Closing the door, detecting that it is closed, and keeping it locked are different functions. The control coordinates access with states such as movement, water, and temperature according to the design.
From the latch to the operating permit
The physical mechanism holds the door or lid in position. A contact or sensor reports the status, and a locking device, when applicable, prevents opening during the intended phases. A mechanical click does not prove that all of those functions have been completed.
Front-load and top-load machines may lock at different times. The timer or electronic control decides the sequence with the available components. There is no common release time for all models.
Why it does not open immediately
Release may depend on a phase ending, the drum stopping, water being drained, or a thermal condition being met, as well as the mechanism itself. The display should be interpreted with the manual, not just by the padlock symbol.
Child lock does not always mean the door is locked
A control lock function can prevent settings from being changed while leaving other physical conditions unchanged. By itself, it does not guarantee that a door will stay closed with the machine turned off. To locate that option, check the applicable setup instructions.
When a door will not open or the closed position is not recognized, the status needs to be diagnosed before taking action. The closure check distinguishes the mechanism, alignment, and signal. Do not jumper terminals, trick sensors, or operate with the lid open to test how it works.
Interpret access as a sequence of conditions; forcing the mechanism does not resolve the condition that is keeping the lock engaged.