My Maytag Quiet Series 300 lock light/button will not operate. No other button/light on the door panel will operate, no cycle will run. 
The lock button will not unlock. Is this a problem with the control panel on the outside of the door… or one of the circuit panels inside the door? Could it be a fuse or something relatively simple to repair? Any suggestions? Thanks so much!
I just started having the same issue. Did you ever get it fixed?
There are a few things to try. Hold in the control lock button that is flashing, and the heated dry button at the same time for 5 seconds, and see if that takes the control lock light off. If your dishwasher does not have a heated dry button, then hold in the No Heat dry button, and the control lock button that is blinking at the same time for 5 seconds and see if that clears the light. If that does not work, then kill the power to the dishwasher for about 5 minutes, and then turn the power back on, and then open and close the dishwasher door, and try to start a wash. If that does not do it, then you need a new touch pad. Tom www.applianceeducator.com/parts.htm