DIY: [How-To:] Racing Seat airbag light fix

sixpax · 03-03-2013, 02:32 PM

Quote:

Originally Posted by gomer_110

A couple things I noticed when I was installing my Bride Vios III:

If your anal retentive like me and verify the 4.7 Ohms after it's soldered in place and don't be alarmed when it reads <1 ohm. There's something with the plug that makes it show up this way (wasted 2 resistors because of this).

Looking at the weight sensor pad it looks like a glorified strain gauge (as it stretches it increases resistance). The problem is the module attached to it. I would say with some certainty that if someone was to measure resistance on the traces at the pad to module connection that we'd be able to solve this whole weight sensor issue once and for all. Unfortunately I don't have the kind on money laying around to risk damaging mine. Now if someone wants to give me one to test this with then let me know (can't guarantee it'll come back in one piece though).

PM me your address I can pull mine out and send it ... sold my driver side seat but the pax side is just sitting in the garage collecting dust. Would take me a day or so to get it out of there (the pad) and mail it. Would I get it back ?

gomer_110 · 03-03-2013, 05:56 PM

Quote:

Originally Posted by sixpax

PM me your address I can pull mine out and send it ... sold my driver side seat but the pax side is just sitting in the garage collecting dust. Would take me a day or so to get it out of there (the pad) and mail it. Would I get it back ?

The plan would be to remove the white and black fabric off both sides of the pad to be able to follow the circuit traces. Would also need to scrub off the plastic covering off the traces at various spots to be able to take readings.

Assuming I'm right about the way the sensor is designed I would envision a small box containing the original control module, additional wiring, and a switch to enable/disable the airbag.

As far as getting it back: if it works then absolutely, if I can't figure it out then I'd still get it back to you the only thing would be that the fabric on both sides would be removed and the mat would have some exposed circuit traces on it.

Let me know if you're still interested.

Also just came across this: BMW & MB SRS Emulator. Obviously it's not spec'ed for our cars but for $20 it might be interesting to give it a shot and see what happens.

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