One of my drivers uses a Tomtom Via 1515 he bought roughly a year ago. He recently started having problems with the touchscreen. When you go to push on something on the right side of the screen it will actually register an input on the opposite side of the screen. For example at the main Settings menu, if i want to push the arrow right to go to the next set of menu items, it actually selects the change voice icon. It's made the unit basically unusable for the guy.
I looked up how to re-calibrate the screen but I can't access the unit through windows explorer to find and add/edit the files needed to re-calibrate the screen. Any input on how to fix this would be appreciated.