Help Me. Please.

[alsamrob]

I have an 04 CS with CDR23 and mObridge. I have had no sound from my car for a while. Tried all of the urban legends to stir the amp into life to no avail. Before I buy a new amp, I brought the pig into a local Porsche dealer to determine if it is in fact the amp, or SW/HW etc. The SA is telling me that they could not access the control modules of the vehicle to read any faults. They said they could not communicate with the car at all. Thought it might be the mObridge unit. This happened before as well when they had to enable CDC so I could install the mObridge.

My question is: is that even possible? the mObridge worked fine for 9 months, and the HU controls the Ipod fine when hooked up. Could the mObridge be blocking the communciation with the car, but the MOST be working fine in all other respects? Arrrggghh.

:angry:

[bigbuzuki]

Reconfiguring back to a stock setup by removing the MoBridge from the MOST loop would be good to try, but then you would need to reprogram via PIWIS for CDC disable. :o

I would be disconnecting main battery power for 1 minute and reconnect prior to doing anything more drastic. Hopefully this may reset your system.

[voodoocat]

Reconfiguring back to a stock setup by removing the MoBridge from the MOST loop would be good to try, but then you would need to reprogram via PIWIS for CDC disable. :o

I would be disconnecting main battery power for 1 minute and reconnect prior to doing anything more drastic. Hopefully this may reset your system.

This just happened to me last week.

Issue 1

When I got the (used) Cayenne, the original owner swapped the PCM with CDR23 from somewhere. (I bet he ebay'd the PCM)

I'm told that the CDR23 stores VIN, so it didn't match car (console/dashboard computer) VIN. The tech changed the console VIN to CDR23's and stereo worked. I'm told to make sure the tech won't change console VIN back to the car's VIN on subsequent services, or stereo will stop working again. Note, they forgot to set CDChanger bit on.

Issue 2

Installed Dension gateway, found out CDC bit is not set, so back to tech. Can't get to CDR23, apparently Dension was blocking access. I think they tried the bypass switch on/off, but can't get PIWIS to accessing CDR23. Took out Dension and tried again, CDC bit was set right away (matter of few minutes).

So I suggest to take out the Mobridge and have them enable the CDC, then put it back in. Note for Dension, the light goes from bose amp to Dension, from Dension to HU (as described in manual)