Mercedes-Benz B-Class 2011, Owner'S Manual

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Display messages Possible causes/consequences and M Solutions
?
Coolant Stop vehi‐
cle Switch engine
off
The coolant is too hot.
A warning tone also sounds.
G WARNING
Do not drive when your engine is overheated. This can cause some
fluids which may have leaked into the engine compartment to
catch fire.
Steam from the overheated engine can also 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
Engage the electric parking brake.
X
Leave the vehicle and keep a safe distance from the vehicle 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 under 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.
The reading may rise up to 120 † under normal driving conditions
if the coolant has been filled correctly.
#
The battery is not being charged.
Possible causes:
R
faulty alternator
R
torn poly-V-belt
R
a malfunction in the electronics
X
Stop the vehicle immediately, paying attention to road and traf-
fic conditions, and switch off the engine.
X
Open the bonnet.
X
Check whether the poly-V-belt is torn.
If the poly-V-belt is torn:
!
Do not continue driving. The engine could otherwise overheat.
X
Consult a qualified specialist workshop.
If the poly-V-belt is OK:
X
Visit a qualified specialist workshop immediately.
220
Display messages
On-board
computer
and
displays