2010 Mercedes S-Class Owner's Manual - Page 483

Vehicle status messages in the multifunction display Display messages Possible causes/consequences and M Solutions 481 ? G Warning! Driving when your engine is 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 which can occur just by opening the engine hood. Stay away from the engine if you see or hear steam coming from it. Stop the vehicle in a safe location away from other traffic. Turn off the engine, get out of the vehicle and do not stand near the vehicle until the engine has cooled down. ! 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. Z Practical hints The coolant is too hot. Coolant Low Stop X Stop the vehicle immediately as soon as it is safe to do so. Vehicle X Turn off the engine immediately. Turn X Engage the parking brake. Engine Off X Only start the engine again after the message disappears. You could otherwise damage the engine. X Observe the coolant temperature gauge in the instrument cluster. X If the temperature rises again: Contact an authorized Mercedes-Benz Center immediately. During severe operation conditions and stop-and-go city traffic, the coolant temperature may rise close to 248‡ (120†).