airbag fault in 2004 cayenne turbo

[turboFF]

Hey. I'm new to this forum and owner of a Cayenne turbo 2004., I have had the airbag yellow warning light on since I replace the battery. I didn't receive any error code. And I follow the previous post on this forum tried to use the PIWIS to erase the faulty memory, it didn't work though. And I also tried to disconnect the battery, but the light still on. I bought a Maxicheck(it's more direct and easy for me to use than PIWIS) to detected where is the problem which shows control module faulty 3 and belt tensioner, passager's side, rear 4BC. also the actual value shows almost everything is "too big". So my question right now is does it means my control unit need to be replaced? And if I replace it use the used parts do I still need to do the "locking steps"(I saw people talking about the airbag lock in other post). English is my second language hope I can get everything explain well. Thanks for your help.

Edited August 3, 2016 by turboFF

[JFP in PA]

Unfortunately, I have no idea what "too big" means.  You need to scan the car with a Porsche specific tool, such as the PIWIS or Durametric software.  Porsche vehicle's use unique diagnostic logic that often confuses aftermarket diagnostic tools an leads to erroneous codes, and often completely misses real codes as well.

[clarksongli]

Agreed with JFP in that I'm always a little concerned with generic scanners.  they give really vague and usually wrong info haha.

 

But anyways, my guess is either your seats have not received the "airbag resistance" fix, or they have and the connections are a little loose.  The airbag reset is stored in the NVM so simply removing power will not reset the light.

 

You will need a durametric for that.  Underneath each front seat you should see the following.  I could see mine from the rear with a mirror.  if you have only the connector and no splice then you need to get that recall done(dealer should do it for free).  if you see the splice, then it means the connection isn't 100%.  either solder them, or you can try recrimping them.  Reset the airbag and see if it comes back

 

http://forums.pelicanparts.com/uploads17/955_airbag_conn_zoom_free1271277240.jpg