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Problem Possible causes/consequences and M Solutions
?
The red coolant
warning lamp comes on
while the engine is
running.
The coolant level is too low.
If the coolant level is correct, the airflow to the radiator may be
blocked or the electric radiator fan may be malfunctioning.
The coolant is too hot and the engine is no longer being cooled
sufficiently.
X
Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X
Allow the engine and coolant to cool.
X
Check the coolant level and add the coolant (Y page 240).
Observe the warning notes.
X
If the coolant needs adding more often than usual, have the
engine coolant system checked.
X
Make sure that the air supply to the radiator is not blocked, e.g.
by snow, slush or ice.
X
At coolant temperatures below 248 ‡ (120 †), continue driving
to the next qualified specialist workshop.
X
Avoid subjecting the engine to heavy loads, e.g. driving in
mountainous terrain, and stop-start driving.
?
The red coolant
warning lamp comes on
while the engine is
running. A warning tone
also sounds.
The coolant has exceeded a temperature of 248 ‡ (120 †). The
airflow to the radiator may be blocked or the coolant level may be
too low.
The engine is not being cooled sufficiently and may be damaged.
X
Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X
Allow the engine and coolant to cool.
G
Warning
Driving when your engine is overheated can cause some fluids which may have leaked into the
engine compartment to catch fire. You could be seriously burned.
Steam from an overheated engine can cause serious burns which can occur just by opening the
engine hood. Stay away from the engine if you see or hear steam coming from it.
Stop the vehicle in a safe location away from other traffic. Turn off the engine, get out of the
vehicle and do not stand near the vehicle until the engine has cooled down.
!
If the coolant temperature exceeds 248 ‡(120 †) do not continue driving. The engine will
otherwise be damaged.
Warning and indicator lamps in the instrument cluster
211
On-board computer and displays
BA 204 USA, CA Edition A 2011; 1; 5, en-US
hereepe Version: 3.0.3.6
2010-05-20T09:17:30+02:00 - Seite 211
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