I recently bought a used BMW 1990 525i. The dealer's swapped the car battery for me, and now my radio went to anti-theft mode. Two BMW service centers have been unable to help me, but I have high hopes for this board -- any help is appreciated.
Car: BMW 1990 525i VIN: WBAHC1305LBC90501 Radio model: Pioneer KE-83ZBM FCC ID: AJD4DIKE-83ZBM Serial number: PJF0139025