My 2003 TL-S is almost 3 years old (April) and I'm almost at 30k miles (29,972). I went to start the car this morning and the Nav display asked for the PIN code. Bizzare. I entered the PIN code for the personal addresses I have. No dice. I dug in the glove box for the anti-theft code (yea, I know, I shouldn't keep it in the car) and entered that, bingo, Nav came online.

The clock was reset to pacific time (I'm eastern). All my previous destinations are gone. My personal addresses are all there, but the PIN code protecting them is gone (I can access the personal addresses with no PIN).

The screen brightness and voice volume also reset to their defaults.

Thought maybe the battery lost connection or such (but the car started just fine) so I checked the radio. No problems there.

Hope I don't have a short somewhere.

 

I've had this problem since I got the car. Resets randomly for me. Maybe every month or so.

 

it's happened once on me, but i've owned the car only 2.5 months...

 

Hmmm, only happened the one time.....so far.