2011 Mercedes E-Class Owner's Manual - Page 228

226 Display messages Display messages Possible causes/consequences and M Solutions The lights are still switched on when you leave the vehicle. A warning tone also sounds. X Turn the light switch to c. Adaptive Highbeam Assist is faulty. X Visit a qualified specialist workshop. Adaptive Highbeam Assist is deactivated and temporarily inoperative, if: Rthe On-board computer and displays b Switch Off Lights Adaptive Highbeam Assist Inoperative Adaptive Highbeam Assist Currently Unavailable See Operator's Manual windshield is dirty in the camera's field of vision. is impaired due to heavy rain, snow or fog. X Clean the windshield. Rvisibility Adaptive Highbeam Assist is available again, if: dirt (e.g. slush) drops away while the vehicle is in motion. system detects that the camera is fully operational again. The Adaptive Highbeam Assist Now Available message is displayed. Rthe Rthe Engine Display messages Possible causes/consequences and M Solutions The coolant level is too low. X Add coolant, observing the warning notes when doing so (Y page 274). X If coolant needs adding more often than usual, have the engine coolant system checked at a qualified specialist workshop. + Check Coolant Level 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.