Where is the horn relay on an Audi A4?

The horn relay on an Audi A4 is typically located in the fuse box, which is usually found beneath the dashboard on the driver's side or in the engine compartment. To access it, you may need to remove a cover to reveal the relays and fuses. The specific position of the horn relay can vary by model year, so it's advisable to consult the owner's manual for the exact location and identification.