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Alarm keeps on going off

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Old Nov 18th, 2009, 17:26   #1
Matt Wright
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Default Alarm keeps on going off

Much to the annoyance of the neighbourhood my car alarm goes off at 03.00 am every morning.

Volvo has fitted a new mass movement sensor and adjusted the sensitivity but still the problem persists.

It is not passing traffic, animals or human interference setting it off.

Any ideas what could be wrong?
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Old Nov 18th, 2009, 17:37   #2
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Could it possibly be windy and an airfreshener hanging off the mirror, a friend of mine had this problem in i his Galaxy, he came out to find the air freshener swinging slightly, removed and hasn't happened since
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Old Nov 18th, 2009, 20:02   #3
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Heavy rain used to do it for me.
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Old Nov 18th, 2009, 20:39   #4
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Quote:
Originally Posted by Matt Wright View Post
Much to the annoyance of the neighbourhood my car alarm goes off at 03.00 am every morning.

Volvo has fitted a new mass movement sensor and adjusted the sensitivity but still the problem persists.

It is not passing traffic, animals or human interference setting it off.

Any ideas what could be wrong?
there are 2 MMS,one front and one rear,have they replaced both ? as they are upgraded for this fault
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Old Nov 19th, 2009, 18:26   #5
Matt Wright
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Problem was a crack in the casing to the Central Electronics Module (CEM). Apparently this is a common defect and Volvo replaced under warranty even though my car was outside the Manufacturers Warranty.
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Old Nov 19th, 2009, 23:30   #6
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Quote:
Originally Posted by Matt Wright View Post
Problem was a crack in the casing to the Central Electronics Module (CEM). Apparently this is a common defect and Volvo replaced under warranty even though my car was outside the Manufacturers Warranty.
strange one that,worked for Volvo for many years,thats new to me !

anybody else had this problem ?
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