2011 Mercedes CL-Class Owner's Manual - Page 363

Display messages Display messages Possible causes/consequences and M Solutions 361 # The battery is not being charged. Possible causes are: Ra Ra faulty alternator torn poly-V-belt Ra malfunction in the electronics 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: ! Do not continue driving. The engine could otherwise overheat. X Consult a qualified specialist workshop. If the poly-V-belt is OK: X Visit a qualified specialist workshop. 4 Check Engine Oil at Next Refueling Vehicles with oil dipstick: the oil level has dropped to a critical level. X Check the oil level (Y page 405). X If necessary, add the engine oil (Y page 406). X Have the engine checked for leaks if engine oil has to be added more often than usual. Vehicles without an oil dipstick: the engine oil level is too low. X Check the oil level (Y page 405). X If necessary, add the engine oil (Y page 405). X Have the engine checked for leaks if engine oil has to be added more often than usual. 4 Check Engine Oil Level(Add 1 quart) (USA only) Check Engine Oil Level(Add 1 Liter) (Canada only) Information on approved engine oils can be obtained from any qualified specialist workshop or on the Internet at http://www.mbusa.com (USA only). ! The oil level is too low. Avoid long journeys with too little engine oil. There is a risk of engine damage. Z On-board computer and displays ? The engine fan is faulty. X At coolant temperatures below 248 ‡ (120 †), continue driving to the next qualified specialist workshop. X Avoid subjecting the engine to heavy loads, e.g. driving in mountainous terrain, and stop-start driving.