Display messages Possible causes/consequences and
M Solutions
# The battery is no
tbeing charged.
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 Vehicles with an oil dipstick
:the oil level has dropped to the
minimum level.
X Check the oil level when next refueling, at the latest
(Y page 421).
X If necessary, add engine oil (Y page 423).
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). 4
Check Engine Oil
Level (Add 1
quart) (USA only)
Check Engine Oil Level (Add 1
Liter) (Canada only) Vehicles without an oil dipstick: the engine oil level is too low.
X
Check the oil level when next refueling, at the latest
(Y page 421).
X If necessary, add engine oil (Y page 423).
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). Display messages
373On-board computer and displays Z
