Its probably a fuse, there are 2 fuse boxes. one is under the hood on the drivers side towards the rear, and the other if inside, once you open the drivers door on the left side of the dash, (only visible with drivers door open) I have seen a horn go back and blow the fuse, so make sure to check amp flow before replacing the fuse.
On my c240 2001 car amplifier is located in the trunk on the right side (passender side of the vehicle) behind the carpet.
how do i check oil level on Mercedes c240 2001
One
it is located on the side of the transmission
Bring to dealer for repair
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.
there is no dipstick for the c240 if your lucky enough to have one it will be located towards the back of the engine cover on the passenger side
Where the fuse box located
http://www.installuniversity.com/mb/w203/w203/fp.html
1 for each cylinder. 6. (Corrected from 4 I said originally...although i think some years the c240 was 4 cyls just like the c230...but most ads say 6). There are two plugs per cyl. in a 2002 C240.
the pcv valve on all vehicles is right next to the intake manifold
it is inside the gas tank There isn't one they stopped using them, you have to check it in the car use your display screen.