Question about liftmaster Chamberlain Garage Door Opener Transmitter 300MC

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We have 2 openers and both have lost their signal range to where the doors wont even open at times.

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  • shanedunlap8 Mar 10, 2009

    No I haven't yet but one of the remotes is built into our escalade so it is powered from the vehicle and it is happening on two seperate openers. It did the same thing last year I believe there is some sort of interference problem I just don't know where to start looking. Nothing has changed in my home

  • pandaman113 May 11, 2010

    hos old are they and when was the last time you replaced the 12volt battery inside your remotes. both of them tell me it's the remotes need new batteries good luck

  • kev442 May 11, 2010

    Did you change the batteries?

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Replace the batterys 12volts

Posted on Jun 20, 2009

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