Mercedes-Benz M-Class 2012 Owners Manual - Manual (Page 256)

Engine
Display messages Possible causes/consequences and M Solutions
+
Check Coolant
Level See
Operator's Manual
The coolant level is too low.
X Add coolant, observing the warning notes when doing so
(
Y
page 315).
X
If coolant needs to be added more often than usual, have the
engine coolant system checked at a qualified specialist
workshop.
G WARNING
Do not spill antifreeze on hot engine parts. Antifreeze contains ethylene glycol which may burn
if it comes into contact with hot engine parts. You could be seriously burned.
! The coolant level is too low. Avoid making long journeys with too little coolant in the cooling
system. The engine will otherwise be damaged.
The display messages and the corresponding symbol that indicate that the coolant level is
too low must not be ignored.
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Display messages
On-boar
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compu
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