2011 Mercedes R-Class Owner's Manual - Page 226

224 Display messages Display messages Possible causes/consequences and M Solutions The light sensor is faulty. The low-beam headlamps are switched on. X USA only: switch off daytime driving lights in the on-board computer (Y page 206). X X On-board computer and displays b AUTO Light Inoperative Switch the lights on and off using the light switch. Visit a qualified specialist workshop. b Switch Off Lights The lights are still switched on when you leave the vehicle. A warning tone also sounds. X Turn the light switch to $ or c. or X If the rear fog lamp is switched on: press the light switch in to the stop. Engine Display messages Possible causes/consequences and M Solutions The coolant level is too low. X Add coolant, observing the warning notes before doing so (Y page 281). X If coolant needs adding more often than usual, have the engine coolant system checked at a qualified specialist workshop. + Top Up Coolant See Operator's Manual G Warning Do not spill antifreeze on hot engine parts. Antifreeze contains ethylene glycol which may burn if it comes into contact with hot engine parts. You could be seriously burned. ! The coolant level is too low. Avoid making long journeys with too little coolant in the cooling system. The engine will otherwise be damaged. The display messages and the corresponding symbol that indicate that the coolant level is too low must not be ignored.