Mercedes-Benz 2013 GL Class - Manual (Page 301)

Display messages Possible causes/consequences and M Solutions
# The battery is not being charged.
A warning tone also sounds.
Possible causes are:
R
a defective alternator
R
a torn poly-V-belt
R
a malfunction in the electronics
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Open the hood.
X Check whether the poly-V-belt is torn.
If the poly-V-belt is torn:
! Do not continue driving. The engine could otherwise overheat.
X Consult a qualified specialist workshop.
If the poly-V-belt is not damaged:
X Visit a qualified specialist workshop.
4
Check Engine Oil
At Next Refueling
The engine oil level has dropped to the minimum level.
A warning tone also sounds.
X Check the oil level when next refueling, at the latest
(
Y page 362).
X If necessary, add engine oil ( Y page 362).
X Have the engine checked at a qualified specialist workshop if
engine oil needs to be added more often than usual.
! Avoid long journeys with too little engine oil. The engine will
otherwise be damaged.
Information on approved engine oils can be obtained from any
qualified specialist workshop or on the Internet at http://
www.mbusa.com (USA only).
8
Fuel Level Low
The fuel level has dropped into the reserve range.
X Refuel at the nearest gas station.
C There is only a very small amount of fuel in the fuel tank.
X Refuel at the nearest gas station without fail.
Display messages
299
On-board computer and displays
Z