2004 Mercedes SL-Class Owner's Manual - Page 309

Practical hints What to do if ... Left display Right display Engine oil Visit workshop! Engine oil level Visit workshop! Possible cause It may be that there is water in the engine oil. The engine oil has dropped to a critical level. Suggested solution Have the engine oil checked. Check the engine oil level ( page 255) and add oil as required ( page 257). If you must add engine oil frequently, have the engine checked for possible leaks. : The measuring system is malfunctioning. When the message Add 1 qt engine oil at next refueling (Canada: 1 l) appears while the engine is running and at operating temperature, the engine oil level has dropped to approximately the minimum level. Have the measuring system checked by an authorized Mercedes-Benz Center. When this occurs, the warning will first come on intermittently and then stay on if the oil level drops further. If no oil leaks are noted, continue to drive to the nearest service station where the engine oil should be topped to the required level with an approved oil. ! The engine oil level warnings should not be ignored. Extended driving with the symbol displayed could result in serious engine damage that is not covered by the Mercedes-Benz Limited Warranty. 308