Hello there. I've recently picked up a 2013 Mk7 Golf GTI and don't seem to be able to get any voice announcements when using the navigation system.

The car still has 11 months VW warranty which was part of the deal when I bought it, so before i go back to VW I wanted to make sure i havent...

Using the Nav system on a rare occasion today when SHMBO decided to turn down radio volume however she appears to have managed to reduce the Nav announcements to a whisper and I cannot work out how to raise it again. Help!