Had a problem with someone having the same frequency that I have to open the garage door. They would open the garage door in the middle of the night and I wouldn't know about it until the next morning when I went outside. This happen twice, I was lucky they didn't steal any thing. Any way I have a Sears opener with rolling code so I cleared all the remotes and had to start over to get them to work. I just used the learning button on the control to program them and everything worked out fine the first time around. You press the button and you have 30 seconds to program each remote. Problem solved, I hope.
cheers
vern

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2006 X3 3.0iA 4/6 Build Date-Silver Gray Metallic-Black Leather-Nav-PP-SP-PDC-Xenon Headlights-Heated Front Seats-Privacy Glass-Servotronic Steering-Premium Sound System-Red Rear Reflectors-Wheel Locks-Rubber Matts-Euro Delivery 5/18/2006-Redelivery 7/17/2006