How to reset a kenmore ulrta wash model 665.16819. I tried holding the lock button but that doesn't work

https://homeguides.sfgate.com/fix-flashing-clean-light-kenmore-dishwasher-86468.html

https://www.hunker.com/12475069/how-to-reset-the-control-pannel-for-a-kenmore-dishwasher-quiet-guard-2

Or you can try a hard reset it by unplugging it for 20-30 minutes.