My husband pushed buttons on the lg dishwasher and then opened it and closed it. He doesn't know what buttons he pushed and an AE error is showing. .

SOURCE: Maytag dishwasher child lock will not unlock

change the lock botton

SOURCE: Kenmore dishwasher Lock On light flashing

holding the button for four seconds will not do it, you have to hold it until the light stops blinking and
will go back to normal, normall takes more than four seconds to unlock the unit, this is something
the sears repair techs know becouse the are trained on all this things but, they will not share this things, becouse thats how they make money

SOURCE: Have a kitchenaid dishwasher KUDS25SHWH1 - the

Unplug the unit for 15 minutes then plug it back in. This should reset all your computer system and make everything work again

SOURCE: How do you get the child lock off?

Hi,

Please find complete process to switch off the child lock.

http://www.ehow.com/how_5144877_turn-kitchenaid-dishwasher-child-lock.html

Most of the dishwashers are same so the model should not be a problem

Thanks

SOURCE: The dishwasher won't start, its stuck, pots/pan

did you hold the start/resume button for at least 3 seconds if this works the dishwasher will start ok but if there is a fault it will fail again best you contact your nearest service agent good luck