Question about liftmaster Chamberlain Garage Door Opener Transmitter 300MC

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Garage door opener remte built in in my van suddenly stopped

My built in remote contro;l garage door opener works sporadiaclly.
it closes the door when we leave the house butwhen e come back it wont open the garge door.
but once we open the door using the wall key pad,it will close it and open it.
it is very confising and it does the same for both of my garage doors.
the antena is hanging dpown and I have tried to clear the programing and reprogramming the opener in the van.

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  • 504 Answers

TRY DISCONNECTING THE WIRE TO THE WALL BUTTON. IF THE VISOR REMOTE NOW WORKS YOU HAVE A BAD BUTTON.

HOPE THIS HELPS

Posted on May 23, 2010

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Posted on Jan 02, 2017

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1. weak battery in remote.
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