For efficient programming and accurate transmission of the Radio Frequency (RF) signal, it is recommended that a new battery be placed in the hand-held transmitter of the device that is being programmed to the HomeLink® system. Make sure your hand-held transmitter is programmed to activate the device you are trying to program your HomeLink® button to.
Ensure that your vehicle is parked outside of the garage before you begin programming.
It is recommended that you erase all the channels of your HomeLink® before you use it for the first time.