How do I lock the dishwasher controls to prevent unintended use?

Press and hold the HEATED DRY button for 5 seconds until the Locked light glows to lock the controls. When Locked is lit, all buttons are disabled, and pressing any pad will cause the light to flash 3 times. To unlock the controls, press and hold HEATED DRY again for 5 seconds until the light turns off. Note that the dishwasher door can still be opened while the controls are locked. (Page 16)