Inspecting and replenishing
166
The coolant expansion bottle is loca
ted in the engine compartment on
the right. – Switch the engine off. – Open the bonnet
⇒
in “Working in the engine compartment” on
page 160.
– Check the level of coolant in the coolant expansion bottle
⇒
page 165, fig. 154
. When the engine is cold, the coolant level must
lie between the and markings. When the engine is warm, the level may also lie slightly above the hatched part.
If the coolant level in the reservoir is too low, this is indicated by the warning light in the instrument cluster
⇒page 30. 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 leak
s 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 160, “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
⇒
page 165, fig. 154
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 165, “Coolant”. Do not use an alternative additive if
the coolant additive G12 PLUS - PLUS is not av
ailable in exceptional cases. Just top
up the system with water and as soon as possible arrange adjustment to correct the mixing ratio of water and coolant additive again by a specialist garage. Only use fresh coolant for topping up the system.Do not top up the fluid above the hatched
part! Excess coolant which is heated up
is forced out of the cooling system through the pressure relief valve in the cap of the coolant compensation bottle. Wait until the engine has cooled down for a system which has suffered a major loss of coolant before pouring in coolant. This is necessary to avoid engine damage.
WARNING
•
The cooling system is pressurized! Do not open the cap of the coolant
expansion bottle if the engine is
still hot - risk of scalding!
•
The coolant additive and thus all of the coolant is harmful to your health.
Avoid contact with the coolant. Coolant vapours are also harmful to the health. It is important, therefore, to always safely store any coolant additive in its original container out of the reach of children - risk of poisoning!•
If any splashes of coolant get into yo
ur eyes, rinse out
your eyes immedi-
ately with clear water and contact a doctor as soon as possible.
Aa
Ab
s2g8.b.book Page 166 Tuesday, April 7, 2009 8:53 AM
Inspecting and replenishing
167
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
•
You should also consult a doctor without delay if you have inadvertently
swallowed coolant.
Caution
Do not continue your journey if for some reason it is not possible under the conditions prevailing to top up with coolant. Switch the engine off
and obtain
professional assistance from a specialist garage, otherwise it could lead to severe engine damage.
For the sake of the environment
Do not re-use coolant if it is necessary to
drain the coolant in the system. It should
be collected and disposed of in comp
liance with environmental protection
regulations.Radiator fan The radiator fan may switch on suddenly.The radiator fan is driven by an electr
ic motor and controlled according to the
coolant temperature. The radiator fan may continue running fo
r up to 10 minutes after the engine has
been switched off - even if
the ignition is also off. It
may also switch on suddenly
after a certain time, if•
the coolant temperature has risen beca
use of an accumulation of heat or
•
the warm engine compartment is heated
up additionally by
strong sunlight.
WARNING
You must therefore be aware when work
ing in the engine compartment that
the fan may switch on suddenly - risk of injury!
Brake fluidInspecting the brake fluid levelThe brake fluid reservoir is located on the left of the engine compartment. The brake fluid reservoir on right-hand steering models is positioned on the other side of the engine compartment. – Switch the engine off.– Open the bonnet
⇒
in “Working in the engine compartment” on
page 160.
– Inspect the brake fluid level in the reservoir
⇒
fig. 155
. The level must
be between the “MIN” and “MAX” markings.
A slight drop in the fluid level results when driving due to normal wear-and-tear and automatic adjustment of the br
ake pads, and is perfectly normal.
There may be an indication of a leak in the brake system, however, if the fluid level drops significantly within a short time or if it drops below the “MIN” marking. A situ- ation where the brake fluid level is too low is indicated by the warning light
lighting up in the instrument cluster
⇒page 34. In this case
stop immediately and
do not drive any further! Obtain professional assistance.
WARNING (continued)
Fig. 155 Engine compart- ment: Brake fluid reservoir
s2g8.b.book Page 167 Tuesday, April 7, 2009 8:53 AM
Fuses and light bulbs
194
Fuse assignment in engine compartment - version 2Certain electrical components are only st
andard on certain vehicle model versions
or only suppliable as optional
equipment for certain models.
Fuse assignment in the dash panelCertain electrical components are only standard on certain vehicle model versions or only suppliable as optional
equipment for certain models.
No.
Power consumer
Amperes
1
Pump for ABS
30
2
Valves for ABS
30
3
Radiator fan 1st stage
30
4
Glow plugs for heating the coolant, relay for secondary air pump
50
5
Engine control unit
50
6
Radiator fan 2nd stage
40
7
Main fuse of the interior
110
8
Dynamo
110 / 150
a)
a)Depending on the engine type and equipment.
Fig. 178 Schematic repre- sentation of fuse box in engine compartment - version 2
No.
Power consumer
Amperes
1
Heating of the exterior mirrors, relay for cigarette lighter, power seats and washing nozzles
10
2
Turn signal lights, Xenon headlight
10
3
Lighting in storage compartment
5
4
Licence plate light
5
5
Seat heating, Climatronic, circulating air flap, exterior mirror heater, cruise control system
7,5
6
Central locking system
5
7
Reversing light, sensors for parking aid
10
8
Phone
5
9
ABS, ESP
5
10
Ignition, S-contact
a)
10
11
Instrument cluster
5
Fig. 179 Schematic repre- sentation of the fuse carrier in the dash panel
s2g8.b.book Page 194 Tuesday, April 7, 2009 8:53 AM
Index
216
Child seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Classification into groups . . . . . . . . . . . . . . . . . 126ISOFIX system . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129Use of child safety seats . . . . . . . . . . . . . . . . . . 126
Children and safety . . . . . . . . . . . . . . . . . . . . . . . . . . 123Chrome parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149 Cigarette lighter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147Climatronic
Defrosting windows . . . . . . . . . . . . . . . . . . . . . . . 91Recirculated air mode . . . . . . . . . . . . . . . . . . . . . 91Setting temperature . . . . . . . . . . . . . . . . . . . . . . . 92
Climatronic (automatic air conditioning) . . . . . . . 89 Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Clothes hooks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82 Cockpit
General view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Compartments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79Computer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Convenience operation . . . . . . . . . . . . . . . . . . . . . . . 45 Converting/masking over headlights . . . . . . . . . . 142Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
replenishing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Coolant level
Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Coolant quantity
Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Coolant temperature gauge . . . . . . . . . . . . . . . . . . . 16 Coolant temperature/coolant level
Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Correct seated position . . . . . . . . . . . . . . . . . . . . . . 104
Counter for distance driven . . . . . . . . . . . . . . . . . . . . 18 Cruise control system . . . . . . . . . . . . . . . . . . . . . . . . . . 98Cup holder
front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
DDeactivating
an airbag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Deactivating an airbag . . . . . . . . . . . . . . . . . . . . . . . 120 Defrosting rear window . . . . . . . . . . . . . . . . . . . . . . . . 55De-icing the windows . . . . . . . . . . . . . . . . . . . . . . . 150 Detachable towing device . . . . . . . . . . . . . . . . . . . 146 Diesel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155Diesel engines
Starting the engine . . . . . . . . . . . . . . . . . . . . . . . . . 95
Digital clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Direction indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Distance driven . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Door
Child safety lock . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Driving economically . . . . . . . . . . . . . . . . . . . . . . . . 138EEDL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132 Electric sliding/tilting roof . . . . . . . . . . . . . . . . . . . . . . 46 Electrically adjustable exterior mirror . . . . . . . . . . . 58Electronic Differential Lock . . . . . . . . . . . . . . . . . . . 132Electronic immobiliser . . . . . . . . . . . . . . . . . . . . . 29, 36
Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Electronic stability programme . . . . . . . . . . . . . . . . 131 Electronic stability programme (ESP)
Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Emergency wheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183 Engine
starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94switching off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Engine compartment
Safety information . . . . . . . . . . . . . . . . . . . . . . . . 160
Engine electronics
Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
Changing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164changing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163replenishing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Engine revolutions counter . . . . . . . . . . . . . . . . . . . . 16Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138 Environmental compatibility . . . . . . . . . . . . . 138, 142 ESP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Exhaust gas
Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Exhaust gas inspection
Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Explanations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Exterior mirror . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 Exterior mirror heater . . . . . . . . . . . . . . . . . . . . . . . . . 58FFirst-aid box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
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