The battery went down on my 1991 BMW 525i after having sat for a year; over which time I replaced the factory radio with an aftermarket stereo. After charging the battery, I have found that the car is immobilized mode with the alarm sounding. I have tried entering a 4 diget code in the OBC to disarm the alarm but it will not reset. I've even tried disconnecting the battery and touching the cables together for 30 seconds, but to no avail. I would rather do away with the alarm system all together. Can someone please tell me how to either remove of reset the system PLEASE!
Sunday, October 21st, 2012 AT 3:46 PM