Mercedes-Benz C-Class, Owner'S Manual

Page: 336 / 489

Engine
Display messages
Possible causes/consequences and M M Solutions
+
Top Top up up coolant coolant See 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 393).
X
If the coolant needs topping up more often than usual, have the
engine coolant system checked at a qualified specialist work-
shop.
? ?
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 putting the engine under heavy load as you do so, e.g.
driving in mountainous 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 traf-
fic conditions, and switch off the engine.
X
Secure the vehicle to prevent it from rolling away (
Y
page 207).
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.
X
If the temperature increases again, visit a qualified specialist
workshop immediately.
Under normal operating conditions and with the specified coolant
level, the coolant temperature may rise to 120 †.
Display messages
333
On-
boar
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