The 2 most common part(s) or condition(s) which cause the symptom Dishwasher lights flashing or blinking are listed below starting with the most likely. Check or test each item and watch any available videos.
If the display lights are flashing and there is an error code in the display window, check the wiring diagram and tech sheet in the dishwasher that will provide information on the fault.
RepairClinic Item # 1180782
If the lights are flashing on the display the entire touchpad and control panel assembly might be defective. If the display works but the dishwasher functions are all out of synch, or some of the buttons don't respond properly the entire touchpad and control panel might need to be replaced.