2011 Mercedes SL-Class Owner's Manual - Page 246

244 Vehicle status messages in the multifunction display Engine Display messages Possible causes/consequences and M Solutions There may be a malfunction in Rthe Rthe Rthe Rthe X = or Engine Service fuel management system ignition system exhaust system fuel system ; Have the engine checkedas soon as possible at an authorized Mercedes-Benz Center. Practical hints ; Service Required Certain electronic systems are unable to relay information to the control system. The coolant temperature display or the tachometer may have failed. X Have the electronic systems checked at an authorized Mercedes-Benz Center. The coolant level is too low. X Add coolant (Y page 184). X If you have to add coolant frequently, have the cooling system checked at an authorized Mercedes-Benz Center. + Top Up Coolant See Oper. 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. ! Do not ignore the low engine coolant level warning. Extended driving with the message and symbol displayed may cause serious engine damage not covered by the Mercedes-Benz Limited Warranty. Do not drive without sufficient amount of coolant in the cooling system. The engine will overheat causing major engine damage.