If you have a new (since about 2009) door mechanism, you may be wasting your time. The Homelink in the Crossfire dates back to 2004 and with the new security enhancements in the receivers in the home, there is a compatibility issue.

My condo was built in 2008 and everything I tried failed. The two houses I lived in up till then - no problem.

Go to google and type in "HOmelink Programming" for more detailed instructions than come in our owner's manuals.