My Maytag dishwasher MOD87749AWM1 start button does not work and the door does not latch. Cannot start it.

SOURCE: Maytag Dishwasher Latch Sticks

John, I had the same problem and just disassembled by removing the dozen or so screws around the inside of the door, lifting the waterproof panel, and pulling up the latch assembly to see what was broken. In my case there were plastic pieces broken off of the latch handle and where the latch hinges on the back of the control panel-the latter piece is $50 to replace. unfortunately. Good news is the disassembly and replacement will be easy as a DYI. Sorry this is too late to help you, but maybe others will have the same problem. Bruce

SOURCE: dishwasher won't stop when door is opened mid-cycle

Hello,
Welcome

You need a new door latch mechanism.
It is faulty and not doing it's job of over riding when the door is opened
Please remember to leave a solved rating before leaving

SOURCE: Kitchenaid Dishwasher door wont latch

I have a brand new whisper quiet dishwasher model kudk02crbs4 I hook everthing up but the door does not lock what is worng I have no clue what wrong

SOURCE: Maytag MDBtt60awb

most likely you have a bad motor when replacing the motor ihave found it is cheaper to get the pump with the motor attached where as they charge you more money for just the motor or the pump seprately try allbrands appliance parts they seem to be cheaper

SOURCE: How do I replace the door latch on my dishwasher?

Don't try to bend anything! The latch mechanism in the door is probably broken. Open the door and remove the 11 torx screws holding the inner panel on. You will probably find broken plastic bits on the pathetically flimsy latch; mine failed after 4 years and I expect it to happen again.
If you do, see the link given in "I Have 3 problems with my dishwasher, my...",
http://www.appliancepartspros.com/partsearch/model.aspx?model_id=5168615&diagram_id=1349844#d1349844 Unlatch the two switches and slide them off the old part and onto the new one, observing all the obvious precautions about not getting shocked and putting the switchess on correctly. Reassemble the door and latch with the screws.