Suddenly stopped working - won't run on any cycle.

There are a couple of possibilities. To test first unplug the unit for safety. then you must disassemble the door. Inside the door you will find the computer and attached to the computer you will find a thermal fuse. Testing that fuse would be my first check and if it is good checking the computer and door switches would be next. This would be best done by an authorized repair company. https://www.bing.com/videos/search?q=kenmore+dishwasher+replacing+the+thermal+fuse&view=detail&mid=FD3B9503B85F5329C756FD3B9503B85F5329C756&FORM=VIRE

call Sears

No, the designers put it in there for a reason; it won't work as well without it, as it would with it in. Probably the mounting tabs are broken or sprung. A new tower isn't very expensive. You can probably get one from SearsPartsDirect.com, RepairClinic.com, EasyApplianceParts.com, or AppliancePartsPros.com.

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most likely the water is not hot enough,,it trying to heat the water,,when it starts to sense open the door and just test the water,,careful may be hot ,,but i doubt it...another easy way to tell is what is your hot water heater set on,,if you have a lot of soap residue is a good sign..

take kick plate off get book out how to reset board

Probably a faulty solenoid on the dispenser. Not replacable new dispenser needed

have you ever seen green led "Clean" light flashing? before or about the same time the buzzing sound started? and if so that would indicate that the control senses a fault in the temperature rise during the heating cycle and that the electronic control could be reset by initiating a service diagnostic cycle.(which is what you were trying to do) pls reread your manual there are times during that sequence that some buttons have to be pushed at the same time and within a certain amount of time..possible that your machine also has a bad timer which would give you a buzzing noise..if thats the case I would recommend replacing the cpu or control board..or the machin all together..The Kenmore Ultra Wash Quiet Guard name is sears but whirpool has the contract to produce all "kenmore products.hope that helps.

sounds like maybe one of your check valve is not working right.

If you post the model number of your dishwasher plus its approximate age (in years) I can help more.

But the most common cause is a weakening pump motor. On many dishwashers, the wash pump motor is also the drain motor. Replacing that motor / pump assembly will solve the problem. While you are replacing the pump, check the heating element to confirm that it is not shorted out or broken.

For now, add a cap full of bleach to the water _after_ the initial dishwasher fill cycle ends and the wash cycle begins. White vinegar would also work, but this will not fix your problem.

Good Luck!

Yes the wash arm can be removed to get to the sump area. Take the model number for your dishwasher and enter it into a site like partselect.com. There you can get a blown up diagram of the components that need to be removed to get to the cause of the grind noise. Usually a seed or some other hard object has found its way down there.