Question about Master Lock 5400d: Portable Select Access Key Storage Lock

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Resetting the combination

A friend just gave me this type of lock but couldn't remember the combo. I see a reset button but I haven't been able to get it to do anything. Any suggestions??

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Re: Resetting the combination

The reset works when the current correct combination is set on the front. If you forgot the combination, you can go to the and download a PDF to request a combination from the factory to open it. It requires a notarized form & takes 6+ weeks. In the end, it is probably easier to buy a new one. When resetting the combo, I accidently scrambled it as I flipped it over. And did not know the combo. The reset button would not work. I did some guess work around the setting and got it to release again.

Posted on Feb 19, 2008

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