Mercedes-Benz 2008 M-Class Operator's Manual page 435

Practical hints
What to do if ...
Display symbol Display message
N
Check engine oil level
at next refueling.
When the message Check engine oil
level at next refueling. appears while
the engine is running and at operating tem-
perature, the engine oil level has dropped
to approximately the minimum level.
When this occurs, the warning will first
come on intermittently and then stay on if
the oil level drops further.
Visually check for oil leaks. If no obvious oil
leaks are noted, drive to the nearest
service station where the engine oil should
be topped to the required level with an
approved engine oil.
434
Possible cause/consequence Possible solution
The engine oil level is too low.
For information on approved engine oils,
refer to the Factory Approved Service
Products pamphlet (USA only) or contact
an authorized Mercedes-Benz Light Truck
Center.
!
The engine oil level warning should not be
ignored. Extended driving with the symbol dis-
played could result in serious engine damage
that is not covered by the Mercedes-Benz
Limited Warranty.
Check the engine oil level ( page 343)
and add engine oil as required
( page 344).