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›
Avoid high engine speed.
B
Operating range
C
High temperature range
Checking the fill level and topping up
Test conditions
✓ Park the vehicle on a horizontal surface.
✓ The engine is turned o and cooled.
Checking the level
The fill level must be
within the marked range.
›
If the fill level is below
the mark
, top up
the coolant.
NOTICE
Danger of damage to the engine compartment!
Do not top up the coolant above the marked area.
The coolant could be forced out of the cooling sys-
tem when heated.
NOTICE
There must be a small quantity of coolant in the tank.
Do not add coolant when the tank is empty.
▶
Stop driving! Seek the help of a specialist garage.
Refilling
CAUTION
Risk of scalding!
The cooling system is pressurised. Do not open the
cap of the coolant expansion tank while the engine is
warm. Let the engine cool down.
›
Place a rag on the lid of the tank and carefully un-
screw the lid.
›
Refill with coolant of the correct specification.
›
Screw on the cap until it clicks into place.
Specification
For refilling, use coolant additive G12evo (TL 774 L)
or G13 (TL 774 J).
NOTICE
Risk of damage to the cooling system and the en-
gine!
Adding coolant that does not conform to the correct
specification can reduce the corrosion protection of
the cooling system.
Troubleshooting
Coolant level is too low
or illuminates
Message concerning the required coolant
check
›
Check the coolant level.
The coolant level is OK:
›
Check the fuse for radiator fan, replace if re-
quired » page 141, Replacing a fuse.
The fuse is OK, the indicator light comes on again:
›
Stop driving! Seek the help of a specialist garage.
Coolant temperature too high
or
illuminates
Report regarding the engine overheating
›
Stop driving.
›
Stop the engine and allow it to cool.
›
Drive on after the indicator light goes out.
Engine fault
or lights up.
›
Stop driving!
›
Stop the engine and seek the help of a specialist
garage.
There is no coolant of the correct specification
available
›
Top up with distilled or demineralised water.
›
Have the correct coolant mixing ratio corrected by
a specialist garage as soon as possible.
Another substance was used for topping up, other
than distilled or demineralised water:
›
Have the coolant changed by a specialist garage.
It is not possible to top up with a sucient amount
of coolant
›
Stop driving.
›
Stop the engine and seek the help of a specialist
garage.
There is a loss of coolant
›
Top up the coolant and seek the help of a specialist
garage.
Engine electronics
Troubleshooting
Petrol engine control faulty
illuminates
Driving in emergency mode is possible - a
noticeable reduction in engine performance may oc-
cur.
134
Engine, exhaust system and fuel › Engine electronics
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