If it is a Homelink system, do as follows.
First, hold in the two outside buttons. The indicator light will flash slowly, then go out. This means it has cleared the memory.
Second, take one of your garage door remotes in the car. At the same time, push and hold the button on the remote control AND the button inside the car you wish to program. The indicator light will flash slowly for 20-30 seconds, then will flash rapidly. This indicates the car has learned the code.
Finally, find the programming button on the opener itself. It should be under one of the light covers. Push and release it. The indicator on the opener will stay on.
Within 30 seconds, go to the car, and push the button you just programmed. If your opener is Chamberlain-made (Chamberlain, Sears, Liftmaster), the lights on the opener will flash on and off once. This indicates it has learned the remote.
If you have a Genie opener, push the button twice inside the car twice.
Now try it to make sure it works.
KEEP IN MIND- when you're in the process of programming the car, the door will travel up or down every time you push your remote control. Keep people away from the door.
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