Display.
Select the relevant setting in Settings,
I Vehicle in the Colour-Info-Display.
Info-Display 3 110.
Vehicle personalisation 3 116.
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 3 114.
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
and front camera 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 or a pop up
symbol in the head-up display which
is projected on the windscreen in the
driver's field of view.
190Driving and operating
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 in the personalisation menu, 3 116.
If the forward collision alert was
deactivated, alert sensitivity is set to
"medium" when ignition is switched on 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.
Driving and operating191In 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.
Following distance indication
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 Baselevel display, choose Info
Menu ? via MENU on the turn
signal lever and turn the adjuster wheel to choose following distance
indication page, 3 103
On Mid- and Uplevel display, select
Info menu via steering wheel buttons
and press å to select following
distance indication 3 103.
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. 3 180.
System limitations In the following cases, following
distance indication sensor
performance is limited:
● Driving on winding or hilly roads.● During nighttime driving.
196Driving and operatingWhen approaching a detected
pedestrian too quickly, a red flashing
LED alert or the pop-up symbol 7 in
the head-up display is projected on the windscreen in the driver's field of
view. A warning chime is provided.
The brake system may prepare for
driver braking to occur more rapidly
which can cause a brief, mild
deceleration. Continue to apply the
brake pedal as required.
Cruise control or Adaptive cruise
control may be disengaged when the
Front pedestrian alert occurs.
Automatic braking If a crash into a pedestrian directly
ahead is imminent, and the brakes
have not been applied, Automatic
braking may automatically brake
moderately or brake hard. This can
help to avoid some very low speed
pedestrian crashes or reduce
pedestrian injury.
Automatic braking levels may be reduced under certain conditions,
such as higher speeds.If this happens, automatic braking
may engage the Electric parking
brake to hold the vehicle at a stop.
Release the parking brake. A firm
press of the accelerator pedal will
also release Automatic braking and
Electric parking brake 3 170.
This system includes Intelligent brake assist, and the Emergency automatic
braking system may also respond to
pedestrians. See Active emergency
braking 3 192.
Automatic braking can be disabled in
the vehicle personalisation menu
3 116.
General information9 Warning
The driver must always be ready
to take action and apply the brakes and steer to avoid collisions.
9 Warning
Front pedestrian braking may alert
or automatically brake the vehicle
suddenly in situations where it is
unexpected and undesired. It
could falsely alert or brake for
objects similar in shape or size to
pedestrians, including shadows.
This is normal operation and the
vehicle does not need a service.
To override Automatic braking,
firmly depress the accelerator
pedal, if it is safe to do so.
9 Warning
Using the Front pedestrian braking
system while towing a trailer couldcause loss of vehicle control and
crash. Turn the system to Alert or
Off in the vehicle personalisation
when towing a trailer. Vehicle
personalisation 3 116.
294IndexAAccessories and vehicle modifications .......................... 228
Active bonnet ................................ 65
Active emergency braking ..........192
Adaptive cruise control .......102, 180
AdBlue ................................ 100, 161
Adjustable air vents ...................148
Airbag and belt tensioners ...........97
Airbag deactivation ................57, 97
Airbag label................................... 52
Airbag system .............................. 52
Air conditioning regular operation ................................ 150
Air conditioning system .............. 139
Air intake .................................... 149
Air vents...................................... 148
All-wheel drive ........................... 169
Antilock brake system ................ 169
Antilock brake system (ABS) .......99
Anti-theft alarm system ................29
Anti-theft locking system .............. 28
Appearance care ........................267
Armrest ................................... 47, 49
Armrest storage ........................... 68
Ashtrays ....................................... 85
Automatic anti-dazzle ..................34
Automatic dimming ......................33
Automatic light control ...............126
Automatic locking ........................26Automatic transmission .............164
Autostop ..................................... 156
Auxiliary heater ........................... 148
B Baselevel display ........................103
Battery discharge protection ......137
Battery voltage ........................... 115 Belts.............................................. 50
BlueInjection ............................... 161
Bonnet ....................................... 230
Brake and clutch fluid .................271
Brake and clutch system .............98
Brake assist ............................... 171
Brake fluid .................................. 233
Brakes ............................... 169, 233
Breakdown.................................. 265
Bulb replacement ....................... 236
C Capacities .................................. 284
Catalytic converter .....................160
Central locking system ................22
Centre console lighting ..............136
Centre console storage ...............68
Changing tyre and wheel size ...254
Charging system .......................... 98
Child locks ................................... 27
Child restraint installation locations ................................... 61
Child restraints.............................. 58
295Child restraint systems ................58
Climate control ............................. 15
Clock............................................. 82
Collision damage repair ..............289
Control indicators.......................... 96
Control of the vehicle .................152
Controls ........................................ 78
Convex shape .............................. 32
Coolant and antifreeze ...............271
Cruise control ....................102, 177
Cupholders .................................. 67
Curtain airbag system .................. 56
Curve lighting.............................. 129
D Danger, Warnings and Cautions ...4
Daytime running lights ...............129
Declaration of conformity ............287
DEF ............................................ 161
Diesel exhaust fluid ....................161
Diesel fuel system bleeding .......235
Diesel particle filter ....................159
Door open .................................. 102
Doors ............................................ 27
Driver assistance systems ..........177
Driver Information Centre ...........103
Driving characteristics and towing tips .............................. 224
Driving hints ................................ 152E
Electric adjustment ......................32
Electrical system......................... 243
Electric parking brake ...........98, 170
Electric parking brake fault ...........98
Electronic climate control system 142
Electronic key system ...................20
Electronic Stability Control.......... 173
Electronic Stability Control and Traction Control system ............99
Electronic Stability Control off....... 99
End-of-life vehicle recovery .......229
Engine compartment fuse box ...244
Engine coolant ........................... 232
Engine coolant temperature ......100
Engine coolant temperature gauge ....................................... 95
Engine data ............................... 279
Engine exhaust .......................... 159
Engine identification ...................275
Engine oil ................... 231, 271, 276
Engine oil pressure ....................100
Entry lighting .............................. 136
Event data recorders ..................292
Exit lighting ................................ 136
Exterior care .............................. 267
Exterior light ............................... 101
Exterior lighting ....................12, 125
Exterior mirrors ............................. 32F
First aid ......................................... 74
First aid kit ................................... 74
Fixed air vents ........................... 149
Fog light ..................................... 101
Fog lights ................................... 238
Folding mirrors ............................. 32
Following distance ........................99
Following distance indication ......191
Forward collision alert................. 188
Front airbag system .....................55
Front fog lights ........................... 133
Front pedestrian protection ........195
Front seats.................................... 41
Front storage ................................ 68
Fuel............................................. 220
Fuel consumption - CO 2-
Emissions ............................... 223
Fuel for diesel engines ..............221
Fuel for petrol engines ...............220
Fuel gauge ................................... 94
Funnel......................................... 221
Fuses ......................................... 243
G
Gauges ......................................... 92
Gear shifting ................................. 99
General information ...................224
Glovebox ..................................... 67