[Kolenka]

agreed.

delete the phone from the headunit and repair using the bluetooth audio option... or, whatever it's called.

report back and we can try to help further.

joel

Yup, do this. You need to do it on both the phone and the head unit. The issue is partly that your iPhone 5 "remembers" the pairing, but the head unit doesn't recognize your iPhone 5 (different device). You have to re-pair from scratch.