2011 Mercedes GL-Class Owner's Manual - Page 243

Display messages The display messages and the corresponding symbol that indicate that the coolant level is too low must not be ignored. Display messages Possible causes/consequences and M Solutions The coolant is too hot. X Pull over and stop the vehicle safely and switch off the engine, paying attention to road and traffic conditions. X Make sure that the air supply to the radiator is not blocked, e.g. by snow, slush or ice. X Wait until the display message disappears before restarting the engine. Otherwise, there is a risk of engine damage. X Pay attention to the coolant temperature display. X If the temperature increases again, visit a qualified specialist workshop immediately. The poly-V-belt may have torn. X Pull over and stop the vehicle safely and switch off the engine, paying attention to road and traffic conditions. X Open the hood. X Check whether the poly-V-belt is torn. If the poly-V-belt is torn: 241 ? Coolant Stop car, switch engine off ! Do not continue driving. The engine could otherwise overheat. X Consult a qualified specialist workshop. If the poly-V-belt is OK: X Wait until the display message disappears before restarting the engine. Otherwise, there is a risk of engine damage. X Pay attention to the coolant temperature display. X Visit a qualified specialist workshop. 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. ! If the coolant temperature exceeds 248 ‡(120 †) do not continue driving. The engine will otherwise be damaged. Z On-board computer and displays