Does this phone have Bluetooth PBAP (Phonebook Access Profile)?
Because my Pioneer Car Unit is refusing to accept contacts transfers from my 5800XM.
My previous Sagem phone and also my wifes Motorola both happily transferred contacts to the Pioneer unit.
Here's the list of all the BT profiles supported by the 5800, in alphabetical order:
Audio Source
AVRCP Controller
AVRCP Target
Dial-Up Networking
Hands-Free Audio Gateway
Headset Audio Gateway
Imaging
Nokia OBEX PC Suite
Nokia SyncML Server
OBEX File Transfer
OBEX Object Push
Phonebook access PSE
PnP Information
SIM Access
SyncMLClient
It looks like phonebook access is there (it's the 4th from the bottom), at least in the Phonebook Server Equipment (PSE) role. Does your car unit also need the phone to support the Phonebook Client Equipment (PCE) role, and, if so, why?