How do you open a garage door if it has a four digit code?

To open a garage door with a four-digit code, locate the keypad on the garage door opener. Enter the four-digit code using the keypad and press the "Enter" or "Submit" button, if available. If the code is correct, the garage door should unlock and begin to open. If it doesn't work, ensure the keypad is functioning and that you're entering the correct code.