What should I do if detergent remains in the dispenser after a cycle?

Check that dishware such as cookie sheets, cutting boards, or large containers are not blocking the detergent dispenser from opening properly. Also verify your detergent is fresh and lump-free, and confirm the cycle has completed by checking if the green light is on. If the cycle has not completed, resume it by pressing START/RESUME and closing the door within 3 seconds.

From the official Maytag W10401491A Top Control Dishwasher manual, page 10

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