Mercedes-Benz S-Class 2012 - Manual (Page 408)

Display messages Possible causes/consequences and M Solutions
? The engine fan is defective.
X At coolant temperatures under 248 ‡ (120 † ), drive to the next
qualified specialist workshop.
X Avoid subjecting the engine to heavy loads, e.g. driving in
mountainous terrain, and stop-and-go traffic.
# The battery is not being 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 engine oil level at the latest when next refueling
(
Y page 457).
X If necessary, add engine oil ( Y page 459).
X If engine oil needs to be added more often than usual, have the
engine checked at a qualified specialist workshop.
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 ( Y page 457).
X If necessary, add engine oil ( Y page 457).
X If engine oil needs to be added more often than usual, have the
engine checked at a qualified specialist workshop.
Information on approved engine oils can be obtained from any qualified specialist workshop
or on the Internet at http://www.mbusa.com (USA only).
406
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On-board computer and displays