158Driving and operatingmaintained. Control indicator m in
instrument cluster illuminates green.
Accelerator pedal can be released.
Vehicle speed can be increased by depressing the accelerator pedal.
When the accelerator pedal is
released, the previously stored speed
is resumed.
Cruise control remains activated
while gearshifting.
Increase speed With cruise control active, hold thumb
wheel turned to RES/+ or briefly turn
to RES/+ repeatedly: speed
increases continuously or in small
increments.
Alternatively, accelerate to the
desired speed and store by turning to SET/- .
Reduce speed
With cruise control active, hold thumb
wheel turned to SET/- or briefly turn to
SET/- repeatedly: speed decreases
continuously or in small increments.
Deactivation
Press y; control indicator m in
instrument cluster illuminates white.
Cruise control is deactivated. Last
stored speed remains in memory for
later speed resume.
Automatic deactivation:
● Vehicle speed is below approx. 20 mph.
● Vehicle speed is above approx. 125 mph.
● The brake pedal is depressed.
● The clutch pedal is depressed for
a few seconds.
● Selector lever is in N.
● Engine speed is in a very low range.
● The Traction Control system (TC)
or Electronic Stability Control
(ESC) is operating.
Resume stored speed Turn thumb wheel to RES/+ at a
speed above 20 mph. The stored speed will be obtained.
Switching off
Press m; control indicator m in
instrument cluster extinguishes. The
stored speed is deleted.
Driving and operating163
The selected following distance is
indicated by filled distance bars in the
adaptive cruise control page.
Note that the following distance
setting is shared with the sensitivity
setting of forward collision alert.
Example: If setting 3 (far) is selected,
then the driver is warned sooner
before a possible collision, also if
adaptive cruise control is inactive or
switched off.
9 Warning
The driver accepts full
responsibility for the appropriate
following distance based on traffic, weather and visibility conditions.
Following distance must be
adjusted or the system switched
off when required by the prevailing
conditions.
Detecting the vehicle ahead
The green illuminated vehicle ahead
control indicator A is displayed in the
speedometer when the system
detects a vehicle in the driving path.
If this symbol does not display, or
displays briefly, adaptive cruise
control will not respond to vehicles
ahead.
Deactivation Adaptive cruise control is deactivatedby the driver when:
● y is pressed.
● The brake pedal is depressed.
● The clutch pedal is depressed for
more than four seconds.
● The gear selector lever of automatic transmission is moved
to N.
The system is also automatically
deactivated when:
● Vehicle speed slows down below
28 mph or accelerates above
120 mph.
● The Traction Control system (TC)
is operating for more than
20 seconds.
● The Electronic Stability Control (ESC) is operating.
164Driving and operating● There is no traffic and nothingdetected on the road sides forseveral minutes. In this case,
there are no radar echoes and
the sensor may report that it is
blocked.
● The collision imminent braking system is applying the brakes.
● The radar sensor is blocked by an ice or water film.
● A fault is detected in the radar, engine or brake system.
When adaptive cruise control is
deactivated automatically, the control indicator m illuminates white and a
warning symbol is displayed as a pop-
up in the Driver Information Centre.
The stored speed is maintained.
9 Warning
When adaptive cruise control is
deactivated, the driver must take
over full brake and engine control.
Switching off
Press C to switch off adaptive cruise
control. The control indicator m
extinguishes. The stored speed is
deleted.
Switching off the ignition also
switches off adaptive cruise control
and deletes the stored speed.
Driver's attention
● Use adaptive cruise control carefully on bends or mountain
roads, as it can lose the vehicle
ahead and need time to detect it
again.
● Do not use the system on slippery roads as it can create
rapid changes in tyre traction
(wheel spinning), so that you
could lose control.
● Do not use adaptive cruise control during rain, snow or
heavy dirt, as the radar sensor
can be covered by a water film,
dust, ice or snow. This reduces or suppresses completely the
visibility. In case of sensor
blockage, clean the sensor
cover.
System limits ● The system's automatic brake force does not permit hard
braking and the braking level
may not be sufficient to avoid a
collision.
287Climate control ............................. 15
Climate control systems .............127
Clock............................................. 76
Code ............................................. 97
Collision damage repair ..............281
Control indicators.......................... 82
Control of the vehicle .................138
Controls ........................................ 72
Convex shape .............................. 30
Coolant and antifreeze ...............253
Cruise control ...................... 90, 157
Cupholders .................................. 59
Curtain airbag system .................. 51
Curve lighting.............................. 118
D Danger, Warnings and Cautions ...4
Daytime running lights ...............118
Declaration of conformity ............278
Diesel fuel system bleeding .......206
Diesel particle filter ...............88, 143
Door open .................................... 91
Doors ............................................ 25
Driver assistance systems ..........157
Driver Information Centre .............91
Driving characteristics and towing tips .............................. 193
Driving hints ................................ 138E
Electric adjustment ......................30
Electrical system......................... 221
Electric parking brake ...........86, 150
Electric parking brake fault ...........87
Electronic climate control system 130
Electronic driving programmes ..147
Electronic Stability Control.......... 153
Electronic Stability Control and Traction Control system ............88
Electronic Stability Control off ...... 88
End-of-life vehicle recovery .......200
Engine compartment fuse box ...222
Engine coolant ........................... 202
Engine coolant temperature gauge ....................................... 80
Engine data ............................... 260
Engine exhaust .......................... 143
Engine identification ...................256
Engine oil ................... 201, 253, 257
Engine oil pressure ......................89
Entry lighting .............................. 125
ERA GLONASS .......................... 111
Event data recorders ..................283
Exit lighting ................................ 125
Exterior care .............................. 248
Exterior light ................................. 90
Exterior lighting ....................13, 114
Exterior mirrors ............................. 30F
Fault ........................................... 147
First aid ......................................... 68
First aid kit ................................... 68
Fixed air vents ........................... 135
Fog light ....................................... 90
Fog lights ................................... 211
Folding mirrors ............................. 30
Following distance indication ......170
Forward collision alert................. 167
Front airbag system .....................49
Front fog lights ........................... 122
Front seats.................................... 39
Front storage ................................ 60
Front turn signal lights ...............213
Fuel............................................. 186
Fuel consumption - CO 2-
Emissions ............................... 192
Fuel for diesel engines ..............186
Fuel for liquid gas operation .......187
Fuel for petrol engines ...............186
Fuel gauge ................................... 80
Fuel selector ................................ 80
Fuses ......................................... 221
G Gauges ......................................... 79
General information ...................193
Glass panel .................................. 36
290Traction Control system ............. 152
Traction Control system off .......... 88
Traffic sign assistant ...................181
Trailer coupling ........................... 193
Trailer stability assist .................197
Trailer towing ............................. 193
Transmission ............................... 17
Transmission display .................145
Tread depth ............................... 233
Trip computer ............................ 101
Trip odometer .............................. 79
Turn and lane-change signals ...121
Turn signal ................................... 85
Tyre chains ................................ 234
Tyre designations ......................228
Tyre pressure ............................ 228
Tyre pressure monitoring system ............................... 89, 230
Tyre pressures ........................... 269
Tyre repair kit ............................. 234
U Ultrasonic parking assist ...... 88, 173
Underseat storage .......................61
Upholstery .................................. 251
Uplevel-Combi-Display .................91
Upshift .......................................... 87
Using this manual ..........................3V
Vehicle battery ........................... 204
Vehicle checks............................ 200
Vehicle data ................................ 257
Vehicle data recording and privacy ..................................... 283
Vehicle detected ahead ................91
Vehicle dimensions .................... 267 Vehicle Identification Number ....255
Vehicle jack ................................ 226
Vehicle messages .......................97
Vehicle personalisation .............103
Vehicle security ............................ 27
Vehicle specific data ......................3
Vehicle storage ........................... 199
Vehicle tools ............................... 226
Vehicle unlocking ........................... 6 Vehicle weight ........................... 265
Ventilation ................................... 127
W
Warning chimes .........................100
Warning lights ............................... 79
Warning triangle .......................... 68
Washer and wiper systems .........16
Washer fluid ............................... 203
Wheel changing .........................237
Wheel covers ............................. 234
Wheels and tyres .......................228
Windows ....................................... 32Windscreen................................... 32
Windscreen wiper/washer ...........73
Winter tyres ............................... 228
Wiper blade replacement ..........206