Volvo, I got a 07 W12 and the heated seats aren't working. Did you ever figure out the issue with yours? Also if you have any insight on how to fix mine I would appreciate the help.

Hi, i was wondering if you were ever able to complete the instrument cluster upgrade from narrow dis to widescreen dis. Thanks a lot.

I have been looking over your thread regarding heating problems on you A8L w12. I have an 05 with same symptoms and was wondering what you determined to be the problem? I see your last post pointed to "I'm definetly suspecting the valve unit." what unit are you referencing? Any help would be great!!

You don't need any security codes, or at least not with dealer's VAS5054 equipment i'm using (haven't got a VCDS cable for the A8, so can't test with that).

You just go into coding, and enter your coding
http://www.audi-portal.com/en/diagno...u_10602.html#1

There is the coding's list.

Your coding 12300 (=8192+4096+8+4) referrs to a W12 shortbody with heated windscreen and insulated glass, but no sunroof, rear climatronic, nor rear sunblind as the S8 usually has.

Hi Volvopentaman,

I am having difficulties with my Audi S8 2006 heating system. I saw a post (but can't find it) where you had teh coding for teh HVAC system. Mine is 012300 but I can't see how to change it or discover the meaning of my codes. I have VCDS, can you shed any light or tell me the security code for HVAC?

Thanks

Richard