Why does my washing machine lid not unlock?
Make sure the lid is closed for the washer to operate properly. If a cycle was stopped or paused using the Start (Pause/Unlock) button, the washer may still be spinning and the lid will not unlock until the basket has stopped spinning, which may take several minutes with large loads or heavy fabrics.
From the official Whirlpool W11545828 Top Load Washing Machine manual, page 11
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