A garage door opener can only maintain five remotes or four remotes and one keyless entry so if a remote is lost you might have to erase all codes from your opener before you can add a new one.
													
																	How to program a garage door remote opener. 
								
	
		
	
																	Whether you are adding an additional remote control or replacing a lost or damaged remote. 
																	Steps to program a garage door opener. 
																	The small right switch should be set according to how many code setting switches in your receiver either 9 or 12. 
																	The hand held remote unit is a simple transmitter that activates the door opener s motor to raise or lower the garage door. 
															
													
								
	
		
	
																	These garage door opener transmitters have 2 smaller switches to the right of the internal code setting switches. 
																	This video is for liftmaster chamberla. 
																	A remote controlled garage door opener is a convenience that has become a typical feature in most homes with an enclosed garage. 
																	Tried programming the second door held the garage door opener button and pressed the second button and it didn t program the car instead it programmed the remote to open both the main door and 2nd door now from the same button on the same remote external we weren t trying to mess with the main door at this point. 
															
													
								
	
		
	
																	It is easy once you know how just follow our steps below.