Sim not recognised
I would suggest RTTI is much more responsive to changes than the old TMC based system which uses the Classic FM frequency to broadcast data around the UK. Have nothing to back that up but my TomTom uses RTTI and it's very good...the Volvo isn't far behind when I look at both. Thinking back to old days of using just TMC what we have now is a great improvement. Worth the money me thinks
T4 Auto AWD R Design March 2019