On vehicles with a 12-cylinder engine, the oil level can be checked using the on-board computer. On all other models, the dipstick must be used to check the engine oil level.

Example: vehicles with a gasoline engine

Example: vehicles with 4MATIC

Park the vehicle on a level surface.

To check the oil level with the engine at operating temperature, switch the engine off and wait for approximately five minutes.

Pull oil dipstick 1 out of the dipstick guide tube.

Wipe off oil dipstick 1.

Slowly slide oil dipstick 1 into the guide tube to the stop, and take it out again.

If the level is between MIN mark 3 and MAX mark 2, the oil level is correct.

If the fuel level has sunk to MIN mark 3 or below, add 0.55 to 1.1 US qt (0.5 to 1.0 l) engine oil.