Page 256 of 341
254Vehicle careNo.Circuit1Engine control module2Lambda sensor3Fuel injection/Ignition system4Fuel injection/Ignition system5–6Mirror heating/Anti-theft alarm
system7Fan control/Engine control
module/Transmission control
module8Lambda sensor/Engine cooling9Rear window sensor10Vehicle battery sensor11Trunk release12Adaptive forward lighting/Auto‐
matic light control13ABS14Rear window wiper15Engine control moduleNo.Circuit16Starter17Transmission control module18Heated rear window19Front power windows20Rear power windows21Rear electrical centre22Left high beam (Halogen)23Headlamp washer system24Right low beam (Xenon)25Left low beam (Xenon)26Front fog lights27Diesel fuel heating28Start stop system29Electric parking brake30ABS31Adaptive cruise control32Airbag
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282Vehicle careAppearance careExterior care
Locks The locks are lubricated at the factoryusing a high quality lock cylinder
grease. Use de-icing agent only when
absolutely necessary, as this has a
degreasing effect and impairs lock function. After using a de-icing agent, have the locks regreased by a
workshop.
Washing The paintwork of your vehicle is
exposed to environmental influences. Wash and wax your vehicle regularly.
When using automatic vehicle
washes, select a programme that
includes waxing.
Bird droppings, dead insects, resin,
pollen and the like should be cleaned
off immediately, as they contain
aggressive constituents which can
cause paint damage.If using a vehicle wash, comply with
the vehicle wash manufacturer's
instructions. The windscreen wiper and rear window wiper must be
switched off. Remove antenna and
external accessories such as roof
racks etc.
If you wash your vehicle by hand,
make sure that the insides of the
wheel housings are also thoroughly
rinsed out.
Clean edges and folds on opened
doors and the bonnet as well as the
areas they cover.
Clean bright metal mouldings with a
cleaning solution approved for
aluminium to avoid damages.Caution
Always use a cleaning agent with
a pH value of four to nine.
Do not use cleaning agents on hot surfaces.
Have the door hinges of all doors
greased by a workshop.
Do not clean the engine compartment with a steam-jet or high-pressure jet
cleaner.
On vehicles with emblem touchpad:
when cleaning with a high-pressure
jet cleaner ensure a minimum
distance of 30 cm when working
around the tailgate to prevent
unintended unlocking.
Thoroughly rinse and leather-off the
vehicle. Rinse leather frequently. Use
separate leathers for painted and
glass surfaces: remnants of wax on
the windows will impair vision.
Exterior lights
Headlight and other light covers are
made of plastic. Do not use any
abrasive or caustic agents, do not use
an ice scraper, and do not clean them
dry.
Polishing and waxing
Wax the vehicle regularly (at the
latest when water no longer beads).
Otherwise, the paintwork will dry out.
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Service and maintenance287Select the appropriate engine oil
based on its quality and on the
minimum ambient temperature
3 290.
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 3 290.
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
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
Over time, brake fluid absorbs
moisture which will reduce braking
effectiveness. The brake fluid should
therefore be replaced at the specified interval.
Page 336 of 341

334IndexAAccessories and vehicle modifications .......................... 226
Active Emergency Braking .........196
Active head restraints ..................38
Adaptive cruise control .......117, 186
Adaptive forward lighting ..117,
144, 237
Adjustable air vents ...................161
Airbag and belt tensioners .........112
Airbag deactivation ..............51, 112
Airbag system .............................. 49
Air conditioning regular operation ................................ 162
Air conditioning system .............. 154
Air intake .................................... 161
Air vents...................................... 161
Antilock brake system ................ 175
Antilock brake system (ABS) .....114
Anti-theft alarm system ................28
Anti-theft locking system .............. 27
Appearance care ........................282
Armrest .................................. 45, 46
Armrest storage ........................... 61
Ashtrays ..................................... 105
Automatic anti-dazzle ..................32
Automatic light control ...............141
Automatic locking ........................24
Automatic transmission .............171
Auxiliary heater ........................... 160B
Battery discharge protection ......152
Battery voltage ........................... 127
Belts.............................................. 46
Bicycle rack .................................. 63
Bonnet ....................................... 227
Brake and clutch fluid .................286
Brake and clutch system ...........113
Brake assist ............................... 178
Brake fluid .................................. 231
Brakes ............................... 175, 231
Breakdown.................................. 280
Bulb replacement ....................... 234
C Capacities .................................. 305
Cargo management system ........89
Car Pass ...................................... 21
Catalytic converter .....................170
Central locking system ................23
Centre console lighting ..............151
Centre console storage ...............62
Changing tyre and wheel size ...266
Charging system ........................ 113
Child locks ................................... 25
Child restraint installation locations ................................... 55
Child restraints.............................. 53
Child restraint systems ................53
Cigarette lighter .........................105