todddeb

Can someone tell me how to bypass existing mapping to run four wheel drive mapping from an SD card. I have been told it can be done and that you need to create your own mapping on a 32 SD card then put in the SD slot prior to turning the unit on, however I already have a 4x4 mapping card from a hand held unit and put it in the Avic and it did not work. Do I have to create a new mapping SD card? Does anyone have information on how to do this?