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

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How do you open a master lock model 5400d if you forgot the combination

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It would appear that you made a mistake in setting your new combination on your Master Lock 5400d and did not register the combination at Masterlockvault.com. The only way to open your lock is by using the correct combination. There is no other way. Most mistakes are normally one or two digits out, so you may wish to try variations on what you thought you set.

Apart from that you can either try every possible combination or you will need to contact the manufacturer. But they cannot assist you if the lock does not have a serial number (they recently stopped applying serial numbers for greater security) and they will not assist if the lock is already secured to anything. There are a number of other hurdles as well, click here for details. Given that they state that you will have to wait four to six weeks for an answer, it's going to be far quicker to just try every possible combination.

Posted on Jul 14, 2011

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Related Questions:

1 Answer

How to reset combination


To set a new combination:
The initial combination is set at the
factory to 0-0-0-0
1. Open the compartment door
2. Push the reset lever left and down.
The lever remains in this position
3. Rotate dials to your desired combination
4. Push the reset lever, up and right, back
to the original position
5. Close the key storage compartment door
6. Scramble the combination dials to lock
the door and conceal your combination
7. Close the shutter door

Sep 03, 2014 | Master Lock 5400d: Portable Select Access...

1 Answer

I have a master lock its a lockbox model 5400d i forgot the combination and my car keys are in it


You have forgotten the combination on your Master Lock 5400d and did it appears that you did not register the combination at Masterlockvault.com. The only way to open your lock is by using the correct combination. There is no other way. Most mistakes are normally one or two digits out, so you may wish to try variations on what you thought you set.

Apart from that you can either try every possible combination or you will need to contact the manufacturer. But they cannot assist you if the lock does not have a serial number (they recently stopped applying serial numbers for greater security) and they will not assist if the lock is already secured to anything as is currently the case. There are a number of other hurdles as well, click here for details. Given that they state that you will have to wait four to six weeks for an answer, it's going to be far quicker to just try every possible combination.

Jul 14, 2011 | Master Lock 5400d: Portable Select Access...

1 Answer

I have a 5400D Master lock.I changed the default combanation and hung it on my closet door and approx. two months later it remains there because I forgot the combo.I called Master Lock and was told its...


Master Lock would be thrilled to sell you a new lock. Run through the possible combinations, systematically, until you hit on the correct one. There are 10,000 of them. Shouldn't take any longer than a week.

Oct 26, 2010 | Master Lock 5400d: Portable Select Access...

1 Answer

I've had a masterlock 5400d master lock for half a year and I forgot the password and it contains a special key.


The only way to open your lock is by using the correct combination. There is no other way.

You can either try every possible combination or you will need to contact the manufacturer. But they cannot assist you if the lock does not have a serial number (they recently stopped applying serial numbers for greater security) and they will not assist if the lock is already secured to anything. There are a number of other hurdles as well, click here for details. Given that they state that you will have to wait four to six weeks for an answer, it's going to be far quicker to just try every possible combination.

Sep 21, 2010 | Master Lock 5400d: Portable Select Access...

1 Answer

My 5400D is open and I forgot the four digit code can you help me re-set it???


The only way to open your lock is by using the correct combination. There is no other way.

You can either try every possible combination or you will need to contact the manufacturer. But they cannot assist you if the lock does not have a serial number (they recently stopped applying serial numbers for greater security) and they will not assist if the lock is already secured to anything. There are a number of other hurdles as well, click here for details. Given that they state that you will have to wait four to six weeks for an answer, it's going to be far quicker to just try every possible combination.

Aug 13, 2010 | Master Lock 5400d: Portable Select Access...

1 Answer

I got the master lock speed dial and forgot my combination


Try your old password but push the shackle towards the lock once then put in your old password twice then pull the shackle

Sep 16, 2009 | Master Lock 5400d: Portable Select Access...

3 Answers

I forgot my locker combination to a lock and and i cant open it.


how do i get the box open . the box is 5400D portable key storage i'm a realtor

Sep 17, 2008 | Master Lock 5400d: Portable Select Access...

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...

3 Answers

Lock won't open


Have 5400D Master Lock. Know combination, but it will not open. Can someone help me?

Aug 18, 2007 | Master Lock 5400d: Portable Select Access...

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