Question about Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+

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I have a Model 139.53684 keyless enty need to reprogam code - have a Chamberlain Whisper Drive Operator. Can you give me insturctions

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Locate the smart/learn button on the rear of the motor unit near where all those white wires go. Press and immediately release this and then walk over to the keypad and key in any 4 digit code you like and press enter.

Posted on Mar 11, 2011

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I don't know this model. (in australia). the chamberlains here are probably the same. the 4 digit code you first put in the keypad is what you have to use. push the learn button on your operator then punch in your 4 digit No. Hold the enter button on your keypad until the light flashes on the operator.
That should code it in.
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Oct 25, 2009 | Sears Craftsman LiftMaster Chamberlain...

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It depends on the type of operator and keyless you have. If they are are compatable, the battery is good in the keyless and there are no wires to the keyless:
1. Push (don't hold) the Smart button (on the back or right side of the operator looking from the back of the operator toward the garage door)
2. Within 40 seconds type in 4 digit code on keyless, push and hold enter 3 seconds

Jan 11, 2009 | Sears Craftsman LiftMaster Chamberlain...

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After you use the keyless if you press any button while the light on the keyless is still working the operator will run.
If that is not the issue try:
Clear all the codes in the operator. (push and hold the learn button @ 20 sec. LED will go off) reprogram each of your remotes including your keyless.

Jan 04, 2009 | Sears Craftsman LiftMaster Chamberlain...

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Yes, you purchased the wrong wireless. You must get a Genie keyless and there are two types of Genie keyless (GWKP & GWK-BL) depending on which Genie operator you have. You might think about a wired keyless entry (Domino GD-1). Then if you change your operator you don't have to change your keyless.

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I want to change the personnal code on the keyless entry on my garage door


Press the learn code button on the back (or side) of the operator. with in @ 40 secs. press in your 4 digit code on your keyless and press the enter button @ 2 secs.

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