2009 Mercedes S-Class Owner's Manual - Page 324
2009 Mercedes S-Class Manual
Page 324 highlights
Practical hints Vehicle status messages in the multifunction display Display messages Possible cause/consequence Possible solution If the coolant temperature is below 248‡ (120†), you may continue driving to an authorized Mercedes-Benz Center. X Avoid placing heavy loads on the engine (e.g. by driving uphill) as well as stop-and-go traffic. X Have the fan replaced as soon as possible. X # The battery is no longer charging. Possible causes: Ralternator Rbroken Ra malfunctioning poly-V-belt malfunction in the electronic system Stop immediately in a safe location or as soon as it is safe to do so and check the poly-V-belt. X If it is broken: Do not continue to drive. Otherwise the engine will overheat due to an inoperative water pump which may result in damage to the engine. Contact an authorized Mercedes-Benz Center. X If it is intact: Drive to the nearest authorized Mercedes-Benz Center immediately. Adjust driving to be consistent with reduced braking responsiveness. X X # N Low Voltage Start Engine Check oil level at next refueling. The battery has insufficient voltage. The engine oil has dropped to a critical level. Start the engine. Check the engine oil level (Y page 243) and add engine oil as required (Y page 244). X If you must add engine oil frequently, have the engine checked for possible leaks. 322