1. Turn off the engine and allow it to cool: Ensure that the engine has completely cooled down to avoid any accidents or burns.
2. Locate the underbody shield (if equipped): Some S500 models may have an underbody shield or pan covering the underside of the car. If present, you'll need to remove this shield to access the oil filter. Consult your owner's manual or refer to specific guides for removing the underbody shield.
3. Find the oil filter cap: Once the underbody shield is removed or if there isn't one, look for the oil filter cap. It's usually a cylindrical or circular-shaped part with Mercedes-Benz markings. It may be located on the top or side of the engine.
4. Remove the oil filter cap: Use a wrench or by hand (depending on the design) to loosen and remove the oil filter cap. Be prepared for a small amount of oil to spill, so have a drip pan or rag ready to catch any drips.
5. Take out the old oil filter: Once the oil filter cap is removed, you'll see the oil filter element inside. Grasp the filter and gently twist it counterclockwise to loosen and remove it. Again, have a drip pan or rag ready as some residual oil may drain out.
6. Replace the oil filter: Before installing the new oil filter, ensure the gasket or O-ring is properly seated on the new filter. Lubricate the gasket or O-ring with a thin layer of new oil. Screw the new filter into the housing by hand until it's snug, then tighten it an additional 1/2 to 3/4 of a turn using a wrench. Avoid over-tightening.
7. Reinstall the oil filter cap: Once the new filter is in place, replace the oil filter cap and tighten it securely.
8. Replenish the engine oil: Locate the oil fill port on the engine (usually marked with an oil can symbol). Remove the oil fill cap and add the appropriate amount of new engine oil as specified in your owner's manual. Replace the oil fill cap.
9. Start the engine: Start the engine and let it run for a few minutes to circulate the new oil throughout the engine.
Remember, this is a general guide, and the specific steps and locations may vary slightly based on the model year and engine type of your S500. Always refer to your owner's manual or consult with a qualified mechanic if you have any doubts or need further assistance.