What are the reasons for the BMW car alarm continuously sounding after parking and locking?
2 Answers
There are several main reasons why the BMW car alarm keeps sounding after parking and locking: 1. Door status: Check whether doors, trunk and engine hood are properly closed, as unsecured doors may trigger the vehicle alarm. 2. Alarm sensitivity: Another possible reason is the excessively high sensitivity of the anti-theft device, causing it to sound the alarm with slight vibrations. Simply lowering the sensitivity of the anti-theft device can resolve this. 3. Circuit malfunction: Problems with the wiring of the anti-theft device's main unit can also cause the alarm to sound, requiring timely inspection, repair or replacement.
I've been driving a BMW for several years, and the alarm going off constantly is a common issue. It's usually because a door or the trunk isn't closed properly, triggering the sensors. It could also be that the hood isn't locked securely or has some play. Digging deeper, BMW's system is highly sensitive; the tilt sensor can detect body movement, such as when parked on uneven ground or during strong winds, leading to false alarms. When the key fob battery is low, the weak signal might make the system think it's an unauthorized entry, setting off the alarm. The solution is straightforward: first, manually check if all doors and covers are shut tight; if that doesn't work, replace the remote battery; if it still goes off, try disconnecting the car battery for a few minutes and then reconnecting it to reset the system. If it keeps happening, it's best to visit a professional shop to avoid draining the battery and being unable to start the car or dealing with nuisance alarms. For prevention, park on level ground, replace the key battery regularly, and small details can prevent big problems.
