Open the door and keep it unlocked
Remove the lock’s interior cover or battery cover
Locate the reset button or reset switch
Press and hold the reset button until the lock beeps or flashes
Enter the current master code if prompted
Enter a new code
Confirm the new code by re-entering it
Test the new code with the door open
Reinstall the cover
Replace the batteries if needed
Check the lock manufacturer’s manual for model-specific steps