Audio System Without Navigation

B2785
Anti Theft Error - Wrong Car Enviroment

Fault Symptoms
RADIO LOCKED shown on SID.
There is no sound from the speakers.

Conditions
The main unit receives theft-protection information over the bus from DICE and TWICE. If the theft-protection information is not correct, diagnostic trouble code B2785 will be generated.

If theft protection is programmed into the main unit (marriage or divorce) without DICE and TWICE being on the bus, diagnostic trouble code B2785 will be generated.

Diagnostic help
See Changing the audio system as found under Replacing the Main Unit In the Audio System.