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

1 Answer

TRANSMITTER IS "DROPING" CODE

I have craftsman 1/2 horse opener, recently one of the transmitters stopped working. I thought is was battery first, so I changed it but still didnt work.

Then I noticed my wired pushbutton was flashing, so I reset the codes and was back in business-for a day!
Then both of the doors were having the same issue, so I reset those, and they are fine now, but why would they loose their code to begin with?
Also, now that I have reset my codes, I am not able to use the keypad, how can that be corrected.

Thank you

Posted by on

  • thewebsta Jul 03, 2008

    Thank you! But how do I do the keypad?

    When I set code button on opener, what do I select afterwards on keypad?
    Because when I did the remotes I set code button, then selected one of the three buttons on remote.


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  • 91 Answers

This is a very rare condition that I have come across. I believe it's related to a power surge. Replace back-board.
The only other thing I have seen is that someone will replace the opener and not replace the wall button and you only have a doorbell type button instead of the wall button that came with the newer system which has 3 buttons on it one of which is 'lock'.
When the button is flashing the opener is in 'lock' mode and won't 'listen' for any remote control at all (incase your on vacation and someone is trying to hack your opener code) but the wall button will still work.
You need to reprogram the keypad again like you reprogrammed the remotes.

Posted on Jul 02, 2008

  • Jim  K
    Jim K Jul 03, 2008

    If the keypad requires a battery to operate then all you need to do is push the 'learn' (set the code) button then slowly input the 4 digit code you want on the keypad and press enter.

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Genie Intellicode Remote Transmitter Programming Instructions


USE ONLY WITH SERIES II ELECTRONICS.<br /> Older Transmitters and Receivers will not work with these new electronics. There are no Security Code Switches inside the Door Operators, Transmitters and Receivers.<br /> <br /> <br /> To Program Receiver <br /> Step 2-1 Locate the Learn Code Button and Radio Signal Indicator on the Power Head Receiver of your Door Operator.<br /> <br /> Step 2-2 Press a Transmitter Button once within 30 seconds.<br /> <br /> Step 2-3 Press and release the Learn Code Button<br /> &bull; The Radio Signal Indicator will blink approximately 2 times per second.<br /> &bull; The Radio Signal Indicator stays lit - SOLID.<br /> <br /> Step 2-4 Press the same Transmitter Button within 30 seconds.<br /> &bull; Radio Signal Indicator will go out.<br /> <br /> NOTE: If a second Transmitter Code is not confirmed within 30 seconds or if a different Transmitter Code is sent, the Radio Signal Indicator will blink approximately 4 times per second, then programming will stop. If programming stops, repeat Steps 2-2 through 2-4.<br /> <br /> Step 2-5 Repeat Steps 2-2 through Step 2-4 for each Transmitter, Wireless Keypad or other access device to be learned.<br /> <br /> NOTE: A maximum of 7 Transmitter, Wireless Keypad and other access device Codes can be stored into Receiver Memory at one time. If a Transmitter becomes lost or if you want to delete a Transmitter, Wireless Keypad or other access device, proceed to ERASING ALL RECEIVER MEMORY.<br /> <br /> <span style="font-weight: bold;">Multi-Button Transmitters</span><br /> <br /> NOTE: Only ONE button of a Multi-Button Transmitter can be programmed into a single Receiver. The other buttons are to control other Door Operators.<br /> <br /> NOTE: If you are replacing a lost or stolen Transmitter:(1) Erase ALL Transmitter Codes from the Receiver memory. (2) Reprogram the Receiver with the remaining Transmitters Codes.<br /> <br /> <span style="font-weight: bold;">Erasing All Receiver Memory</span><br /> <br /> Step 4-1 Press and HOLD the Learn Code Button for 10 seconds or until Radio Signal Indicator goes out.<br /> <br /> <span style="font-weight: bold;">ALL Transmitter Codes are erased from Receiver memory.</span><br style="font-weight: bold;" /> <br /> Step 4-2 Reprogram the Receiver with the remaining Transmitter Codes (Repeat Steps 2-2 through 2-4).<br /> <br /> <span style="font-weight: bold;">Step 5-1 Battery replacement</span><br /> &bull; Slide Battery Cover off of Transmitter back.<br /> &bull; Replace with new batteries.<br /> &bull; Slide Battery Cover back on.<br /> <span style="font-weight: bold;"><br /> Step 5-2 Visor Clip installation</span><br /> &bull; Slide Visor Clip into back of transmitter until it snaps into<br /> place.

on Jun 21, 2011 | Genie Company IntelliCode GICT390-1BL...

1 Answer

Remote transmitter stopped working, changed battery, reprogrammed opener and it works but now only at a very short distance - about 1 -2 feet. Is this a transmitter issue or the opener?


There is no way to tell if you only have the one transmitter. If you have another remote or a wireless keypad that is working normally then it is that remote.

Jul 07, 2011 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

I don't have the owner's manual for my 2002 GMC Yukon XL Denali. Do you know how to program the garage door opener?


I hope this helps.

Programming the HomeLink Transmitter
Do not use the HomeLink Transmitter with any garage
door opener that does not have the stop and reverse
feature. This includes any garage door opener model
manufactured before April 1, 1982.
Be sure that people and objects are clear of the garage
door you are programming.
It is recommended that a new battery be installed in
your hand-held transmitter for quicker and more
accurate transmission of the radio frequency.
Your vehicle's engine should be turned off while
programming the transmitter. Follow these steps to
program up to three channels:
1. Decide which one of the three channels (one of the
HomeLink buttons) you want to program.
2. Press and hold the desired button on HomeLink
through Step 3.
3. When the HomeLink indicator light begins to blink
slowly (this may take up to 30 seconds), hold the
hand-held transmitter about 1 to 3 inches (3 to 8 cm)
away from HomeLink and then press and hold the
transmit button on the hand-held transmitter.
Continue to hold both buttons until the indicator
light on HomeLink begins to flash rapidly (this may
take up to 90 seconds).
If you have trouble programming HomeLink, make
sure that you have followed the directions exactly as
described and that the battery in the hand-held
transmitter is not weak. If you still cannot program it,
move the hand-held transmitter to the left or right or
forward or backward or flip it upside down. HomeLink
may not work with older garage door openers that do
not meet current Federal Consumer Safety Standards.
If you cannot program the transmitter after repeated
attempts, refer to "Training a Garage Door Opener with
Rolling Codes" later in this section or contact the
manufacturer of HomeLink at 1-800-355-3515,
or on the internet at www.homelink.com.
Be sure to keep the original hand-held transmitter in
case you need to erase and reprogram HomeLink.


Training a Garage Door Opener with a
"Rolling Code" Feature (If Equipped)
If you have not previously programmed the hand-held
transmitter to HomeLink, see "Programming the
HomeLink Transmitter" listed previously. If you have
completed this programming already, you now need to
train the garage door opener motor head unit to
recognize HomeLink.
1. Find the "Learn" or "Smartbutton" on the garage
door opener motor head unit. The exact location and
color will vary by garage door opener brand. If you
have difficulty finding the Learn or Smart button,
refer to your garage door opener owner's manual or
contact the manufacturer of HomeLink at
1-800-355-3515, or on the internet at
www.homelink.com.
Because of the steps involved, it may be helpful
to have another person assist in programming
the transmitter.
2. Press the Learn or Smart button on the garage
door opener motor head unit. An indicator light will
begin to flash when the motor head unit enters the
training mode.
Following this step, you have 30 seconds to
start Step 3.
3. Return to HomeLink in your vehicle and firmly
press and release the programmed HomeLink button
three times.
The rolling-code garage door opener should now
recognize HomeLink. You may either use HomeLink
or the hand-held transmitter to open the garage door.
If after following these instructions, you still have
problems training the garage door opener, contact the
manufacturer of HomeLink at 1-800-355-3515,
or on the internet at www.homelink.com.
www.gmcextendedwarranty.com

Dec 19, 2010 | GMC Yukon XL Cars & Trucks

1 Answer

Quantum 3213. the door opener opens neighbors and visa versa


You can follow these instructions to change the code of yours. Might work for you.

NOTE: You must change the transmitter's code before programming the transmitter to the motor head unit.
The following steps describe the process to change a Quantum™ and Classicdrive™ security code.
This process only works fro transmitters with a GREEN LED and a "U" in their model number, such as "02-3047 2B U" or "02-3047 2B UH".
Changing the Transmitter Code
1. Press and hold the button on the transmitter that you want to change. The GREEN LED will flash once and then turn off.
2. Continue to hold the button until the GREEN LED begins to flash (approx. 10 seconds).
3. When the GREEN LED flashes, immediately release the button and then immediately press and hold the same button again. The GREEN LED will now come on steady.
4. Continue to hold the button until the GREEN LED begins to flash (approx. 5 seconds).
5. When the GREEN LED flashes, immediately release the button.
6. The code for this button has now been changed to a new randomly generated code. Do not push the button again until instructed in "Programming Transmitter to Power Head Unit".
7. You must now re-program this transmitter to the motor head unit. See "Programming Transmitter to Power Head Unit".
Programming Transmitter to Power Head Unit
1. Press the PROGRAM button located on the garage door motor head unit once. The PROGRAM STATUS light on the motor head unit will turn on and remain lit for one minute, indicating that it is ready to learn the Transmitter code.
2. Press the same button on transmitter as you did in "Changing Transmitter's Code" above. The PROGRAM STATUS light will turn off indicating a successful learn.
3. Press the same button on the Transmitter once more to operate the door.
4. If you are unsuccessful in programming the transmitter to the motor head unit of if the button does not operate the door or if you wish to program another button to operate a different door, you must change the transmitter's code.
Battery
If the LED does not turn on when button is pressed, replace battery.



Jan 18, 2010 | Universal Garage Wireless Keyless Entry...

2 Answers

I have a 2001 Accord and if I hit the unlock button and do not open any door within a certain amount of time (2-5 minutes) it automatically re-locks it. Is there a setting I can change to prevent this...


Hi there,

Hope the following procedures helps.

TRANSMITTER TEST



NOTE:

If the doors unlock or lock with the transmitter, but the LED on the transmitter does not come on, the LED is faulty; replace the transmitter.

If any door is open, you cannot lock or unlock the door with the transmitter.

If you unlocked the doors with the transmitter, but do not open any of the doors within 30 seconds, the doors relock automatically. ?

The doors do not lock or unlock with the transmitter if the ignition key is inserted in the ignition switch.





1. Press the lock or unlock button 5 or 6 times to reset the transmitter.

If the locks work, the transmitter is OK.

If the locks don't work, go to step 2.



2. Open the transmitter and check for water damage.

If you find any water damage, replace the transmitter.

If there is no water damage, go to step 3.

3. Replace the transmitter battery (A) with a new one, and try to lock and unlock the doors with the transmitter by pressing the lock or unlock button 5 or 6 times.

If the doors lock and unlock, the transmitter is OK.

If the doors don't lock and unlock, go to step 4.



NOTE: The transmitters for LX models and EX models are different and are not interchangeable.



4. Reprogram the transmitter, then try to lock and unlock the doors (see Transmitter Programming ).

If the doors lock and unlock, the transmitter is OK.

If the doors don't lock and unlock, replace the transmitter.



TRANSMITTER PROGRAMMING

Storing transmitter codes:

The codes of up to three transmitters can be read into the keyless receiver unit memory. (If a fourth code is stored, the code which was input first will be erased.)



NOTE: It is important to maintain the time limits between the steps.



1. Turn the ignition switch ON (II).

2. Within 1 to 4 sec., push the transmitter lock or unlock button with the transmitter aimed at the keyless receiver unit behind the glove box.

3. Within 1 to 4 sec., turn the ignition switch OFF.

4. Within 1 to 4 sec., turn the ignition switch ON (II).

5. Within 1 to 4 sec., push the transmitter lock or unlock button with the transmitter aimed at the keyless receiver unit behind the glove box.

6. Within 1 to 4 sec., turn the ignition switch OFF.

7. Within 4 sec., turn the ignition switch ON (II).

8. Within 1 to 4 sec., push the transmitter lock or unlock button with the transmitter aimed at the keyless receiver unit behind the glove box.

9. Within 1 to 4 sec., turn the ignition switch OFF.

10. Within 4 sec., turn the ignition switch ON (II).

11. Within 1 to 4 sec., push the transmitter lock or unlock button with the transmitter aimed at the keyless receiver unit behind the glove box.

12. Confirm you can hear the sound of the door lock actuators. Within 1 to 4 sec., push the transmitter lock or unlock button again.

13. Within 15 sec., aim the remaining transmitters at the keyless receiver unit (up to two additional ones) whose codes you want to store at the receiver, and press the transmitter lock or unlock buttons. Confirm that you can hear the sound of the door lock actuators after each transmitter code is stored.

14. Turn the ignition switch OFF, and pull out the key.

15. Confirm proper operation of the transmitters.

Cheers!
Ryan

Jun 11, 2009 | 1998 Honda Accord

1 Answer

Intermittent problem w/Sears garage door opener transmitter


If the wall control is flashing, the lock has been engauged. Hold the lock button for 3 seconds to turn off. The light should be solid after doing this.

Feb 24, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Transmitter not working ( 3 of them)


don't hold down green button. push for one second. do yu have console with vacation or lock button. deactivate it.

Dec 27, 2008 | Sears Craftsman LiftMaster Chamberlain...

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