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Old 01-08-2012, 04:19 AM   #5
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Originally Posted by cooljess76 View Post
In the event of an accident, will the passenger seat latch retracting mechanism still retract and lock and will the passenger airbag still deploy? If so, thumbs up.
I was looking into that too and it appears that E36s up to 3/97 build (mine) had a mechanical pretensioner. I'm not exactly sure how it works, but there is a cable coming out of the mechanical unit which I think triggers it.

I'd say if anyone has a 4/97 build and later, more research needs to be done on how the pyro charge activates. The Bentley wiring diagram seems to show the buckle switch and pyro charge circuits are seperate, but who knows.

I attached a BMW Service Bulletin which addresses these faulty buckles. In there they talk about mechanical and the newer pyrotechnic pretensioners.
Attached Files
File Type: pdf SRSLightBeltBuckle.pdf (113.3 KB, 151 views)

Last edited by CirrusSR22; 01-08-2012 at 04:46 AM.
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