Page 172 of 219

170Vehicle care
No.Circuit13Fog light14Windscreen wiper15Windscreen wiper16Control module electronics,
Open&Start system, ABS,
brake light switch17Diesel fuel filter heating18Starter19Transmission electronics20Air conditioning system21Engine electronics22Engine electronics23Adaptive forward lighting, head‐
light range adjustment24Fuel pump25Transmission electronics26Engine electronics27Power steeringNo.Circuit28Transmission electronics29Transmission electronics30Engine electronics31Adaptive forward fighting, head‐ light range adjustment32Brake system, air conditioning
system, clutch switch33Adaptive forward lighting, head‐
light range adjustment, light
switch34Steering column control unit35Infotainment system36Mobile telephone, Infotainment
system, displayLoad compartment fuse
box
The fuse box is behind a cover. Press
the locking tabs forward and remove
the cover.
Do not store any objects behind the
cover.
Depending on the equipment, there
are two different fuse boxes.
Fuse box version A
To replace a fuse, remove the
relevant protective cap.
Page 197 of 219

Service and maintenance195
aging control, whereas viscosity
grade gives information on the oil's
thickness over a temperature range.
Dexos is the newest engine oil quality
that provides optimum protection for
gasoline and diesel engines. If it is unavailable, engine oils of other listed qualities have to be used.
Recommendations for gasoline
engines are also valid for
Compressed Natural Gas (CNG),
Liquified Petroleum Gas (LPG) and
Ethanol (E85) fueled engines.
Select the appropriate engine oil
based on its quality and on the
minimum ambient temperature
3 199.
Topping up engine oil
Engine oils of different manufacturers and brands can be mixed as long as
they comply with the required engine oil quality and viscosity.
Use of engine oil with only
ACEA A1/B1 or only A5/B5 quality is
prohibited, since it can cause long-
term engine damage under certain
operating conditions.Select the appropriate engine oil
based on its quality and on the
minimum ambient temperature
3 199.
Additional engine oil additives
The use of additional engine oil
additives could cause damage and
invalidate the warranty.
Engine 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 3 199.
All of the recommended viscosity
grades are suitable for high ambient
temperatures.
Coolant and antifreeze
Use only silicate-free long life coolant
(LLC) antifreeze.The system is factory filled with
coolant designed for excellent
corrosion protection and frost
protection down to approx. -28 °C. In
northern countries with very low
temperatures the factory filled coolant provides frost protection down to
approx. -37 °C. This concentration
should 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.
Brake and clutch fluid Only use high-performance brake
fluid approved for the vehicle, consult
your workshop.
Over time, brake fluid absorbs
moisture which will reduce braking
effectiveness. The brake fluid should therefore be replaced at the specified interval.
Brake fluid should be stored in a
sealed container to avoid water
absorption.
Page 214 of 219

212IndexAAccessories and vehicle modifications .......................... 152
Active head restraints ...................44
Active head restraints on front seats ......................................... 22
Adaptive Forward Lighting ........ .................................... 24, 93, 111
Adjustable air vents ...................123
Airbag and belt tensioners ...........88
Airbag label................................... 57 Airbag system .............................. 57
Air conditioning regular operation ................................ 124
Air conditioning system .............. 118
Air intake .................................... 124
Air vents...................................... 123
Antilock brake system ................ 139
Antilock brake system (ABS) .......89
Anti-theft alarm system ........34, 102
Anti-theft locking system .............. 34
Appearance care ........................189
Apply footbrake ............................ 92
Armrest ........................................ 48
Ashtrays ....................................... 83
Automatic anti-dazzle ..................38
Automatic climate control system .................................... 119
Automatic level control ..............142Automatic light control ...............109
Automatic transmission .............129
Auxiliary heater ........................... 123
B Battery discharge protection ......116
Battery voltage ........................... 101
Board-Info-Display .......................94
Bonnet ....................................... 154
Brake and clutch fluid .................194
Brake and clutch system .............89
Brake assist ............................... 140
Brake fluid .................................. 157
Brake light switch ....................... 101
Brakes ............................... 139, 156
Breakdown.................................. 187
Bulb replacement ....................... 159
C
Capacities .................................. 206
Cargo management system ........72
Car Pass ...................................... 25
Catalytic converter .....................129
Central locking system ................30
Centre console lighting ..............115
Changing tyre and wheel size ...178
Charging system .......................... 88
Check control ............................... 22
Child locks ................................... 33
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