Programming Acura HomeLink to a Garage Door Opener

Pull the vehicle into or just outside the garage, leaving the door's travel path completely clear. During programming and testing the door may cycle up and down several times, so nothing should be in the way. Set up a small step ladder so you can reach the motor unit on the ceiling, and identify its learn (training) button. On many openers this button hides beneath the plastic cover that shields the light bulb, usually next to a small indicator LED.

You need a handheld transmitter that already operates the door, typically the small visor-clip fob with one to three buttons. If none can be found, buy a remote that is compatible with your opener and pair it to the motor unit first. To do that, press the learn button on the motor unit and, inside the 30-second window that follows, hold down the fob button until the opener light blinks. Then press the fob once more to confirm it raises the door.

Put the car into Accessory or ON without starting the engine. On a push-button vehicle, tap the start button once without pressing the brake pedal. On a keyed ignition, rotate the key to the ON position. HomeLink needs power to enter its programming mode.

Before teaching a new code to an unfamiliar unit, wipe whatever the transceiver may already hold. Press and hold the two outer HomeLink buttons together and keep holding them; after roughly 20 seconds the red indicator switches to a rapid flash, at which point you can release. This erases every button, so perform it only when setting up a fresh or unknown unit, and skip it if you are simply adding to buttons you have already programmed.

Position the handheld remote close to the HomeLink panel, roughly 1-3 inches (3-8 cm) away. At the same time, press and hold the remote's button together with the HomeLink button you want to assign. The indicator blinks slowly at first, about once per second, for the first 5-10 seconds, then changes to a rapid blink of 3-4 times per second. The moment it speeds up, let go of both buttons. If the indicator never advances to the fast blink however long you keep pressing, the remote battery is probably weak and should be replaced.

Press the button you just programmed and hold it down for roughly a second. If the door responds, the job is complete. If nothing happens, your opener almost certainly uses a rolling (changing) security code and requires one additional synchronization step at the motor unit. Note that you still had to finish every step above first, even when you already know the opener uses a rolling code.

Climb back up to the motor unit and press its learn button; a small training indicator LED lights up nearby. From that moment you have only about 30 seconds, so it helps to have one person at the opener and another seated in the car. Within that window, hold the freshly programmed HomeLink button for 2-3 seconds until the opener's lights flash to confirm the pairing. Some openers need a multi-step learn sequence rather than a single press, so check your opener's own manual for the exact procedure for your make and model.

Finish by pressing and holding the trained HomeLink button for about a second. The HomeLink LED blinks quickly while you hold it, and the garage door should begin to move. Repeat the test a few times to be certain the link is reliable before putting the ladder away.