
Inspecting and Replenishing
190
Caution
•Other coolant additives may cause operational problems which, in partic-
ular, involves significantly reducing the anticorrosion effect.
•Any faults or problems resulting from corrosion may cause a loss of
coolant and, as a consequence of th is, result in major engine damage.
Inspecting the coolant level
The coolant expansion bottle is located in the engine compartment on
the left.
– Switch the engine off.
– Open the bonnet ⇒ in “Working in the engine compartment” on
page 185.
– Check the level of coolant in the coolant expansion bottle ⇒fig. 176 .
The coolant level when the engine is cold must lie between the “MIN”
and “MAX” markings. The level may also rise slightly above the “MAX”
marking when the engine is warm.
If the coolant level in the reservoir is too low, this is indicated by the warning light
in the instrument cluster ⇒ page 22. We nevertheless recommend inspecting
the coolant level directly at th e reservoir from time to time. Loss of coolant
A loss of coolant is first and foremost an
indication of a leak in the system. You
should not merely top up the coolant in the reservoir. It is also important to have
the cooling system inspected without delay by a specialist garage.
Losses can only occur through the pressure relief in the cap of the coolant expan-
sion bottle which is completely free of leaks if the coolant boils as a result of over-
heating and is forced out of the cooling system.
WARNING
Read and observe the warning notes ⇒page 185, “Working in the engine
compartment” before working in the engine compartment.
Caution
One should contact a specialist garage as soon as possible if the source of over-
heating itself cannot be determined and removed, since there may be grave
damage to the engine.
Replenishing the coolant
– Switch the engine off.
– Allow the engine to cool down.
– Place a cloth over the cap of the coolant expansion reservoir ⇒fig. 176 and unscrew the cap carefully by turning it to the left
⇒ .
– Top up the coolant.
– Screw the cap tight until it is heard to lock.
The coolant which you use for replenishing the system, must comply with one
specific specification ⇒page 189, “Coolant”. Do not use an alternative additive if
the coolant additive G12 PLUS is not available in exceptional cases. Just top up the
B1Z-0042HB1Z-0042H
Fig. 176 Engine
compartment: Coolant
expansion bottle
NKO B5 20.book Page 190 Friday, March 2, 2007 1:46 PM

Breakdown assistance
210
WARNING
•If you find yourself in flowing traffic switch on the hazard warning lights
system and place the warning triangle on the side of the road at the
prescribed distance from your vehicl e while observing all national legal
provisions. In this way you are protecting not only yourself but also other
road users.
•Never start the engine with the vehicle sitting on the raised jack - danger
of suffering injury!
Caution
If you have to change a wheel on a slope first block the opposite wheel with a stone
or similar object in order to secure th e vehicle from unexpectedly rolling away.
Note
Comply with the national legal regulations.
Changing a wheel
Always change a wheel on a level surface as far as possible.
– Take off the full wheel trim* ⇒page 211 or the caps ⇒page 211.
– In the case of light alloy wheels remove the wheel trim cap ⇒page 211.
– Slacken the wheel bolts ⇒page 212.
– Jack up the vehicle until the wheel to be changed is clear of the ground
⇒ page 213.
– Unscrew the wheel bolts and place them on a clean surface (cloth, paper etc.).
– Take off the wheel. – Fit on the spare wheel and tighten the wheel bolts slightly.
– Lower the car.
– Tighten the wheel bolts firmly, al
ternately and diagonally using the
wheel wrench ⇒page 212.
– Mount the full wheel trim/w heel trim cap or the caps.
Note
•All bolts must be clean and must turn easily.
•You must never grease or oil the wheel bolts!
•When fitting on unidirectional tyres, ensure that the tyres rotate in the correct
direction ⇒page 199.
Subsequent steps
After changing the wheel, you must perform the following steps.
– Stow and attach the replaced wheel in the spare wheel well.
– Stow the vehicle tool kit in the space provided.
– Check the tyre pressure on the spare wheel just mounted as soon as
possible.
– Have the tightening torque of the wheel bolts checked with a torque
wrench as soon as possible. The tightening torque for steel and light
alloy wheels must be 120 Nm.
– Have the defective tyre repaired as soon as possible.
WARNING
It is necessary to observe the guidelines given on ⇒page 201, “New tyres
and wheels” if the vehicle is subseq uently fitted with tyres which are
different to those it was fitted with at the works.
NKO B5 20.book Page 210 Friday, March 2, 2007 1:46 PM

Index
250
CargoFlex folding box . . . . . . . . . . . . . . . . . . . . . . . . . 75
Catalytic converter . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
CD changer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Central locking system . . . . . . . . . . . . . . . . . . . . . . . . 33
lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
unlock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Changing Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Changing a wheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209
Changing bulbs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222
Changing oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Changing wheels around . . . . . . . . . . . . . . . . . . . . . 201
Charging the battery . . . . . . . . . . . . . . . . . . . . . . . . . 195 Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Check engine oil level . . . . . . . . . . . . . . . . . . . . . . . . 187
Child safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146 Side airbag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
Child safety lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Child safety seat on the front passenger seat . . . . . . . . . . . . . . . 147
Safety information . . . . . . . . . . . . . . . . . . . . . . . 146
Use of child safety seats . . . . . . . . . . . . . . . . . . 149
Child seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149 Child seat protection . . . . . . . . . . . . . . . . . . . . . 152
Classification into groups . . . . . . . . . . . . . . . . . 149
ISOFIX system . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
Children and safety . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Chrome parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
Cigarette lighter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173 Climatronic
Air outlet vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Blower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Defrosting windows . . . . . . . . . . . . . . . . . . . . . . . . 94
economic use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Keeping windows demisted . . . . . . . . . . . . . . . . 95
Operational faults . . . . . . . . . . . . . . . . . . . . . . . . . 94
Recirculated air mode . . . . . . . . . . . . . . . . . . . . . . 96
Setting temperature . . . . . . . . . . . . . . . . . . . . . . . . 96
Climatronic (automatic air co nditioning) . . . . . . . . 93
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Clothes hooks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Cockpit General view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Coming Home . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Compartments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Computer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Convenience operation . . . . . . . . . . . . . . . . . . . . . . . . 42
Converting/masking over headlights . . . . . . . . . . 168
Cool box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189 replenishing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Coolant level Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Coolant quantity Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Coolant temperature gauge . . . . . . . . . . . . . . . . . . . . 12
Coolant temperatur e/coolant level
Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Cooling
Air conditioning system . . . . . . . . . . . . . . . . . . . . 89
Climatronic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Correct seated position . . . . . . . . . . . . . . . . . . . . . . . 127
Counter for distance driven . . . . . . . . . . . . . . . . . . . . 13
Cruise control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Cruise control system . . . . . . . . . . . . . . . . . . . . . . . . 106
Cup holder front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
D
Deactivatingan airbag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
Deactivating an airbag . . . . . . . . . . . . . . . . . . . . . . . . 144
Defrosting rear window . . . . . . . . . . . . . . . . . . . . . . . 52
Defrosting windows Air conditioning system . . . . . . . . . . . . . . . . . . . . 90
Defrosting windscreen . . . . . . . . . . . . . . . . . . . . . . . . 52
De-icing the windows . . . . . . . . . . . . . . . . . . . . . . . . 176
Detachable towing device . . . . . . . . . . . . . . . . . . . . 171
Diesel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
Diesel engines Starting the engine . . . . . . . . . . . . . . . . . . . . . . . 101
Diesel particle filter . . . . . . . . . . . . . . . . . . . . . . . . . . 160 Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Digital clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Direction indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Disconnecting and reconnecting the battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
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Index251
Distance driven . . . . . . . . . . . . . . . . . . . . . . . . . . . 13, 18
Door
Child safety lock . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Driving economically . . . . . . . . . . . . . . . . . . . . . . . . 163
Driving time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
E
EDL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
Electric power-operated window Operational faults . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Electric sliding/tilting roof . . . . . . . . . . . . . . . . . . . . . . 43
Electrically adjustable rear mirror . . . . . . . . . . . . . . . 57
Electrically adjustable seats . . . . . . . . . . . . . . . . . . . . 60
Electronic Differential Lock Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Electronic Differential Lock (EDL) . . . . . . . . . . . . . 157
Electronic immobiliser . . . . . . . . . . . . . . . . . . . . . 29, 32 Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Electronic stability programme (ESP) . . . . . . . . . . 155 Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Emergency operation Fuel filler flap . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
Engine starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
switching off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Engine compartment Safety information . . . . . . . . . . . . . . . . . . . . . . . 185
Engine electronics Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
replenishing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Engine revolutions counter . . . . . . . . . . . . . . . . . . . . 12
Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
Environmental compatibility . . . . . . . . . . . . . 163, 167
ESP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155 Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Exhaust gas Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Exhaust gas inspection Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Explanations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Exterior mirror . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Exterior mirror heater . . . . . . . . . . . . . . . . . . . . . . . . . 57
F
First-aid box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Fog lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Folding box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Folding down rear seats . . . . . . . . . . . . . . . . . . . . . . . 70
Front airbag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
Front armrest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181 Diesel fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
Fuel gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Petrol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Fuel consumption . . . . . . . . . . . . . . . . . . . . . . . 17, 163 Saving energy . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163 Fuel gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Fuel reserve
Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Full wheel trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220 Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221
G
Gearboxautomatic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
mechanical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
General view Cockpit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Glass roof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Glow plug system . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
H
Handbrake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Hazard warning light system . . . . . . . . . . . . . . . . . . . 48Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Head airbag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Head restraint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Headlight cleaning system . . . . . . . . . . . . . . . . . . . . 55
Headlight flasher . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Headlights Fog lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Headlight cleaning system . . . . . . . . . . . . . . . . . 55
Heated windscreen washer nozzles . . . . . . . . . . . . 53
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