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Old 07-06-2017, 09:27 AM   #1
TrentW
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Help-alarm going off after mirror upgrade

Did the homelink/compass/auto dim mirror upgrade on our 2005 325xiT, pulled #4 & #7 wires, everything works, but alarm will activate randomly for no apparent reason.

Anyone have this issue that can help?
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Old 07-06-2017, 10:15 AM   #2
cvx5832
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Quote:
Originally Posted by TrentW View Post
Did the homelink/compass/auto dim mirror upgrade on our 2005 325xiT, pulled #4 & #7 wires, everything works, but alarm will activate randomly for no apparent reason.

Anyone have this issue that can help?
Was that a mirror for a convertible?
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Old 07-06-2017, 02:19 PM   #3
scottjoh
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Quote:
Originally Posted by cvx5832 View Post
Was that a mirror for a convertible?
What does that have to do with the alarm tripping for no apparent reason?

Quote:
Originally Posted by TrentW View Post
Did the homelink/compass/auto dim mirror upgrade on our 2005 325xiT, pulled #4 & #7 wires, everything works, but alarm will activate randomly for no apparent reason.
Lots of people will start chiming in with various problems they have had with alarm trips like hood switch, trunk wiring, tilt sensor, but, none of that really helps you in your case. You need to find out which input to the alarm is causing the alarm trips. If you have a computer with INPA, PA Soft, Car Soft, GT1/DIS, ISTA/ISIS or any one of the other diagnostic systems for BMWs connect it up to your car and read the fault codes for the ZKE module, also known as the body control module or general module. This module does the alarm function in your car and stores the cause of the alarm trip and the number of occurrences. If you are using PA Soft it will not tell you the number of occurrences so you won't be able to tell the difference between an alarm trip that happened once 10 years ago and your current alarm trips which have occurred dozens of times. All the other tools listed will give # of occurrences. If you use PA Soft you need to clear the fault log and after the alarm trips again read the modules to see what popped up.

Last edited by scottjoh; 07-06-2017 at 02:27 PM.
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