Hello everyone this is my first post. I just bought a 05 tl with only 47k miles, so I plan on frequently visiting. I have an electrical issue I believe... The display for the radio (shows what station your on) sometimes disappears, or doesn't show at all. Also my Navi always starts up, but soon after the buttons all quit working. Just curious if this was a common problem or if anyone had advise. I REALLY don't want to take it to the dealership