Horn — Horn circuit BMW 1 series F20/F21
All systems — 34 systems
- Air conditioning
- Anti-lock brakes
- Anti-theft 2
- Body control modules
- Computer data lines
- Cooling fan
- Cruise control
- Defoggers 2
- Electronic power steering 2
- Electronic suspension
- Engine performance 3.0l
- Engine performance 3.0l turbo
- Exterior lights 2
- Ground distribution
- Headlights 3
- Horn
- Instrument cluster
- Interior lights 3
- Memory systems 4
- Navigation 6
- Power distribution
- Power door locks
- Power mirrors 4
- Power seats 6
- Power top/sunroof 2
- Power windows
- Radio 7
- Shift interlock
- Starting/charging 2
- Supplemental restraints
- Transmission
- Trunk, tailgate, fuel door
- Warning systems
- Wiper/washer
