LG · Washing Machines
The Child Lock feature prevents unintended use of the washer. To activate or deactivate, press and hold the PRE WASH button for 3 seconds. When Child Lock is set, only the Power button is active.
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Press and hold the PRE WASH button for 3 seconds to lock/unlock control.
When Child lock is set, CHILD LOCK lights and all buttons are disabled except the Power button.
You can lock the washer while it is operating.