How to Replace Batteries in a Keyless Entry on a LiftMaster

LiftMaster wireless keyless entry keypads allow you to enter a personal identification code to operate your garage door and make looking for lost garage door opener remotes a thing of the past. The factory-installed battery in your keypad should last for approximately one year before needing to be replaced.

1. Raise the cover of your LiftMaster wireless keyless entry keypad.

2. Look below the number buttons on the keypad to locate the battery compartment. Slide the battery compartment cover downward toward the floor to remove it.

3. Remove the old battery and dispose of it according to the environmental regulations in your state. Consider recycling the battery if the proper facilities are available.

4. Install a new 9-volt alkaline battery in the keyless entry keypad's battery compartment. Seat the battery in the battery compartment according to the indicated polarity.

5. Replace the battery compartment cover and close the keypad cover to complete the battery replacement process.

Tip

For best performance, LiftMaster recommends using alkaline batteries in your wireless keyless entry keypad rather than rechargeables.

Warning

Corrosion on the battery contacts make it difficult for the battery to properly power your keyless entry keypad. If corrosive material is visible, dip a cotton swab in white vinegar and rub the battery contacts until the buildup is removed. Dry the battery contacts with a dry cotton swab before installing the new battery.