Hi,

I have 1 1992 SC400 , my ac/heater controls are not working , completely dead . I have pulled every fuse out and check it , they are all good . The illumination light works when I turn on the headlights but thats it. Has anyone had this problem and how did you fix it ,

thanks

Drew

 

I'd say a high possibility that the control panel needs to be replaced...pretty hard to diagnose without seeing the car though!

Todd Matsubara
TM Engineeing LLC

 

I know you did check every fuse but mine did the exact same thing as yours ... but it was the fuse for the cig lighter .. does your cig lighter work if can short out your climate control and the light will still work.? if not check that again ... also if you have ever opened the climate control up sometimes the wires inside can be kinda sensitive you could check those..