I found that out today... but if you want to get to the map, you do have to ultimately touch the screen. Somewhere there must be a creative person with a workaround for this! I did some hunting on the web yesterday, and found this complaint related to a BMW nav system, too. Someone found a hack to fix it, but didn't post what specifically they had to do. I'll continue to hunt and if I find something, I'll post it here.