Page 220 of 321

218Vehicle care
General9Warning
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. For the correct mixing ratio refer to the washer fluid container.
Caution
Only washer fluid with a sufficient
antifreeze concentration provides
protection at low temperatures or
a sudden drop in temperature.
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 265 of 321

Service and maintenance263
Select the appropriate engine oil
based on its quality and on the
minimum ambient temperature
3 266.
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 3 266.
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.
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 a 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.
Ensure brake fluid does not become
contaminated.
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315
Child restraint installationlocations ................................... 63
Child restraints.............................. 62
Child restraint systems ................62
Cigarette lighter ........................... 89
Climate control ............................. 16
Climate control systems .............134
Clock............................................. 87
Colour-Info-Display .....................114
Control indicators........................ 100
Control of the vehicle .................148
Controls ........................................ 82
Convex shape .............................. 36
Coolant and antifreeze ...............262
Cruise control ....................106, 171
Cupholders .................................. 67
Curtain airbag system .................. 60
Curve lighting.............................. 125
D Danger, Warnings and Cautions ...4
Daytime running lights ...............125
Declaration of conformity ............312
Diesel fuel system bleeding .......221
Diesel particle filter .............104, 156
Door open .................................. 107
Doors ............................................ 29
Driver assistance systems ..........171
Driver Information Centre ...........107Driving characteristics and
towing tips .............................. 209
Driving hints ................................ 148
Dual automatic climate control system ..................................... 140
E Electric adjustment ......................36
Electrical system......................... 232
Electric parking brake .................102
Electric parking brake fault .........102
Electronic driving programmes ..160
Electronic key system ...................22
Electronic Stability Control.......... 167
Electronic Stability Control and Traction Control system ..........104
Electronic Stability Control off..... 104
End-of-life vehicle recovery .......214
Engine compartment fuse box ...234
Engine coolant ........................... 217
Engine coolant temperature gauge ....................................... 98
Engine data ............................... 269
Engine exhaust .......................... 156
Engine identification ...................265
Engine oil ................... 215, 262, 266
Engine oil pressure ....................105
Entry lighting .............................. 131
Event data recorders ..................312
Exit lighting ................................ 132Exterior care .............................. 257
Exterior light ............................... 105
Exterior lighting ....................13, 122
Exterior mirrors ............................. 36
F
Fault ........................................... 160
First aid ......................................... 79
First aid kit ................................... 79
Fixed air vents ........................... 146
Fog light ..................................... 106
Fog lights ................................... 227
Folding mirrors ............................. 37
Following distance ......................103
Following distance indication ......184
Forward collision alert................. 181
Front airbag system .....................58
Front fog lights ........................... 128
Front seats.................................... 47
Front storage ................................ 68
Front turn signal light ..................222
Fuel............................................. 202
Fuel consumption - CO 2-
Emissions ............................... 208
Fuel for diesel engines ..............203
Fuel for liquid gas operation .......203
Fuel for petrol engines ...............202
Fuel gauge ................................... 97
Fuel selector ................................ 98
Fuses ......................................... 232