When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
To the OP, do you drive with the sunroof opened? That could be the problem.
I've used all iPhone generations on two different ISFs and never had a problem with BT calls, try pairing a different phone than the one you have and test it, that way you can discard the phone or the car.
Hey guys this is a bit off topic and sorry to hijack the thread, but is it possible to stream music off your phone via bluetooth on ISF? Or can it only work as a phone?
Yes, BT audio works on my 2012. Not sure of earlier models.