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

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The combination our Master Lock Co Combination Lock Box Part # 5401D was changed by accident. How do we find the combination to open the box?

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No joke... trial and error... its not going to be fun, but work out a system so you don't cover the same number twice.

Posted on Sep 01, 2010

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1 Answer

How do I set up a Master Lock Key Safe with a new code


Open the box, with the existing combo, push the reset lever to the left and down, dial in your new combo, push the reset lever up and right to set.

Oct 04, 2014 | Master LOCK 5401D Combination Key Safe...

1 Answer

I doubt you can help me. I've moved into a flat with a Master Lock Select Access outside the front door. [5401D) I have the instructions but there is no record of the combination, and stupidly I've...


Unless the last occupant registered your Master Lock 5401d combination at Masterlockvault.com and can assist you to recover the combination, then you can only try every possible combination.

Masterlock themselves will not assist you as you are not the registered purchaser.

Jul 27, 2011 | Master Lock 5400d: Portable Select Access...

2 Answers

I forgot the combination to my master lock box. What do I need to open the box?


If you do not have the combination, try to contact the manufacturer directly. There may be a serial number on the lock that they can match the combination to.

If that does not work, you will need to contact a locksmith.

Apr 20, 2011 | Master Lock : Locking Combination 5-Key...

1 Answer

How do you set the combination?


Open the lock with the existing combination. Inside the flap, you'll see a small chrome lever. Push the lever to the left (as you're looking into the box) and **** it up into the offset slot. This puts the lock into the "learn" mode. Select your new combination and rotate each wheel until the numbers line up at the opening index. Flip the lever out of the "learn" position, and back into the "home" position.

Test your new combination several times, before closing the door.

Nov 03, 2010 | Master Lock 5400d: Portable Select Access...

1 Answer

Master Lock 5400D Key Storage Combination Lock box i reset it combination a couple of days ago and it worked fine until today. Now it won't open with the new combination. How can I get in to it without...


Two solutions: (if the box is closed and it is attached to something)


1. Contact Masterlock.com and fill out the form, get it notarized and send it in for the combination to unlock it based on the S/N which is on the lock.(http://www.masterlock.com/faq/LostCombinations/). Good luck on this since Masterlock will end up finding something that will prevent them from giving you the combination. Its quite frustrating and NOT worth the trouble.

2. Go to home depot. Buy a 24in bolt cutter ($22) cut the stem of the lock. and replace with a new lock that you can buy from home depot for $ 29.00. If you have a key that is inside the lock box that you really need, You will now need to drill out the combinations piece by piece and the door will pop open or send the lock back to Masterlock. They will retrieve the key for you and send it back.

Jun 25, 2010 | Master Lock 5400d: Portable Select Access...

1 Answer

Century safe lock , not able to open the combination lock oper b


just boughy it and instructions got thrown away by accident . I have keys but no combination please advise..... Numbers on door that are tagged on is: BJ-285913* an another sticker that says 50310 BJ285913 please advise...

Apr 28, 2009 | Safe International Digital Electronic Safe...

1 Answer

Master lock 5400D lock box


Master lock offer a free replacement service for locks which develop a mechanical defect during normal use.
See their website here for further information -

http://www.masterlock.com/customerservice/

If the lock has been forced or tampered with to cause this problem, then a replacement is needed.

Hope this helps

Nov 14, 2007 | Master Lock 5400d: Portable Select Access...

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