A lot of GPS units have a little hole on them which you can use to reboot them, but sounds a bit like yours may have a reset button instead, have a look any way.
The other thing that might work is when you get the picture of a car up tap on the screen left then right and so on might take a couple of times doing it, I know this works with my roadmate. Cheers see how u go.
__________________
Just doing the hard yards
|