I have noticed that my navigation on my '04 TL at times gives wrong turns, and sometimes has me driving around in circles. And does not give me the fastest route to my destination. It tells me to go left when I have to go right.

And time to destination stays at times ~1000 hours to destination when I have 20 mile drive.

I understand the navigation is not perfect. Does anybody else experience similar problems?

I had my DVD player in my trunk refurbished by Alpine in California. I also have the latest navigation DVD disk.

Is my GPS receiver going bad?