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Where is the horn relay located on a 2010 Mazda 3?

The horn relay is located in the engine compartment fuse box. To access the engine compartment fuse box:

1. Open the hood of the vehicle.

2. Locate the engine compartment fuse box. It is usually located near the battery.

3. Remove the cover of the fuse box.

4. Locate the horn relay. It is usually labeled "HORN."

5. Remove the horn relay by gently pulling it out of its socket.