Page 193 of 219

Vehicle care191
Wheels and tyresDo not use high-pressure jet
cleaners.
Clean rims with a pH-neutral wheel
cleaner.
Rims are painted and can be treated
with the same agents as the body.
Paintwork damageRectify minor paintwork damage witha touch-up pen before rust forms.
Have more extensive damage or rust
areas repaired by a workshop.
Underbody Some areas of the vehicle underbody
have a PVC undercoating while other critical areas have a durable
protective wax coating.
After the underbody is washed, check
the underbody and have it waxed if
necessary.
Bitumen/rubber materials could
damage the PVC coating. Have
underbody work carried out by a
workshop.Before and after winter, wash the
underbody and have the protective
wax coating checked.
Engine compartment
Areas of the engine compartment that
are painted in the same colour as the vehicle must be looked after like any
other painted surface.
It is advisable to wash the engine
compartment before and after winter
and preserve it with wax. Protect the
alternator and brake fluid reservoir
with plastic sheets before washing
the engine.
When washing the engine with a
steam-jet cleaner, do not direct the
steam jet towards components of the
antilock brake system, air
conditioning system or the belt drive
and its components.
After an engine wash, have all engine
room components preserved
thoroughly by a workshop using
protective wax.
Do not use high-pressure jet
cleaners.Towing equipment
Do not clean the coupling ball bar with
a steam-jet or high-pressure jet
cleaner.
Interior care Interior and upholsteryOnly clean the vehicle interior,
including the instrument panel fascia
and panelling, with a dry cloth or
interior cleaner.
Clean the leather upholstery with
clear water and a soft cloth. In case of
heavy soiling, use leather care.
The instrument cluster and the
displays should only be cleaned using
a soft damp cloth. If necessary use a
weak soap solution.
Clean fabric upholstery with a
vacuum cleaner and brush. Remove
stains with an upholstery cleaner.
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 198 of 219
196Service and maintenance
Ensure brake fluid does not become
contaminated.
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