Product review (1 stars): Amazon warehouse has a great deal on this...
Get it from Amazon warehouse deals if they still have it. Great deal for about $10 you get a latch with a door switch. If you just need the switch, it costs more by itself and eventually the latch will break since it is plastic.... So save yourself time/money and replace both. This will solve the Start key blinking and the dishwasher not starting when pressing Start(even when the door is closed.) The door switch on these has a small toggle plastic switch that eventually breaks and the dishwasher will just think the door is open and won't start...

I gave this a 1 star because I had replaced this not more than a year ago(I bought it New at that time), so you would think a door switch will last more than a year, but Whirlpool is selling such bad quality parts these days, So 1 Star for that(5 stars for Amazon Warehouse deals)