The dash light brightness control may be turned off, check the switch.
a dash cluster, is the gauges and lights etc that are grouped together in front of the driver,
bad bulbs and or blown fuse
Me too on a 2001 Sequoia. Drives fine, headlights, parking lights and dash lights work but that's it. Backup lights, air conditioner controls, all gauges, all indicator lights on dash all dead - all at the same time.
#4 fuse blew
In the fuse box under dash, left of steering column.
usually the dash on the SS has all your gauges and not idiot lights.
If you dash lights are not working check that your parking/brake lights are working also check fuses for cig lighter and interior lights that may help get the dash light working again.
Lose of power or ground since all the gauges quit working.
I had a 1986 cj that had the same problem. Couldn't find the problem until the dimmer switch on the floorboard went out. Replaced the switch and the gauge lights started to work.
If parking lights and dash lights are not working and fuse blows out, there might be a problem with battery corrosion. Check the components specific to the circuits of the affected lights. It might be loose.
CHECK THE FUSE PANEL DASH & TAIL LIGHTS WORK FROM SAME FUSE
Check the fuse.