1. 2004 330 has HK radio, software problem with stereo (FM) going from mono to stereo, dealer will replace receiver, did on mine, all fine now
2. Rear window defroster FM transmission problem, known issue, take to BMW, is a cross wiring problem, they will fix it
2. Rear window defroster FM transmission problem, known issue, take to BMW, is a cross wiring problem, they will fix it