Battery - Mercedes-Benz 2010 M-Class Operator's Manual

Vehicle status messages in the multifunction display
290
Display messages
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Possible causes/consequences and M Solutions
Coolant The poly-V-belt could be broken.
Stop car,
X
Stop the vehicle immediately as soon as it is safe to do so.
switch
X
Turn off the engine immediately.
engine
X
Check the poly-V-belt.
off.
X
If it is broken: Do not continue to drive. Otherwise the
engine will overheat due to an inoperative water pump
which may result in damage to the engine. Contact an
authorized Mercedes-Benz Center.
X
If it is intact: Do not continue to drive the vehicle with this
message displayed. Doing so could result in serious engine
damage that is not covered by the Mercedes-Benz Limited
Warranty.
X
Observe the coolant temperature in the multifunction
display.
X
Drive to the nearest authorized Mercedes-Benz Center
immediately.
The radiator cooling fan is malfunctioning.
X
Observe the coolant temperature in the multifunction
display.
If the coolant temperature is below 248‡ (120†), you may
continue driving to an authorized Mercedes-Benz Center.
X
Avoid placing heavy loads on the engine (e.g. by driving
uphill) as well as stop-and-go traffic.
X
Have the fan replaced as soon as possible.
The battery is no longer charging.
Possible causes:
alternator malfunctioning
R
broken poly-V-belt
R
a malfunction in the electronic system
R
X
Stop immediately in a safe location or as soon as it is safe
to do so and check the poly-V-belt.
X
If it is broken: Do not continue to drive. Otherwise the
engine will overheat due to an inoperative water pump
which may result in damage to the engine. Contact an
authorized Mercedes-Benz Center.
X
If it is intact: Drive to the nearest authorized Mercedes-
Benz Center immediately. Adjust driving to be consistent
with reduced braking responsiveness.