Mercedes-Benz S-Class Operator's Manual page 409

! The oil level is too low. Avoid long journeys with too little engine oil. There is a risk of
engine damage.
The display messages and the corresponding symbol that indicate that the oil level is too
low must not be ignored.
Display messages
4
Engine Oil Level
Low Stop Vehicle
Turn Engine Off
4
Engine Oil Level
Too High
4
Engine Oil Level
Cannot Be Measured
8
Reserve Fuel
C
8
Gas Cap Loose
8
Ultra Low-sulfur
Diesel Fuel Only
Possible causes/consequences and M Solutions
Vehicles without an oil dipstick: the engine oil level is too low.
There is a risk of engine damage.
X
Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X
Apply the parking brake.
X
Add engine oil ( Y page 459) and check the oil level
( Y page 457).
Vehicles without an oil dipstick: you have added too much engine
oil. There is a risk of damage to the engine or to the catalytic
converter.
X
Have the excess oil siphoned off at a qualified specialist
workshop. Observe the legal requirements.
Vehicles without an oil dipstick: the measuring system is
defective.
X
Visit a qualified specialist workshop.
The fuel level has dropped into the reserve range.
X
Refuel at the nearest gas station.
There is only a very small amount of fuel in the fuel tank.
X
Refuel at the nearest gas station without fail.
The fuel system pressure is too low. The fuel filler cap is not closed
correctly or the fuel system is leaking.
X
Check that the fuel filler cap is correctly closed.
If the fuel filler cap is not correctly closed:
X
Close the fuel filler cap.
If the fuel filler cap is correctly closed:
X
Visit a qualified specialist workshop.
Vehicles with a diesel engine: the fuel level has fallen below the
reserve range.
X
Refuel at the nearest gas station.
X
Only use commercially available vehicular ULTRA-LOW SULFUR
HIGHWAY DIESEL FUEL (ULSD, 15 ppm SULFUR MAXIMUM).
I n f o r ma t i o n P r o v i d e d b y :
Display messages
407
Z