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E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

 
 
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Old 12-18-2010, 05:07 PM
ztom's Avatar
ztom ztom is offline
I gotta have more cowbell
Location: Thousand Oaks CA
 
Join Date: Sep 2007
Posts: 855
Mein Auto: 1997 528i
air bag light reset - was drivers belt buckle

Here's what I found, may help others.

>Bag light came on (actually on car start goes on as usual, but blinks off then stays on in this case)
>Bought a Peake R5/srs code reader, very easy to use
>Code was drivers belt buckle. Read on other posts this is a common fault. (The other common fault apparently is the passenger side mat in the seat that detects a person
seated.)
>Of course want to not have an issue but fyi read that when there is a SRS fault the system will tend to favor keeping the system active.
>Read that in an accident the buckle will drop down to take up slack. Read on auto parts site (Pelican?) that this assembly has compressed nitrogen. I guess that when released (maybe by a pyro charge?) it pulls the buckle down. I think the issue is the buckle has a switch that senses when the buckles in and over time the switch gets faulty?

>I cleaned the buckle with a spray can of contact cleaner and small tube. Also bent the buckle over and tapped it to try to shake out any dust/sand/lint.
>Reset the SRS and the fault has not come back (yet?). Next time I have time I'll replace it. Heard it is an easy job.
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