Kaba 252 Safelock

[chieflittlehorse]

Does anyone know if it is possible to reset this lock back to factory default settings?

Not instructions to change the combination. But to reset as we have the lock but don't know the combination.

[rodneybu0]

Do you have the master code ???
If you don't have that you will not be able to add users or do anything to the lock.

[KJ4IPS]

Barring a major reverse-engineering effort, I'd say no. If there was such a button, a normal user could just press it and suddenly have administrator access.

[rodneybu0]

With kaba 252 , 552 etc you basically can't change the master code or add any more users if you don't have the master code , if you have a user pin set such as 01 40 50 60 you can change that specific pin. Press #1 old code 01 40 50 60 , then the new code twice 01 10 20 30 , 01 10 20 30 , then it is set on 01 10 20 30. Even with the software you get , you can't change pin numbers .

[rodneybu0]

You could try 00 50 25 50 or 00 12 09 43 as master codes if you get a double light flash when you enter either of those codes rather than rapid red light flashing , then you know that is the correct master code

[entropy]

There is a chip on there labelled 24LCxx where xx is some number. That's the memory chip. If you have some electronics savvy, or know someone who does, you can hook a logic analyzer on there and retrieve the code pretty easily. I believe the first three bytes on the chip are the master reset code.