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Engine protection:
engine power reduced
%
Coolant pressure
regulation faulty
%
Coolant level too
low
On-board computer event window
Possible causes/consequences and M Solutions
The coolant temperature is too high. Engine power output is auto-
matically reduced.
X
Reduce the speed.
X
Shift to a lower gear.
or
X
Stop the vehicle, paying attention to road and traffic conditions.
X
Switch off the engine.
X
Remove objects that could block the air supply to the radiator, e.g.
paper which has blown onto the grille.
The electrical connection or the hose fitting on the coolant expansion
tank is loose. The turquoise cap on the coolant expansion tank is not
tight.
X
Check the electrical connection and the hose fitting on the coolant
Y
expansion tank (
page 356).
X
If you detect any leakage, have the engine cooling system checked
at a qualified specialist workshop.
Supplementary text Û:
The coolant level has dropped below the normal filling level. The yellow
event window is shown when the engine is cold and the ignition lock
is in the drive position.
X
Top up the coolant (
X
If the coolant level drops again, immediately have the cooling sys-
tem checked at a qualified specialist workshop.
Top up coolant
Y
page 356).
163
Z
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