I have paired my Sonyericsson P1i with my X5 2006 using the same procedures described in previous post. For the first pairing attempt, the P1i connected then disconected, I tried again it connected and disconected again. Then, I switch off the car and switch on again, after about a minute the phone automatically connected and the red LED on MID went off. So, it is working.

I dit the same with my wife's Sonyericsson M600i and it worked.

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2006 X5 3.0 Premier Package, 40K miles
2007 X5 3.0, 10K miles