2007 Mercedes R-Class Owner's Manual - Page 459

Practical hints What to do if ... Display symbol Display message Check eng. oil level at next refueling Possible cause/consequence Possible solution The engine oil level is too low. The engine oil level is too low. Check the engine oil level ( page 366). Add engine oil ( page 369) and check the engine oil level ( page 366). N USA only: Add 1 qt. engine oil at next refueling Canada only: Add 1 liter engine oil at next refueling Engine oil level cannot be measured The measuring system is malfunctioning. Have the measuring system checked by an authorized Mercedes-Benz Light Truck Center. When the message Add 1 qt. engine oil when next refueling (Canada: 1 liter) 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. 458