Radio and Steering Wheel Volume and Mode buttons not working

[Sandboxman]

So, I was driving and using my radio to scan stations.   I used the volume up/down controls on the steering column and then the radio controls and the controls on the left side of the steering wheel quite working.  The radio stays on, but none of the buttons or controls on the radio itself work (power, volume, tuning, cassette, CD, etc.  And the 6 buttons on the left side of the steering wheel do not work (volume up/down, Mode and arrows up/down, etc.)

I have checked all the fuses I know to check, evening pulling every single one out on both diver and passenger sides just to check (not too great at understanding all of the codes on the plastic fuse panel covers).

I disconnected the battery and let it sit for well over 15 minutes.

The controls on the screen work for the radio (scan, stations, audio controls).

I am at  a loss as to what else could be the problem. 

Any  suggestions?

Thanks,  Jamie   (2001 LS430)