Page 152 of 231

150Vehicle careBrakesA squealing noise indicates that the
brake lining is at its minimum
thickness. 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 the MAX marks.
If fluid level is below MIN seek the
assistance of a workshop.
Brake and clutch fluid 3 195.
Vehicle battery Vehicles without stop-start system
will be equipped with a lead acid
battery. Vehicles with stop-start
system will be equipped with an
AGM battery which is not a lead acid
battery.
The vehicle battery is maintenance-
free provided that the driving profile
allows sufficient charging of the
battery. Short-distance-driving and
frequent engine starts can discharge
the battery. Avoid the use of
unnecessary electrical consumers.
Batteries do not belong in household
waste. They must be disposed of at
an appropriate recycling collection
point.
Laying up the vehicle for more than
4 weeks can lead to battery
discharge. Disconnect the clamp from the negative terminal of the vehicle
battery.
Ensure the ignition is switched off
before connecting or disconnecting
the vehicle battery.
Page 198 of 231

196Service and maintenance
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) fuelled 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 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 226 of 231

224IndexAAccessories and vehicle modifications .......................... 145
Active head restraints ..................35
Adaptive forward lighting ..........
.................................. 85, 100, 156
Adjustable air vents ...................112
Airbag and belt tensioners ...........80
Airbag deactivation ................46, 80
Airbag label................................... 41 Airbag system .............................. 41
Air conditioning regular operation ................................ 113
Air conditioning system .............. 107
Air intake .................................... 113
Air vents...................................... 112
Antilock brake system ................ 128
Antilock brake system (ABS) .......82
Anti-theft alarm system ................25
Anti-theft locking system .............. 25
Appearance care ........................191
Apply footbrake ............................ 84 Ashtrays ....................................... 75
Automatic anti-dazzle ..................29
Automatic light control .................98
Automatic locking ........................24
Automatic transmission .............120
Auxiliary heater ........................... 112B
Battery discharge protection ......105
Battery voltage ............................. 90
Bicycle rack .................................. 54
Bonnet ....................................... 147
Brake and clutch fluid .................195
Brake and clutch system .............81
Brake assist ............................... 130
Brake fluid .................................. 150
Brake light switch ......................... 90
Brakes ............................... 128, 150
Breakdown.................................. 189
Bulb replacement ....................... 153
C Capacities .................................. 216
Car Pass ...................................... 19
Catalytic converter .....................120
Central locking system ................21
Centre console lighting ..............105
Changing tyre and wheel size ...176
Charging system .......................... 80
Child locks ................................... 24
Child restraint installation locations ................................... 49
Child restraints.............................. 48
Child restraint systems ................48
Cigarette lighter ........................... 75
Climate control ............................. 15
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