I have a 2006 TL, with NAVI. Today all of a sudden all the lights arounf the NAV screen stopped lighting up. Everything on the NAV works and lights up, the lights controls to turn the temp up and down and the other buttons all work, they just don't light up. I thought it maybe the bulbs behind the, so I had them replaced this afternoon, and nothing. Please help!

 

You may want to do a search, the 1st Gen TSX's had the same problem.

 

Start in the 3G Garage: https://acurazine.com/forums/3g-tl-2004-2008-93/3g-tl-service-department-aka-garage-questions-answers-check-here-first-553557/
Section G deals with lighting.
You have a couple of options, from replacing with OEM filament bulbs to using LEDs. Lots of good info in the Garage.
Note that all bulbs are considered "wear items" and are not covered under warranty, although some dealers may do it.