Only suggestion about Bluetooth and Volvo I can offer is to
be sure to run the latest updates for the Volvo equipment.
As for bluetooth transfer between iPhones or iPhone and MBP,
this is not a feature of iphone, iPad or iOS, never has been.
Bluetooth is supported for stereo headsets/speakers, handsfree
telephone devices/headsets, some keyboards,
some peer-to-peer apps from the app store and internet tethering
where provided by the carrier.
Other than this it will not connect to a phone/computer/device.
(thanks to ckuan for the wording)
You are correct in your understanding - there is no bluetooth
file transfer between iPhones or iPhone and other cellphones or
Car bluetooth is tough to diagnose. I can connect to a Nissan Rogue
with both iPhone 4 & 5 while the car's owner cannot with his iPhone 5.
Perhaps the Volvo fora/discussion boards might offer a clue.
Thank you for the feedback. And hope you get the iPhone and Volvo
to work together.