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  BMW Forums » BMW discussion forums » BMW Z-Series
  Alarm sets itself off

 Alarm sets itself off



My alarm likes to set itself off now for no apparent reason... there is no rhyme or reason to it.

Lock car with keyfob, walk away, wait X minutes(sometimes instant, sometimes hours), alarm goes off!


Anyone know what the common causes for this might be? I may just start disconnecting sensors.
   Reply » Alarm sets itself off

this is the infamous hood button giving up the ghost. It's located on
the radiator header on the driver's side.

Get a new one, disconnect it, or screw a rubber bumper onto the pad on the hood above it to make it depress the sensor farther.

   Reply » Alarm sets itself off

Quote:
this is the infamous hood button giving up the ghost. It's located on
the radiator header on the driver's side.
That's what I figured from the other posts I saw but I haven't had a chance to look at it yet.

The alarm still arms, but it goes off randomly.

   Reply » Alarm sets itself off

Quote:
this is the infamous hood button giving up the ghost. It's located on
the radiator header on the driver's side.

Get a new one, disconnect it, or screw a rubber bumper onto the pad on the hood above it to make it depress the sensor farther.
This is what happened to mine as soon as I installed it. Yes, it was the hood switch. Mine was replaced under warrantee and the dealer told me that it was a new part that superceded the old one.

   Reply » Alarm sets itself off

This happened on my car as well. It was a faulty hood switch that made the alarm go off by itself.

   Reply » Alarm sets itself off

i ripped my hood switch out for now, seems to have solved it

thanks


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