2005 Mercedes C-Class Owner's Manual - Page 323

Practical hints What to do if ... Display symbol Display messages Engine oil level Visit workshop. Possible cause The engine oil has dropped to a critical level. Suggested solution Check the engine oil level ( page 280) and add oil as required ( page 281). If you must add engine oil frequently, have the engine checked for possible leaks. : Oil sensor malfunction Visit workshop. The measuring system is malfunctioning. Have the measuring system checked by an authorized Mercedes-Benz Center. When the message At next gas station add 1.0 qt engine oil (Canada: 1.0 l) appears while the engine is running and at operating temperature, the engine oil level has dropped to approximately the minimum level. When this occurs, the warning will first come on intermittently and then stay on if the oil level drops further. Visually check for oil leaks. If no obvious oil leaks are noted, drive to the nearest service station where the engine oil should be topped to the required level with an approved oil specified in the Factory Approved Service Products pamphlet. ! 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. 321