Need answers on air bag light.

[fullthrottle52]

Originally Posted by Paul

What were the codes? The module seldom is the problem.

I didn't see the codes. The Indi said he could not read anything beyond the control module. Apparently it is placed in front of the cars computer and if bad you can't see codes. That is how you determine it is the air bag control module. This is what I am told. That is why I'm posting here to get some clarification before proceeding with a $1000.00 Bill.

I am trying to find out if I can just purchase this module and put it in whiteout reprograming the unit. Someone told me it has to be programmed to my vin number.

[mikefocke]

The issue can also be grounding and there is a TSB that was posted long ago that covers the repair. Porsche even issued a kit to do the fix.

My '01S had 4 trips to the dealer to get to where the lite was finally off. First two were seat belt, third was grounding, forth was grounding again with me being told that the zone guy had come up with a new procedure beyond the original TSB.

Fault codes for the airbag system can be read by those with the right equipment.

A writeup by Maurice and the original TSB are here.

Make sure your grounding is right before replacing the module.

Always when in for service insist that the codes be given to you. You may do nothing with them but the service tech will think you are watching and checking that what he is trying to sell you on doing makes sense. And posting them enables those on the forums to more accurately focus on what your problem might be.

[fullthrottle52]

Originally Posted by mikefocke

The issue can also be grounding and there is a TSB that was posted long ago that covers the repair. Porsche even issued a kit to do the fix.

My '01S had 4 trips to the dealer to get to where the lite was finally off. First two were seat belt, third was grounding, forth was grounding again with me being told that the zone guy had come up with a new procedure beyond the original TSB.

Fault codes for the airbag system can be read by those with the right equipment.

A writeup by Maurice and the original TSB are here.

Make sure your grounding is right before replacing the module.

Always when in for service insist that the codes be given to you. You may do nothing with them but the service tech will think you are watching and checking that what he is trying to sell you on doing makes sense. And posting them enables those on the forums to more accurately focus on what your problem might be.

Thanks for the information. I knew about the seat belt issue and so did my indi when I took it in. Before diagnosing the issue he said it was probably a seat belt latch needing replaced. I did spray electrical contact spray in the latch before taking it to be looked at to no avail. When the indi hooked up his computer to the ODB port, within a minute he said I suspect it is something besides the connector. He said the scan tool would not allow him to "see" beyond the air bag control module to get a code. He said cars are set up like that so that if the control module goes it let you know it by not being able to see beyond the module.

I may take it to the dealer to see if they get the same thing. What I'm really trying to find out is if I buy a "new never used" unit off of ebay, can you plug and play or does it have to be programed for my car? It looks like there is not a lot of information on this here. There are unused units and used units available for much less then the indi is asking. It looks like an easy access and change out if I just knew it could be replaced.

Thanks again for your info.

[fullthrottle52]

Can anyone answer if unhooking the battery for awhile and then rehooking back up will hurt anything. I am considering doing this to see if the air bag control module just needs a reset. I know it may be in vain but worth a try. I have the radio code so no issue there.

P.S. I have ordered the control unit from Porsche dealer and will have it installed next week.

[thom4782]

I can't answer your last question with 100% certainty, but I would find it shocking is simply disconnecting the battery for a long period, say 20 minutes to an hour, would cause permanent damage. I would think the lack of power may cause some loss of stored data, such as fuel mix settings, but things like these would reset over time and several drive cycles.

[JFP in PA]

Originally Posted by fullthrottle52

Can anyone answer if unhooking the battery for awhile and then rehooking back up will hurt anything. I am considering doing this to see if the air bag control module just needs a reset. I know it may be in vain but worth a try. I have the radio code so no issue there.

P.S. I have ordered the control unit from Porsche dealer and will have it installed next week.

It will not reset, so don't bother. You need a PIWIS or Durametric system to reset it.