Mercedes-Benz 2004 C-Class Wagon Operator's Manual page 292

Practical hints
What to do if ...
Display symbol Display messages
:
ENGINE OIL LEVEL
VISIT WORKSHOP!
ENGINE OIL SENSOR
VISIT WORKSHOP!
When the message ADD 1.0 Qt. ENGINE
(Canada:
OIL WHEN NEXT REFUELING!
) appears while the engine is
1.0 LITER
running and at operating temperature, the
engine oil level has dropped to
approximately the minimum level.
292
Possible cause
The engine oil has dropped to a critical
level.
The measuring system is malfunctioning.
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 oil.
Suggested solution
Check the engine oil level
( page 254) and add oil as required
( page 256).
If you must add engine oil frequently,
have the engine checked for possible
leaks.
Have the measuring system checked
by an authorized Mercedes-Benz
Center.
!
The engine oil level warnings should
not be ignored. Extended driving with
the symbol displayed could result in
serious engine damage that is not
covered by the Mercedes-Benz Limited
Warranty.