A Bluetooth ios 7 Issue? - Call Contact......

I was having loads of problems with the Bluetooth and iPod connections - so many that the dealer replaced the head unit.
All was well until the new iPhone 5S and ios 7.
Connection works fine, all seems to be hunky dory until I try to use a voice command 'Phone, Call a Contact' which now returns with the voice response 'No Phone Connected'.
It is - honest - as all of the contacts are available via the display.
Anybody else found this - or know what to do about it?

Have you checked on Topix to see if there's a software update for your car? Also, if I were you, I'd check Apple forums to see if anyone is having general connection errors. And, dare I suggest, check the LR site to be sure your unit is compatible with the new OS.