- Faulty Horn Switch: The horn switch on your steering wheel may be faulty, causing it to make contact with the high-beam switch or wiper controls when pressed. This can result in the high beams and wipers activating simultaneously.
- Electrical Short: There might be a short circuit in the wiring harness that connects the horn switch, high-beam switch, and wiper controls. This can cause unintended signals to be sent to these components, leading to their simultaneous activation.
- Faulty Relay: The relay responsible for controlling the high beams or wipers may be faulty, causing it to activate both functions when the horn is pressed.
- ECU Software Glitch: In rare cases, a software glitch in the car's electronic control unit (ECU) may cause the high-beam and wiper functions to become linked to the horn.
To diagnose the exact cause of the problem, it is recommended to seek assistance from a qualified automotive electrician or visit an authorized Volkswagen service center. They can properly inspect the electrical system, switches, relays, and ECU to identify and fix the issue safely and effectively.
