Page 184 of 303

182Driving and operatingExample: 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 to drive with the
appropriate following distance
based on traffic, weather, visibility
and regional regulation. Followingdistance 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 when
the system detects a vehicle in the
driving path. The range of the sensors
is between 25 and 150 m depending
on vehicle speed.
Forward collision alert 3 186.
If this symbol does not display, or
displays briefly, adaptive cruise
control will not respond to vehicles
ahead.
Deactivation of the functionality
Adaptive cruise control is deactivated by the driver when:
● y is pressed.
● Brake pedal is applied.
● Clutch pedal is depressed for more than four seconds.
● Selector lever of automatic transmission is moved to N.
The system is also automatically
deactivated when:
● Vehicle speed accelerates above
120 mph or slows down below
15 mph. Vehicles with automatic
transmission slows down to a stop without deactivating within
5 minutes.● The Traction Control system is deactivated or operating.
● The Electronic Stability Control is
deactivated or operating.
● There is no traffic and nothing detected on the road sides for
approx. 1 minute. In this case
there are no radar echoes and
the sensor may report that it is
blocked.
● The active emergency braking system is applying the brakes.
● Driving on steep inclines.
● The radar sensor is blocked by an ice or water film.
● A fault is detected in the radar, camera, engine or brake system.
● The brakes need to cool down.
Additionally, the system is
automatically deactivated on vehicles with automatic transmission (full
speed range adaptive cruise control)
when:
● The incline uphill or downhill is greater than 20%.
● The electric parking brake is applied.
Page 228 of 303
226Vehicle carethe coolant concentration checked
and have the cause of the coolant
loss remedied by a workshop.
Washer fluid
Fill with clean water mixed with a
suitable quantity of approved
windscreen washer fluid which
contains antifreeze.
Caution
Only washer fluid with a sufficient
antifreeze concentration provides
protection at low temperatures or
a sudden drop in temperature.
Washer fluid 3 271.
Brakes In the event of minimum thickness of
the brake lining, a squealing noise
sounds during braking.
Continued driving is possible but
have the brake lining replaced as
soon as possible.
Once new brake linings are installed,
do not brake unnecessarily hard for
the first few journeys.
Brake fluid9 Warning
Brake fluid is poisonous and
corrosive. Avoid contact with eyes, skin, fabrics and painted surfaces.
The brake fluid level must be betweenthe MIN and MAX marks.
If fluid level is below MIN seek the
assistance of a workshop.
Brake and clutch fluid 3 271.
Page 274 of 303

272Service and maintenanceEngine oil viscosity grades
The SAE viscosity grade gives
information of the thickness of the oil.
Multigrade oil is indicated by two
figures, e.g. SAE 5W-30. The first
figure, followed by a W, indicates the
low temperature viscosity and the
second figure the high temperature viscosity.
Select the appropriate viscosity grade
depending on the minimum ambient
temperature 3 275.
All of the recommended viscosity
grades are suitable for high ambient
temperatures.
Coolant and antifreeze
Use only organic acid type-long life
coolant (LLC) antifreeze approved for
the vehicle. Consult a workshop.
The system is factory filled with
coolant designed for excellent
corrosion protection and frost
protection down to approx. -28 °C. In
cold regions with very low
temperatures the factory filled coolant provides frost protection down to
approx. -37 °C. This concentrationshould be maintained all year round.
The use of additional coolant
additives that intend to give additional
corrosion protection or seal against
minor leaks can cause function
problems. Liability for consequences
resulting from the use of additional coolant additives will be rejected.
Washer fluid
Use only washer fluid approved for
the vehicle to prevent damage of
wiper blades, paintwork, plastic and
rubber parts. Consult a workshop.
Brake and clutch fluidOver time, brake fluid absorbs
moisture which will reduce braking
effectiveness. The brake fluid should
therefore be replaced at the specified
interval.
Page 298 of 303

296IndexAAccessories and vehicle modifications .......................... 221
Active emergency braking ..........189
Adaptive cruise control .......113, 178
AdBlue ................................ 111, 162
Adjustable air vents ...................148
Airbag and belt tensioners .........108
Airbag deactivation ..............64, 108
Airbag label................................... 59
Airbag system .............................. 59
Air conditioning regular operation ................................ 149
Air conditioning system .............. 140
Air intake .................................... 149
Air vents...................................... 148
Antilock brake system ................ 169
Antilock brake system (ABS) .....110
Anti-theft alarm system ................36
Anti-theft locking system .............. 36
Appearance care ........................266
Armrest ................................... 54, 56
Armrest storage ........................... 73
Ashtrays ..................................... 100
Automatic anti-dazzle ..................41
Automatic light control ...............130
Automatic locking ........................29
Automatic transmission .............165
Autostop ..................................... 156
Auxiliary heater ........................... 148B
Baselevel display ........................114
Battery discharge protection ......139
Battery voltage ........................... 122
Belts.............................................. 57
BlueInjection ............................... 162
Bonnet ....................................... 223
Brake and clutch fluid .................271
Brake and clutch system ...........109
Brake assist ............................... 172
Brake fluid .................................. 226 Brakes ............................... 169, 226
Breakdown.................................. 264
Bulb replacement ....................... 229
C Capacities .................................. 282
Cargo management system ........83
Catalytic converter .....................162
Central locking system ................24
Centre console lighting ..............138
Changing tyre and wheel size ...253
Charging system ........................ 109
Child locks ................................... 30
Child restraint installation locations ................................... 68
Child restraints.............................. 66
Child restraint systems ................66
Climate control ............................. 15
Clock............................................. 96
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