Follow these instructions:
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1) Delete both pairing between ur phone and the car.
2) Move the contacts u want into ur SIM card.
3) Download Nokia Contact Download Application from here http://europe.nokia.com/A4143881 and install it.
4) Run Nokia contact download application.
5) Pair ur phone with the car and wait 2min until the phone book on the SIM Card uploaded.

Hope this help