The horn on my 1997 mercedes is not working which

What I do to check a horn is first to run a heavy wire directly from the battery positive terminal to the horn's connector. Most often the horn gets its ground from being bolted to the car so there is but one connector. On a Benz though who knows, you may have more than one terminal and you will have to deduce which one is for the +12VDC. Benz battery may be under the rear seat or in the trunk instead of under the hood like on a real car. Anyhow if you can find the horn and the battery and the horn sounds with a direct connection then you know the problem is the switch, or horn relay, or fuse. I will bet that a Benz tech will have to pull the steering wheel off with a special tool but you could most likely get at the relay and fuse yourself. If you replace the relay and fuse and still no horn then surrender the car and all your credit cards to a dealer. Pull the fuses out one by one and hold them up to a light to see if one is blown. On a real car usually there is a map or key stamped into the cover of the fuse box telling you what fuse or relay is for which gadget.





If the horn sounds then you