2009 GX 470 ECU Navigation System
 

I was recently in a rear-end crash. The body-shop presumably disconnected the battery, fixed the rear door, and then re-connected the battery.
Now, however, the Navigation screen just flickers.
If I press Info, Audio, or Climate, the screen is just fine
If I press Menu, Dest or Display it flickers.
(Curiously, if I press Info, Audio, or Climate AND THEN press Display, the DISPLAY is fine)

Took it to the dealer, who said it was a coincidental to the body-shop repair, and to be prepared to spend $2000 for a repair.

HELP!

Not sure if this got posted