Why does the Besturn B50's alarm horn keep sounding?
2 Answers
Besturn B50's alarm horn frequently sounding may be caused by the following reasons: 1. Horn relay sticking causing continuous horn sound: This fault is easy to identify. Just locate the horn relay and when the horn sounds, gently tap the relay with a screwdriver or other tool. If the horn stops, simply replace the relay. 2. Internal sticking or short circuit in the horn switch: This can cause the horn to sound continuously. For this fault, you need to disconnect the horn switch wires to check if the switch is the cause. If it's caused by wiring issues (such as the horn wire connecting to the live wire), it will also result in continuous sounding.
I've encountered this issue many times before, especially with models like the Besturn B50, where the alarm horn keeps going off for no reason, which is really annoying. I've found that the most common cause is a faulty door lock sensor, particularly the rear door or trunk sensors failing to detect the closed state. The system then mistakenly thinks there's unauthorized entry and triggers the alarm automatically. Another possible reason could be unstable battery voltage causing the anti-theft system to malfunction, or aging wiring with short circuits and loose connections. Whenever this happens, I first check all doors and the trunk to make sure they're properly closed, then inspect the battery for corrosion or loose terminals. If that doesn't work, it's necessary to have a professional check the sensors or replace faulty components. Otherwise, random alarm triggers not only disturb the neighbors but could also drain the battery and affect driving safety. Don't ignore small issues - addressing them early saves a lot of hassle.
