LiftMaster Security+ 2.0 opener will not accept new remote codes; yellow LEARN LED blinks rapidly when attempting programming.

Safety: Be aware that clearing memory will erase all existing remotes and keypads.

• Verify programming steps: Follow the exact sequence in the LiftMaster manual for your model when adding a remote.
• Clear memory: Press and hold the LEARN button for 6–10 seconds until the LED turns off. This erases all remote and keypad codes.
• Reprogram devices: Press and release the LEARN button, then press the remote button you want to program until the opener light flashes or clicks.
• Check remote battery: Ensure the remote has a fresh battery before programming.