Change Your LiftMaster Keypad Code in Four Steps

Most LiftMaster keypads let you change the access code yourself without calling a technician. The exact steps depend on your opener model, but the process usually takes less than five minutes and requires only the current code and the keypad itself. You do not need to reprogram the entire opener or touch any wiring.

The standard method works on LiftMaster models 877MAX, 877LM, 877H, and 373LM: enter your current code, press the pound key (#), enter your new four-digit code, press pound again, then press the star key (*) to confirm. The keypad will beep or flash to show the change took effect. If your model is older or different, the steps may vary — check the label on the back of the keypad or your garage door opener manual for the exact sequence.

Key Takeaways

  • Most LiftMaster keypads let you change the code by entering the old code, pressing #, entering the new code, pressing # again, and pressing * to confirm.
  • Your new code must be four digits long and different from the old one to prevent accidental lockouts.
  • If the keypad does not respond or you forget the current code, you will need to reset the opener itself, which requires the master code or a technician visit.
  • Write down your new code and store it somewhere safe, separate from the keypad location.

Locate the Model Number and Check Your Manual

The back or bottom of your LiftMaster keypad has a label with the model number printed on it. Write this number down before you start, because the code-change steps are not identical across all models. Some older keypads use a different button sequence, and a few require you to hold a button for several seconds before entering the code.

Your garage door opener manual came with a card or booklet that shows the keypad instructions. If you no longer have the physical copy, you can search the LiftMaster website by model number to read the PDF. The manual will show you the exact button sequence for your keypad and tell you whether there are any special requirements, such as a master code or a reset procedure.

Enter the Current Code and Begin the Change Sequence

Stand in front of the keypad and enter the four-digit code you use now to open the door. Do not press any other buttons yet. The keypad may light up or beep to show it received the input. If nothing happens, the batteries may be dead — replace them with fresh alkaline batteries and try again.

Once the keypad responds to your current code, press the pound key (#). This tells the keypad you are about to enter a new code. Some models will beep twice or flash a light to confirm you are in programming mode. If your keypad does nothing, check your manual — a few older models require you to hold a button down for three seconds instead.

Enter Your New Code and Confirm the Change

Type your new four-digit code into the keypad. Choose a number that is straightforward for you to remember but not obvious to others — avoid birthdates, house numbers, or sequences like 1234. The code must be different from your old code; if you enter the same number, the keypad will reject it and you will have to start over.

After you type the new code, press the pound key (#) again. This tells the keypad you have finished entering the new code. Then press the star key (*) to confirm and save the change. The keypad should beep three times or flash a green light to show the new code is active. Try opening the door with the new code to make sure it works before you walk away.

What to Do If the Keypad Does Not Respond

If the keypad does not beep or light up when you press buttons, the batteries are likely dead. Remove the keypad from the wall or post, open the battery compartment on the back, and replace the batteries with fresh alkaline ones. Reinstall the keypad and try the code change again. Do not use rechargeable batteries — they do not provide enough voltage for the keypad to work reliably.

If the keypad still does not respond after new batteries, the unit may be faulty and need replacement. If you forgot your current code and cannot enter it to start the change sequence, you will need to reset the opener using the master code or have a technician reset it for you. The master code is usually printed on a label inside the opener housing or in your manual.

Store Your New Code Safely

Write your new code down and keep it in a safe place away from the garage — a locked drawer, a password manager, or a note in your phone. Do not tape it to the keypad, leave it on the garage wall, or store it in an obvious location. If someone finds the code, they can open your garage door and access your home.

If you share the code with family members or contractors, tell them to change it again once they no longer need access. If you suspect someone has used your code without permission, change it when ready and consider having a technician check the opener for signs of tampering.

Frequently Asked Questions

Can I use a code with letters or special characters?

No. LiftMaster keypads only accept four-digit numeric codes (0 through 9). You cannot use letters, symbols, or codes longer or shorter than four digits. The keypad will reject any input that does not match this format.

What happens if I enter the wrong code by mistake during the change?

If you make a mistake while entering the new code, press the star key (*) to cancel and start over. You will need to re-enter your current code first. If you have already pressed pound twice and star once, the new code is saved — you cannot undo it, so you will have to change it again.

Do I need to reprogram my garage door opener after changing the keypad code?

No. Changing the keypad code does not affect the opener itself or any other remotes or keypads you own. Each keypad has its own independent code. If you have multiple keypads, you can change each one separately, and they can all have different codes.

What if I change the code and the garage door still opens with the old code?

This usually means the change did not save. Try the process again, making sure you press pound and star at the right moments. If the old code still works after a second attempt, the keypad may be faulty or the batteries may be too weak. Replace the batteries and try once more.

Can I reset the keypad to its factory code?

Most LiftMaster keypads do not have a factory reset button. If you forget your code and cannot change it, you will need the master code for your opener (usually found on a label inside the opener housing) or you will need to contact a technician to reset the system.