Release the button when the motor unit light blinks which will indicate that the new remote has learned the code.
Program chamberlain garage door remote 950cd.
2 for chamberlain 371lm 373lm 374lm 3 on garage door opener chamberlain 950cd security 1 on 315mhz remote chamberlain 950cd security 1 on 315mhz remote chamberlain.
The 950cd 950d chamberlain garage door remote is identical to the liftmaster 371lm remote.
Within 30 seconds press and hold the button on the hand held remote.
Every time you use the remote the code changes to stop thieves from hacking your device.
Helpful pdf guide to the chamberlain 950cd remote with reprogramming instructions and guide to reset my opener or troubleshoot my garage door opener.