My maytag neptune washer will come momentaraly

There is a door locking unit that should lock when you press go. This must have failed. It lives just under the lid in the middle at the front. It is thermal piston, when you press go it gets power and extends. When it hits a micro switch that tels the washer the door is shut and allows it to continue, else it shuts down. To get at it you have to take the front off, leave the door on.