2004 Mercedes ML-Class Owner's Manual - Page 117

Controls in detail Instrument cluster Coolant temperature gauge Warning! Under normal driving conditions, the coolant 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 damage which is not covered by the Mercedes-Benz Limited Warranty. Display in the speedometer Changing display Press the left knob 1 in the instrument cluster ( page 116). The display changes between main odometer and trip odometer. Press the left knob 1 twice. The next scheduled service is displayed ( page 232). G Driving when your engine is badly overheated 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. 117