118 Controls in detailInstrument clusterCoolant temperature gauge
Under normal driving conditions, the cool-
ant temperature may rise to 248°F 
(120°C). The coolant temperature may 
climb to the red marking:
at high outside temperatures
during stop-and-go city traffic
when driving on hilly terrain
The engine should not be operated with 
the coolant temperature in the red zone. 
Doing so may cause serious engine dam-
age which is not covered by the 
Mercedes-Benz Limited Warranty.
Display in the speedometer
Changing display
Press the left knob1 in the instru-
ment cluster (
page 117).
The display changes between main 
odometer and trip odometer.
Press the left knob1 twice.
The next scheduled service is displayed 
(page 237).
Warning!
G
Driving when your engine is badly overheat-
ed can cause some fluids which may have 
leaked into the engine compartment to 
catch fire. You could be seriously burned.
Steam from an overheated engine can cause 
serious burns and can occur just by opening 
the engine hood. Stay away from the engine 
if you see or hear steam coming from it.
Turn off the engine, get out of the vehicle 
and do not stand near the vehicle until the 
engine has cooled down.