This morning my navigation just stop working (just the buttons and the screen) the map and voice commands still work fine. i had to turn off my car at the stop like to reset the nav (took a while to boot up)and it works fine again. Lately i've notice my system is way off about 20 feet and yesterday after i brought my car in for a service my screen was turn on the the brightest settings which was weird?? I saw a couple of TSB regarding the Navigation for the 04 TL but I cant understand it.

Huy

 

I am having the same problem with my navigation system. Sometimes it guides just fine, but other times it claims that every road I drive on is "unnamed road." Any luck getting it fixed?