Mercedes-Benz GLS Operator's Manual page 266

Display messages
264
Display messages
C
8
Gas Cap Loose
8
Ultra Low-sulfur
Diesel Fuel Only
¸
Replace Air Filter
!
Check Fuel Filter
Ø
Check Additive See
Operator's Manual
Ø
Remaining Starts: 16
Possible causes/consequences and M Solutions
There is only a very small amount of fuel in the fuel tank.
Refuel at the nearest gas station without fail.
X
The fuel filler cap is not closed correctly or the fuel system is leaking.
Check that the fuel filler cap is correctly closed.
X
If the fuel filler cap is not correctly closed:
Close the fuel filler cap.
X
If the fuel filler cap is correctly closed:
Visit a qualified specialist workshop.
X
Vehicles with a diesel engine: the fuel level has fallen below the
reserve range.
Refuel at the nearest gas station.
X
Only use commercially available vehicular ULTRA-LOW SULFUR
X
HIGHWAY DIESEL FUEL (ULSD, 15 ppm SULFUR MAXIMUM).
Vehicles with a diesel engine: the engine air filter is dirty and must be
replaced.
Visit a qualified specialist workshop.
X
Vehicles with a diesel engine: there is water in the fuel filter. The water
must be drained off.
Visit a qualified specialist workshop.
X
The DEF tank is almost empty.
Have the DEF tank filled immediately at a qualified specialist work-
X
shop ( page 158).
Y
The DEF system is malfunctioning.
Visit a qualified specialist workshop.
X
The DEF level has fallen to a minimum. You can start the engine a
further 16 times.
Have the DEF tank filled immediately at a qualified specialist work-
X
shop ( page 158).
Y
i
You can start the engine a further 16 times. If DEF is not added, it
will then not be possible to restart the engine. Refill the DEF tank
with approximately 2 gal (7.5 l) of DEF (
If the 'ten starts' message appears in the display and a warning tone
sounds, the DEF system is malfunctioning.
Visit a qualified specialist workshop.
X
page 158).
Y