Some cycle buttons on my kenmore dishwasher do not work. I always use the smart wash.

SOURCE: Kenmore Ultra Wash Dishwasher: Lock On Button Issue

Have to hold the Air Dry button down til your finger hurts. Release button and the light will go off. The "4 second press" in the manual is incorrect!

SOURCE: Dishwasher (Kenmore 665 Ultra Wash) won't drain. Suggestions?

HI.This is a drain issue. check the following areas for faults.

1. Air gap / Drain hoses
If there is an air gap (located in the sink, near the faucet), check to see if it is clogged. Unscrew the top cap and see if there is anything blocking inside. Note: If there is no air gap installed, the dishwasher might not drain properly.

If the drain hose is clogged, the dishwasher would not drain. If there is an air gap installed, it is very common that a hose going from the air gap into the garbage disposer is clogged. Remove and clean the hose. Make sure to reattach the hose before starting the dishwasher.

Note: If you recently had a garbage disposer installed, it is common to overlook removing the drain plug.

Ok, if the hoses are ok and not clogged, this will confirm a major issue that concerns the drain assembly or pump impeller.

replace the pump(drain) if found to be faulty.

SOURCE: Loud Buzzing Sound from Dishwasher

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.

SOURCE: kenmore dishwasher has stopped draining.

remove the kick panel below the door, place a pan, etc under where the drain hose connects to the drain extension tube, and slide the clamp back some so you can slide the hose off of the extension tube (white plastic tube) and drain any excess fluid into the aforementioned pan, etc., then unscrew the extension tube and check for plugs, or restrictions.
the sump may also be pluged beneath the strainer assembly, and that requires removing the lower spray arm, the water tube that runs up the inside back of the unit, and the upper parts of the assembly below them to access the drain/pump sump area.
last but not least the impeller is jamed and might be able to be freed by removing whatever has lodged within there..
ya never know...
best of luck,
ttfn

SOURCE: Kenmore ultra wash dishwasher control lock light flashing

Just press the 'Air Dry' button for 5-6 seconds....I have an ancient Kenmore Dishwasher (ULTRA)