I just received my Sharan 2012 with the RNS-315. This unit ships with DAB and a stripped NAVI feature compared to the RNS-510 (which I had in my previous Touran).

Since DAB is well covered all over Norway I prefer to use DAB for radio listening.
I would expect DAB to also carry traffic information (TMC), but it seems not to. At least I have not yet received any Traffic warnings yet.
What could be wrong?

I also seems like the unit do not swap to FM if DAB is unavailable, e.g. in a tunnel.
What am I missing here?

Pål