3.38
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– CHECKING AND REFILLING
TIPS AND MAINTENANCE
Checking coolant level
Warning
Never open the bonnet if you can
see steam or coolant leaving the
engine compartment – Risk of
scalding! Wait until no more steam
or coolant can be seen.
The level can only be checked properly
when the engine is not running.
The coolant level must be between the
max
and
min
marks on the expansion
tank when engine is cold and can be
slightly above the
max
mark when it is
warm.
Coolant losses
Coolant loss normally indicates leaks in
the system. In this case the cooling sys-
tem should be checked by a Technical Ser-
vice Centre without delay. It is not suffi-
cient merely to add coolant.
In a sealed system losses can only occur if
the boiling point of the coolant is
exceeded as a result of overheating, and
coolant is forced out of the system.
Topping up coolant
Switch engine off and let it cool down.
Then cover expansion tank cap with a
cloth and turn cap carefully anti-clockwise
and remove.
Warning
Do not remove expansion tank cap
when engine is hot – danger of
scalding:
System is under pressure.
No other coolant may be used if
G 12
is
not available. In this case only water can
be used and the correct mixture concen-
tration must be restored with the speci-
fied coolant additive (see previous page)
as soon as possible.
Please also refer to the further notes
on the next page.
B11-051D
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