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Old 09-05-2009, 08:34 AM
cagoguy's Avatar
cagoguy cagoguy is offline
Hawks RULE!
Location: Chicago, IL
 
Join Date: Feb 2006
Posts: 1,166
Mein Auto: '07 e60 530iA
Before making any assumptions and shelling out $$ on an interior sensor, try disabling the under-hood sensor. It's a hugely common problem on E39s.

Lots of discussion on it here:

Hood Sensor / Alarm issue

Try pulling the plug. See if the alarm still goes off randomly. This doesn't affect your main door/interior alarm sensors in any way.
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2007 e60 530iA - Jet Black / Black Dakota - Premium - STEP - Cold - Sirius - 24k mi - CPO

2003 e39 530iA - SOLD @ 93k miles.
1997 e39 528iA - SOLD @ 145k miles.
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