From inside the trunk.
Check out the related link for a DIY article including pictures on how to replace the cabin air filter on your Mercedes Benz.
To change the air filter on a 2003 Mercedes-Benz SLK 320, first, locate the air filter housing on the engine. Remove the screws or clips securing the housing cover, then carefully lift it off. Take out the old air filter and replace it with a new one, ensuring it fits snugly. Finally, reassemble the housing cover and secure it with the screws or clips.
take it out, buy a new one and put it in
It should be right on top of the engine in the front behind the radiator and fan Its has a black cap that you swrew off and and you just pull out the filter. It's extremely easy to replace
The cost to replace a radiator in a Mercedes Benz C230 will depend on the cost of the labor, parts, and the year of the vehicle. The radiator costs approximately $124.50 for a 2003 model.
The fuel filter is under the car you have to remover the plastic cover under the car to get to the fuel filter.
The 2003 Mercedes-Benz S-Class has a V8 engine.
The 2003 Mercedes-Benz SL-Class has a V8 engine.
The 2003 Mercedes-Benz CL-Class has 24 valves.
The 2003 Mercedes-Benz CL-Class has a V8 engine.
The 2003 Mercedes-Benz G-Class has 24 valves.