5 is radio + nav, in some cars the cluster itself adds 16 which makes it 21. Telefon you'll need only if you have an OEM phone kit. In my case I'm using 29=1+4+8+16 which works fine in my B6 with OnStar but without phone.
Remember, if you have the red DIS you will need to turn the RNS-E briefly off and back on to see the route info in the DIS.
Remember, if you have the red DIS you will need to turn the RNS-E briefly off and back on to see the route info in the DIS.