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A Step-by-Step Guide to Changing the Code on a Mechanical Push Button Lock

Mechanical Push Lock
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Table of Contents

Introduction To Changing The Mechanical Lock Code

A mechanical push button lock offers keyless entry, making it a convenient choice for many homeowners. However, changing the code can seem daunting to those unfamiliar with this type of lock. This guide aims to simplify the process, enabling you to change the code on your mechanical push button lock with ease.

Tools Required

You’ll need the following tools:

  1. A flat-head screwdriver
  2. The original code or current combination (if any)

Understanding Your Mechanical Push Button Lock

Before we dive into the steps, let’s understand the anatomy of the lock. It typically consists of:

  1. Buttons: These are the numbered keys that you press to input your code.
  2. Knob/lever: Once the correct code is entered, you turn this to open the lock.
  3. Chamber: This is the backside of the lock where the code is set.

The buttons interact with the chamber’s internal mechanism. When the correct code is entered, the lever can be turned to retract the latch, unlocking the door.

Steps to Change the Code

Here are the step-by-step instructions to change the code:

  1. Unlock the Door: Using the current combination, unlock the door and keep it open. This is a safety measure to prevent accidental lockouts during the process.
  2. Remove the Back Cover: On the inside of the door, locate the back cover of the lock. Use your flat-head screwdriver to remove any screws holding it in place and gently lift off the cover.
  3. Reset the Lock: Look for the ‘reset’ or ‘clear’ button, usually located near the top of the chamber. Press this button using your screwdriver. You should hear a click, indicating that the lock is now in ‘programming’ mode.
  4. Enter New Code: On the front of the lock, enter your desired code by pressing the corresponding buttons. Ensure that each button clicks into place.
  5. Confirm New Code: Back inside the lock, look for the ‘confirm’ or ‘set’ button, usually located below the ‘reset’ button. Press this to set your new code. Another click should indicate successful programming.
  6. Test the New Code: Before reattaching the back cover, test the new code several times from outside to confirm it works correctly.
  7. Reattach the Back Cover: Once you’re satisfied, reattach the back cover using the screws you removed earlier.


Changing the code on a mechanical push button lock may seem technical, but with the right understanding and tools, anyone can do it. Remember always to keep the door open while changing the code to avoid accidental lockouts. If you encounter any difficulties, don’t hesitate to contact a professional locksmith.

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