NWhat you have to do is hold the two outside buttons down until the red light flashes rapidly. What that will do is reset everything. Then you get the handheld garage door openener and put it right up to the button while holding down the openers button and any one of the three buttons(the one you choose will be the one you will have to push to open the door) until the red light flashes rapidly. That is how you do it on older garage door openers. If it is a new one then there is a button you have to push on the back of the actual garage door opener which will give you like 90 seconds to go back to your vehicle and program it the same way as described above. Hope it works for you.
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