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176Vehicle careVehicle checks
Performing work9 Warning
Only perform engine compartment
checks when the ignition is off.
The cooling fan may start
operating even if the ignition is off.
9 Danger
The ignition system uses
extremely high voltage. Do not
touch.
Bonnet
Opening
Open the driver's door.
Pull the release lever and return it to
its original position.
Move the safety catch sideways to the
left vehicle side and open the bonnet.
The bonnet is held open
automatically.
If the bonnet is opened during an
Autostop, the engine will be restarted automatically for safety reasons.
Stop-start system  3 131.
Closing Lower the bonnet and let it fall into the
latch from a low height (20-25 cm).
Check that the bonnet is engaged. 
     
        
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Vehicle care177Caution
Do not press the bonnet into the
latch to avoid dents.
Engine oil
Check the engine oil level manually
on a regular basis to prevent damage
to the engine. Ensure that the correct
specification of oil is used.
Recommended fluids and lubricants
3  215.
The maximum engine oil
consumption is 0.6 l per 1000 km.
Check with the vehicle on a level
surface. The engine must be at
operating temperature and switched
off for at least five minutes.
Caution
It is the owner's responsibility to
maintain the proper level of an
appropriate quality oil in the
engine.
Pull out the dipstick, wipe it clean,
insert it to the stop on the handle, pull
out and read the engine oil level.
Insert dipstick to the stop on the
handle and make half a turn.
When the engine oil level has
dropped to the  MIN mark, top up
engine oil.
Different dipsticks are used
depending on engine variant.
We recommend the use of the same
grade of engine oil that was used at
last change. 
     
        
        Page 212 of 245

210Vehicle careIf 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.
Wax painted parts of the vehicle
regularly.
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.
Do not clean the engine compartmentwith a steam-jet or high-pressure jet
cleaner.
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.
Have the door hinges of all doors
greased by a workshop.
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.
Polishing is necessary only if the paint
has become dull or if solid deposits
have become attached to it.
Paintwork polish with silicone forms a
protective film, making waxing
unnecessary.Plastic body parts must not be treated with wax or polishing agents.
Windows and windscreen wiper
blades
Use a soft lint-free cloth or chamois
leather together with window cleaner
and insect remover.
When cleaning the rear window from
inside, always wipe in parallel to the
heating element to prevent damage.
For mechanical removal of ice, use a
sharp-edged ice scraper. Press the
scraper firmly against the glass so
that no dirt can get under it and
scratch the glass.
Clean smearing wiper blades with a
soft cloth and window cleaner.
Remove dirt residues from smearing
wiper blades by using a soft cloth and window cleaner. Also make sure to
remove any residues such as wax,
insect residues and similar from the
window.
Ice residues, pollution and continuous
wiping on dry windows will damage or
even destroy the wiper blades. 
     
        
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238IndexAAccessories and vehicle modifications  .......................... 174
Adaptive forward lighting  ...........108
AdBlue .................................. 89, 136
Adjustable air vents  ...................123
Advanced parking assist ............153
Airbag and belt tensioners  ...........86
Airbag deactivation  ................55, 87
Airbag label................................... 51 Airbag system  .............................. 51
Air conditioning regular operation  ................................ 125
Air conditioning system .............. 115
Air intake .................................... 124
Air vents...................................... 123
Antilock brake system ................ 143
Antilock brake system (ABS)  .......88
Anti-theft alarm system  ................32
Anti-theft locking system .............. 31
Appearance care ........................209
Armrest ................................... 46, 47
Ashtrays ....................................... 78
Automatic anti-dazzle  ..................36
Automatic light control  ...............107
Automatic locking  ........................28
Automatic transmission  .............139
Autostop ............................... 90, 131
Auxiliary heater ........................... 122B
Battery discharge protection  ......113
Battery voltage ............................. 98
Belts.............................................. 48
BlueInjection ............................... 136
Bonnet  ....................................... 176
Brake and clutch fluid .................215
Brake and clutch system  .............88
Brake assist  ............................... 144
Brake fluid .................................. 179
Brakes  ............................... 143, 179
Breakdown.................................. 207
Bulb replacement ....................... 182
C Capacities  .................................. 227
Catalytic converter  .....................136
Central locking system  ................24
Centre console lighting  ..............113
Centre console storage  ...............64
Changing tyre and wheel size  ...198
Charging system .......................... 87
Child locks  ................................... 29
Child restraint installation locations  ................................... 60
Child restraints.............................. 57
Child restraint systems  ................57
Climate control ............................. 15
Climate control systems .............114
Clock............................................. 77