Engine
Display messages
Possible causes/consequences and
M
M
Solutions
+
Top up coolant See
Top up coolant See
Owner's Manual
Owner's Manual
The coolant level is too low.
!
Avoid making long journeys with too little coolant in the engine
cooling system. The engine will otherwise be damaged.
X
Top up the coolant, observing the warning notes before doing so
(
Y
page 376).
If you have to top up the coolant frequently:
X
Contact a qualified specialist workshop and have the engine cooling
system checked.
?
The fan motor is faulty.
X
If the coolant temperature is below 120 †, you can continue driving
to the nearest qualified specialist workshop.
X
Avoid heavy loads on the engine as you do so, e.g. driving in moun-
tainous terrain and stop-start traffic.
?
Coolant Stop vehi‐
Coolant Stop vehi‐
cle Switch engine
cle Switch engine
off
off
The coolant is too hot.
A warning tone also sounds.
G
WARNING
Never drive with an overheated engine. Driving when your engine is
overheated can cause some 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
Safeguard the vehicle against rolling away (
Y
page 191).
X
Wait until the engine has cooled down.
X
Make sure that the air supply to the engine radiator is not blocked,
e.g. by frozen slush.
X
Do not start the engine again until the display message goes out and
the coolant temperature is below 120 †. The engine may otherwise
be damaged.
X
Pay attention to the coolant temperature display.
If the temperature increases again:
X
Consult a qualified specialist workshop immediately.
Under normal operating conditions and with the specified coolant
level, the coolant temperature may rise to 120 †.
316
Display messages
On-
boar
d
comp
ut
er
and
dis
pla
ys
