Audio System Without Navigation

B2670
Anti Theft Error.

Fault symptoms
The following information is shown on SID:
^ B2670: RADIO LOCKED (main unit)
^ B2670: RADIO CODE (main unit).

No sound at all.

Conditions
B2670
^ The main unit receives theft protection information over the bus from DICE and TWICE. If the theft protection information is incorrect, diagnostic trouble code B2670 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 B2670 will be generated.

Diagnostic help
See Before changing a control module