Had a look around the site, but couldn,t really find what i was looking for. My mate as a beautiful deep red audi a4 170 bhp..... year 2007, anyway on his Dis, it gives him readings of his current fuel range, eg 350 miles left in the tank. Anyway to the point, i'm sure when i had his system in a previous audi i owned.... i was able to change what was readable in the DIS, miles per gallon, time driven etc etc..... now he reckons his DIS cannot be changed from showing fuel tank capacity.... i think he's wrong, so please put me right. He doesn,t have satnav in the car, it looks like the all red led ( i think) display, but does have MF steering wheel, he just as the ordinary concert radio, but is about to fit an off the shelf satnav to the vehicle.... obviously suitable for the audi a4. If you can help... Many thanks.