Anderson

If this is your problem: Electrical fault in electric circuit (based on wiring between airbag triggering unit and airbag sensor; probably a short circuit to B+ or a short circuit to ground)

(2137-Battery Disconnection relay) on my diagnostic tool Icarsoft Por V2.0) 

I had this problem on my Cayenne S 2005 some months a go. I needed the airbag light to go away before sending the car for inspection, MOT in UK, and car Besiktning here in Sweeden. I literally checked all my airbag connections, wiring and looked for corrosion on the chassis. It took me quite a lot of time and as a result I found nothing out of the ordinary.

I visited every forum  on the web related to Airbag faults but couldn’t find a single post that would help me locate where the short could possibly be coming  from. 
Then I decided to Ieave my car at Porsche Gothenburg for diagnostic. They worked on my car for two hours and told me that the airbag relay sensor needed to be replaced and they wanted to order one for my car, but they weren’t sure if it would solve the problem once replaced… I decided to bring the car back home and experiment myself instead of paying the dealer to do it and expend a lot of money without been certain that the problem would be solved.

I went on ebay and got myself a secondhand one and replaced it. Nothing changed, even replaced all relays on B+ circuit just to be sure, nothing… so the problem wasn’t the relay itself (the magical moment when you loose hope and are almost giving it all up) So I decided to wrap it up for the day and probably forever lol, that’s when I paid attention to a no airbag related issue-thread that I overlooked while doing my  search . The thread talked about the B+ circuit and it’s wiring and how dull it was that all Porsche Cayenne’s cables passes under the drivers seat in order to reach the fuse panel under the  hood, and how it frequently causes short circuits due to cable corrosion. That’s right, the water from our shoes during rainy or snowy days can get to the cables and after some years, it turns the affected wires literally in to dust.

Eureka! Bingo! 
So I rushed and lifted the carpet under the drivers seat and under the pedals… didn’t take long to see a broken black wire flying around… I followed the wire and realized that the black wire’s other half was connected to the airbag relay sensor’s conector, so I soldered the wire back together and when I reconnected the battery , the dash’s airbag warning light was gone! 
 

Hope it helps!

Here we have some pictures to better understand what we have discussed:

On 5/8/2014 at 4:19 PM, Alexander Tobiasson said:

Hey. I'm new to this forum and owner of a Cayenne S V8 2004., I have had error code 1217 and remedied this by soldering the cables, everything worked fine for 1 month. Now I have received error code 1738 sensor for airbag (driver), and seat occupancy, passanger - too big and Resistance battery open circuit. Are there more connections under the driver's seat that can cause a short circuit? I can not delete the error code ... it comes back right away?

All the best / Alex from Sweden

Hi Alexander, I’m also from Sweden, have you fixed the airbag light problem on you Cayenne? I had a quite similar problem myself last month and today my headache was finally over. Do you still own your car? Let me know if you are interested and I can share my experience and how I found the problem to be fixed.

kind regards 

Anderson 

Same problem here but instead its my rear hatch, the boot door that displays as if wasn't closed but it is and a beep that goes off quiet often...hope somebody can help us! 

On 3/12/2015 at 4:41 AM, rsfeller said:

Looking at couple 2006 Cayanne S in my area...all have the CDR23 with Boss and thus fiber MOST. 

 

Read 101 painful posts on expensive fiber converts and to be honest I cannot remotely understand what product to buy from those supplies with their compliated and messy websites (MOBRIDGE, DENNSION, etc).

 

So poking around on ebay because a buddy put a China Nav unit in his 2010 Vw Sportwagen and I"m seeing several units on there in the $500-800 range and all claim something like this...

 

1.If your car come with the BOSE optical fiber system, you need to pay 25USD for the extension cord.If your car come with BOSE, please contact us after your order!
2. Please make a note and tell us wether your car come with the bose optical fiber amplifer or not after your payment,thank you very much!

 

One shows something called a CAN-BUS adapter included...is the analog or digital to fiber conversion maybe?

 

Anyone took the plunge or read a good article on anyones experience?

 

Thanks for constructive comments!

Hi! Is this unit a Android 4.2 Jelly Bean? I am desperate after the Update and mcu files , my unit can only get into system recovery but does not boot. I brought mine in 2015 from a shop on Ebay that does not answer my emails, so as this units for Porsche are so exclusive it is quiet hard to find any information... If you have it could you please send it to me on andylima@me.com  Thank you! Kind regards  Anderson Lima