Well I got the parking brake mulfunction today too. I am a little over 7000 miles. I managed to manually disengage it but the next time I tried to drive off, I could only drive in reverse. When I switched to D to drive forward, the car would not move and the gear would switch to P by itself.

Anyway I had it towed and they are checking things now. While waiting I spoke to a tech and he confessed that it is a known software issue and that they are expecting a fix by May. What they will do is reset it for now.

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07 X5 3.0si - 06 330i