Mercedes-Benz GL-Class 2010 Owners Manual - Manual (Page 309)

! The engine should not be operated with the coolant temperature above 248‡ (120†).
Doing so may cause serious damage which is not covered by the Mercedes-Benz Limited
Warranty.
Display messages Possible causes/consequences and M Solutions
? Coolant
Stop car,
switch
engine
off.
The poly-V-belt could be broken.
X Stop the vehicle immediately as soon as it is safe to do so.
X Turn off the engine immediately.
X 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: 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.
Vehicle status messages in the multifunction display
307
Practical hints
X164_AKB; 5; 31, en-US
d2ureepe,
Version: 2.11.8.1
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