Page 190 of 261

188Vehicle care9Warning
Allow the engine to cool before
opening the cap. Carefully open
the cap, relieving the pressure
slowly.
To top up use a 1:1 mixture of
released coolant concentrate mixed
with clean tap water. If no coolant
concentrate is available, use clean
tap water. Install the cap tightly. Have
the coolant concentration checked
and have the cause of the coolant
loss remedied by a workshop.
Washer fluid
Fill with clean water mixed with a
suitable quantity of windscreen
washer fluid which contains
antifreeze.
Caution
Only washer fluid with a sufficient
antifreeze concentration provides
protection at low temperatures or
a sudden drop in temperature.
Use of washer fluid containing
isopropanol can damage exterior
lamps.
Brakes
In the event of minimum thickness ofthe brake lining, a squealing noise
sounds during braking.
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.
Page 235 of 261

Service and maintenance233
Select the appropriate engine oil
based on its quality and on the
minimum ambient temperature
3 236.
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 3 236.
All of the recommended viscosity
grades are suitable for high ambient
temperatures.Coolant and antifreeze
Use only silicate-free long life coolant (LLC) antifreeze. 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 257 of 261

255
Control indicators.......................... 87
Control of the vehicle .................130
Controls ........................................ 75
Convex shape .............................. 28
Coolant and antifreeze ...............232
Corner lighting ............................ 113
Cruise control ...................... 94, 150
Cupholders .................................. 56
Curtain airbag system .................. 47
D Danger, Warnings and Cautions ...4
Daytime running lights ...............112
Declaration of conformity ............251
Diesel fuel system bleeding .......191
Diesel particle filter ...............93, 136
Door open .................................... 95
Doors ............................................ 25
Driver assistance systems ..........150
Driver Information Centre .............95
Driving characteristics and towing tips .............................. 177
Driving hints ................................ 130
E Easy entry..................................... 37
Electric adjustment ......................28
Electrical system......................... 200
Electronic climate control system 123Electronic driving programmes .
........................................ 140, 144
Electronic Stability Control.......... 148
Electronic Stability Control and Traction Control system ............92
Electronic Stability Control off....... 92 End-of-life vehicle recovery .......184
Engine compartment fuse box ...201
Engine coolant ........................... 187
Engine coolant temperature gauge ....................................... 85
Engine data ............................... 239
Engine exhaust .......................... 136
Engine identification ...................235
Engine oil ................... 185, 232, 236
Engine oil pressure ......................93
Entry lighting .............................. 118
Event data recorders ..................252
Exit lighting ................................ 118
Exterior care .............................. 227
Exterior light ................................. 94
Exterior lighting ....................12, 110
Exterior mirrors ............................. 28
F
Fault ................................... 140, 145
First aid ......................................... 72
First aid kit ................................... 72
Fixed air vents ........................... 128
Flex-Fix system ............................ 58Fog light ....................................... 94
Fog lights ................................... 195
Folding mirrors ............................. 28
Following distance indication ......155
Forward collision alert................. 153
Front airbag system .....................45
Front fog lights ........................... 115
Front seats.................................... 35
Front storage ................................ 57
Front turn signal lights ...............195
Fuel............................................. 171
Fuel consumption - CO 2-
Emissions ............................... 177
Fuel for diesel engines ..............171
Fuel for liquid gas operation .......172
Fuel for petrol engines ...............171
Fuel gauge ................................... 84
Fuel selector ................................ 85
Fuses ......................................... 200
G Gauges ......................................... 83
Gear shifting ................................. 91
General information ...................177
Glovebox ..................................... 56
Graphic-Info-Display ...................102
H Halogen headlights ....................191
Hand brake ......................... 145, 146