You may want to subscribe to alldatadiy.com which has most of the service diagrams and part locations for your car . On my C230 1998 the fuel filter is under a removable cover underneath the car near the fuel tank going toward the front of the car , on the right side I think . Also , I finally found a Haynes service manual for the car on Amazon which helps a lot .
If its the same as the C240...The cabin air filter is located over the battery
how do i check oil level on Mercedes c240 2001
It is mounted on the upper front of the engine. It is a canister type.
My data is showing two locations for the cabin filter on the C240 MY 2004 RHD & LHD behind the glove box & below the windscreen on the passenger side.
fram ch8481 wix 51226
The fuse for the wipers in a 2002 Mercedes c240 is located on the fuse panel, that is located on the driver's side engine compartment. The fuse number for the wipers is 46.
The fuel filter on a 2002 Mercedes C240 is located on the driver's side just inside the wheel well. Not in the wheel well, but just beyond it. If you have the car on a lift, you can't miss it. It's fairly large in diameter and there are 3 hoses going to it. You will have to replace the clamps on it because they are the type you have to break in order to change it.
The parts number A1402701365 for a Mercedes C240 is for the parking lever.
Where the fuse box located
http://www.installuniversity.com/mb/w203/w203/fp.html
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
On my c240 2001 car amplifier is located in the trunk on the right side (passender side of the vehicle) behind the carpet.