Hi,

I may be facing a major issue with the navigation on my '04 TL. For some time now, the screen constantly resets, either showing the "Acura Navigation System" page (the one with the Earth below it) or blank for a while. When it does come up, it begins to 'drift' and starts showing the car in progressively farther positions from where it actually is as time wears on.
There is also the frequent appearance of the screen requesting the security code and that the car remain stationary while the GPS satellites garner a fix.

Has anyone encountered this issue and is there a TSB related to it?
I'm concerned this may be a costly repair.

Thanks!