How do you replace the light bulb on a 1999 Toyota Solara that illuminates the heater dash display?

If your talking about the heated seats, you just get a small flat head screwdriver and pop the button out. Unplug the connector and you will see 2 bulbs. One is the for the on position and the other is just the display seat. Turn it with the flat head and the bulb will come out, once you do that put the new one in as you took it out and plug the connector back in and your done.