All parts › BMW M4 CSL › Electrical system › Horn
Horn
Part of Electrical system · about $90 to replace
What it is
Twin-tone electric horns behind the bumper.
What it does
Warns other road users.
How it fails
Corroded terminals; check the relay first.
| Material | Steel diaphragm, copper coil |
|---|---|
| Spec | 110 dB |
| 400/500 Hz |