9.0.2 Bluetooth Car HandsFree Problem

I have a Nissan Qashqai, and have never had a problem with any software update, or iPhone, in relation to using my bluetooth handsfree kit in my car. (The built-in version, 'Nissan Connect' - not a 3rd party handsfree system).

However, when updating to 9.0.2 my phone has disconnected from my bluetooth handsfree, and in bluetooth settings, it can't even find the car! (So no manual re-connect can be achieved).

Not quite sure how/why this has happened, but it's a first for me, certainly. Has to be the 9.0.2 update as it was fine before on 9.0.1.

Apple - please provide a fix for this ASAP, as it's driving me mad. No pun intended.