Alarm going off randomly [Archive] - Bimmerfest - BMW Forums

: Alarm going off randomly

07-20-2012, 07:24 PM
Hi. Wondering why my cars alarm has been recently going off randomly. Usually the horn blows while lights are flashing. Today it happened, but no horn, just lights flashing! Heeeellllppp!

07-21-2012, 06:42 AM
Alarms going off randomly is usually a sensor problem. There are sensors on the hood, trunk, and all the doors. When mine was going off randomly, they checked the computer for fault codes and found a bad sensor on the hood. Replaced that and it fixed it.