I have a 2006 TL. I started with an LED conversion on the dash lights about a year ago. I replaced the HVAC bulbs, as well as the 4 below the speedometer (brightness setting, car computer). A few days ago, the HVAC, cassette player, heated seat switch, steering wheel, and the blue lights beside the front dome lights, all went out. The speedometer, door, dome lights still all work normally. Also, the indicator lights for A/C, circulation, seat heater on/off still work. I checked the fuses for the interior lights but they're all good. Also, the buttons all work fine. Any suggestions?