The fuse for the horn is located in the driver side fuse box under the hood and if u have a fuse chart it's a 15 amp fuse and it goes in slot #43. If you don't have a chart if u r facing the driver side of the car and looking directly at the fuse box it's the fuse in the top left corner and it's a blue 15 amp fuse. The fuse underneath it should be a red 7.5 amp fuse. I hope this helps because it took me a while to figure it out.
Where is the fuse box in the 2002 Mercedes Benz s430
The 2002 Mercedes-Benz G-Class has a V8 engine.
The 2002 Mercedes-Benz M-Class has a V6 engine.
The 2002 Mercedes-Benz SL-Class has 24 valves.
The 2002 Mercedes-Benz E-Class has a V6 engine.
The 2002 Mercedes-Benz S-Class has a V8 engine.
The 2002 Mercedes-Benz G-Class has 24 valves.
The 2002 Mercedes-Benz CL-Class has a V8 engine.
The 2002 Mercedes-Benz SLK-Class has 16 valves.
The 2002 Mercedes-Benz C-Class has 16 valves.
The 2002 Mercedes-Benz S-Class has 24 valves.
The 2002 Mercedes-Benz E-Class has 18 valves.