Display messages
Possible causes/consequences and
M
Solutions
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Coolant: stop
switch engine off
A warning tone also sounds. The coolant is too hot.
G
WARNING
Never drive with an overheated engine. Driving when the engine is
overheated can cause fluids which may have leaked into the engine
compartment to catch fire.
In addition, steam from an overheated engine can cause serious
burns, which can occur just by opening the bonnet.
There is a risk of injury.
X
Stop the vehicle immediately, paying attention to road and traffic
conditions, and switch off the engine.
X
Secure the vehicle against rolling away (
Y
page 177).
X
Wait until the engine has cooled down.
X
Make sure that the air supply to the radiator is not obstructed – by
frozen slush, for example.
X
Do not start the engine again until the display message goes out and
the coolant temperature is below the maximum value specified. The
engine could otherwise be damaged.
X
Monitor the
?
coolant temperature gauge in the instrument
cluster.
X
If the temperature increases again, visit a qualified specialist work-
shop immediately.
Under normal operating conditions and with the specified coolant
level, the
?
coolant temperature display may rise to the following
maximum values:
R
up to 110 † on vehicles with an engine output under 100 kW
R
up to 120 † on vehicles with an engine output above 100 kW
?
The fan motor is faulty.
X
Check the
?
coolant temperature gauge in the instrument clus-
ter.
If the coolant temperature is below the maximum value specified
below, you can continue driving to the nearest qualified specialist
workshop.
Avoid heavy loads on the engine, e.g. driving in mountainous terrain,
and stop-start traffic.
Under normal operating conditions and with the specified coolant
level, the
?
coolant temperature display may rise to the following
maximum values:
R
up to 110 † on vehicles with an engine output under 100 kW
R
up to 120 † on vehicles with an engine output above 100 kW
Display messages (vehicles with steering wheel buttons)
271
On-board computer and displays
Z
