Anyone's alarm randomly going off?

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wthammett

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Just recently I had the alarm go off on the car outside in front of my house - it never goes off but figured, maybe a motorcycle or something rumbled by. Few days later the alarm goes off while sitting inside the garage with the door closed...anyone else experience this? Thanks
 

ktm525

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Hood latch sensor. Disconnect it and short (connect) the terminals with a paper clip, wrap in electrical tape. If the problem disappears you have your answer. Leave as is or buy new sensor.
 

kdegLR4

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we had a similar issue but due to the sensor in the driver's door having cracked and shifted
 

Bm7b5

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Same as KTM525. Mine was going off at random times, with no rhyme or reason (3 in the morning). Jumped the passenger side Hood latch sensor with a paper clip and promptly forgot about it.
 

churious

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Its your hood sensor. I replaced mine instead of jumpering.
 

remember5

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Agreed, hood latch sensor needs to be replaced.
 

toddjb122

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I chased this on my LR3 as a hood latch sensor for a long time. I used the shorted out pins hack... seemed to work for a while. Then didn't. So I replaced the sensor (which is very easy to do). Originally it may have been the hood sensor, but then it was clearly something else...

...started happening again. After a lot of investigation and trial and error, it ended up being one of my rear door sensors. I had to really slam the door to get it to close good and I think it would sometimes relax just enough, based on temps or random acts of God, and my alarm would go off in the middle of the night. I usually keep my car unlocked in the garage so I never noticed it, but started to see evidence of this happening at work and also hear it when on vacation with the LR3 parked in the driveway as it woke everybody up in the middle of the night.

I never had issued locking my car or had errors about doors ajar. But that was it.
It was a door that was involved in an accident and things were either not put back properly or damaged parts not replaced by the body shop that was fixing my rover "as good as new, man! nobody will know the difference!"

Good luck. And yes, start with the hood latch sensor. That's the easiest.
 

remember5

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Thanks, toddjb122, I would have never have guessed a door would cause that also. I love this forum.
 

toddjb122

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Thanks, toddjb122, I would have never have guessed a door would cause that also. I love this forum.
Yeah, no worries.

I was my mechanic that suggested it once I noted that I sometimes had to close that door extra hard. He suspected it was the sensor, as he'd replaced them before, but when he got inside the door he saw the mess left in there by the body shop and they were clearly the cause.
 

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