Ios 8.1.3 Audi - call history contacts not synced

Hi all,

i have an Audi A6 2010 and an Iphone 6 on IOS8.1.3, it seems since the software update my car can no longer sync the phone contacts and call history.

I have tried: full phone restore, resting network settings, pairing and unpairing the phone.

the only thing I haven't tried is rolling back the IOS because i don't think its possible.

if any one has any solutions i would really appreciate the help.