Where is the dipstick on the S550 4Matic?

The dipstick for the S550 4Matic is located in the engine bay, typically toward the front of the engine on the driver's side. To access it, you may need to remove a cover or reach around other components, depending on the specific model year. Always ensure the engine is off and cool before checking the oil level. For precise location and access instructions, consult the owner's manual.