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

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Change code on keyless entry. Now the remote does not work.

The two should not have anything to do with each other.. Right???

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Did you clear the codes existing in the unit? (Press and hold the learn button; LED light will stay lit for approx. 6 seconds.) If you have remotes that have dipswitches, pop the battery cover off and make certain that all switches are set identically in each remote. Now, press the learn button on the main unit and immediately release. While its LED light is lit, press the button on ONE of the remotes only. They will ALL be programmed at this point. Now, press the learn button once more (quickly and release) and enter your number code on your keypad and press enter. It should be programmed now, too.
I was having a similiar problem, and this turned out to be the solution. Before, I was programming both remotes, not knowing as I did so that by programming one, and then another, I was UNprogramming the the first as well as the keypad.
I hope this works for you. It did for me.

Posted on Jan 23, 2009

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Posted on Jan 02, 2017

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2003 crown vic keyfob only works with ignition in run position .keyless entry and door locks work fine.even tried new keyfob.no change


The keyless entry system consists of the following components:
  • driver door module (DDM)
  • keyless entry transmitter
  • keyless entry keypad
The driver door module (DDM) receives inputs from the digital transmission range (TR) sensor, ignition switch, brake switch, window/door lock switches, lighting control module (LCM), keyless entry keypad switch and remote transmitter. The DDM outputs consists of keyless entry keypad switch illumination, power door lock actuators, luggage compartment release solenoid, horn relay, and lighting control module (LCM).
  • Battery junction box (BJB) fuses:
    • circuit breaker 7 (20A)
  • Central junction box (CJB)
    • 4 (10A)
    • 6 (15A)
    • 8 (25A)
    • 13 (5A)
  • Keyless entry keypad switch
  • Power door lock actuator
  • Luggage compartment release switch
  • Luggage compartment release solenoid
  • Connectors or connections
  • Wiring harness
  • If fuse's good have checked for DTC'S - diagnostic trouble codes .
  • B1526 Keyless Entry Circuit Short to Ground DDM Go To Pinpoint Test E . B1553 Decklid Release Circuit Short to Battery DDM Go To Pinpoint Test B . B1751 Park/Neutral Switch Circuit Short to Battery DDM Go To Pinpoint Test K . B2425 Remote Keyless Entry Out of Synchronization DDM Go To Pinpoint Test L Need a professional grade scan tool to check fro these codes . Not a code reader for OBD2 codes .
  • The doors do not lock/unlock using the remote transmitter
  • Remote transmitter not programmed.
  • Remote transmitter.
  • DDM.
  • Go To Pinpoint Test F .

Did you program the new key fob ?

Remote Transmitter Programming NOTE: All remote transmitters are programmable and must be set at the same time.
  1. Turn the key from OFF to RUN four times within three seconds, ending in RUN. The locks will then lock and unlock, confirming program mode has been entered.
  1. Press any button on each remote transmitter to be programmed. The doors will lock and unlock to confirm that each remote transmitter has been programmed.
  1. If additonal remote transmitters are to be programmed, repeat Step 3 within 7.5 seconds or steps 2 and 3 if more than 7.5 seconds have elapsed.
  1. To exit program mode, turn the ignition to START or wait 7.5 seconds.
  1. NOTE: Failure to wait at least 20 seconds will cause programming failures. Wait at least 20 seconds after turning the key to OFF or after the last remote transmitter has been programmed to activate a remote transmitter for testing or verification

Feb 19, 2017 | Cars & Trucks

1 Answer

I have a craftsman garage door opener, of which I tried to program a new remote. but it did not program. in the event I accidently errased my keypad password. How can I reprogram the keypad, i cannot...


Hello there,
It actually depends on what you are trying to program. And these instructions apply only to openers that do not have dip switches on them.
Remotes: push don't hold the colored learn code button all models have different colors. After pushing the button hold the remote behind your back and push it three times. On the third time the door should run.
Keyless Entry: Program the code you want into the keyless. Push the colored learn code button and then enter the code and push enter three times slowly. on the third time the door should run.
Home-Link. Hold the two outer buttons until the blinking pattern changes. Then hold the button you wish to program and point and click your remote at it. Push the colored learn code button and push the homelink button three times.
There are two models of the Wireless Keyless Entry System, the 740CB and the 940CB. The 940CB is for use only with Security+® garage door openers having an orange/red smart/learn button. The 740CB will work with all openers manufactured since 1990 that have a yellow, white, gray, or green smart/learn button. It will not work with Security+® openers.
To program the keyless entry, first locate the smart/learn button. On our chain drive models, this button is on the end farthest from the door. On our belt and screw drive models, it is on the right side as you face the door from the opener. You simply press and release the smart/learn button. You now have 30 seconds to enter your four digit PIN number into the keypad and hold the enter button for five seconds. Wait one minute and test the keyless entry by entering your four-digit PIN number and pressing enter.
With some Security+® models, you can also program your Model 940CB Wireless Keyless Entry without climbing a ladder, right from your Multi-Function Control Panel. Simply enter your pre-selected code and press and hold the enter button on your Keyless Entry. Then press and hold the light button and the pushbutton on your Multi-Function Control Panel. The garage door opener lights will flash to confirm that the Keyless Entry has been successfully programmed.
Hope this helped you solve the problem. All the best my dear friend. Elect_Comp

Sep 02, 2011 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Keyless entry does not unlock doors, open trunk, or start vehicle (remote start built onto keyless entry). Battery is new in BOTH remotes and neither one works. Could a fuse in vehicle be bad? Secondly,...


RFA / MOD fuse 10amp . location - insturment panel fuse box. Fuse Block - I/P
Right side of the I/P, behind the access panel
If the fuse is good your best bet would be to take it to a qualified repair shop , that doesn't mean the dealer . Lot of good independant repair shops around , just have to check the yellow pages.
Do you know what DTC'S are ? diagnostic trouble codes ! Not only the ones for the engine management system OBD 2 . There are also DTC'S for the remote keyless entry system , BCM - body control module. You need a factory or professional scan tool to view this codes
DTC B3101
DTC B3102
DTC B3103
DTC B3106

The remote control door lock receiver (RCDLR) communicates with the body control module (BCM) through the keyless entry serial data circuit. When any button on the keyless entry transmitter is pressed, the transmitter sends a signal to the RCDLR. The RCDLR sends a lock, unlock, or panic alarm request to the BCM, depending on which button is pressed on the transmitter. The BCM receives the message and performs the appropriate function. The BCM also uses the keyless entry serial data circuit in order to communicate with the RCDLR when programming transmitters. Do you know what serial data circuits are ?

DTC B3101 Keyless Entry Data Link Circuit Range/Performance
DTC B3102 Keyless Entry Data Link Circuit Low
DTC B3103 Keyless Entry Data Link Circuit High
DTC B3106 Keyless Entry Data Link Parity Error

This is what the factory manual said as to the location of power steering fluid reservoir ! Not much help , you would do better googling it.
The power steering fluid reservoir holds the power steering fluid and may be integral with the power steering pump or remotely located. The following locations are typical locations for the remote reservoir:
• Mounted to the front of the dash panel
• Mounted to the inner fender
• Mounted to a bracket on the engine

Aug 19, 2017 | 2005 Buick LaCrosse

1 Answer

Craftsman Model 139.53684 Keyless entry doesn't work


The remotes and keypad use the receiver which is part of the logic board.'t The button on the wall is hardwired and doesn't use the receiver. You might pull the logic board and check for bad connections on the printed circuit.

Nov 06, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

The Chamberlain wireless keyless entry model 940CD doesn't work. I changed the 9 volt battery, but it doesn't light up or do anything when I enter the password. It's like it's totally dead. I've had it for...


make sure it is the right keyless entry. For starters, Make sure your antenna hanging off the operator is "purple" color. If it is grey, you have the wrong keyless entry. The keyless you have is for the 315 frequency. If your antenna from the operator is grey, you need to get another keyless entry based on the frequency.

Oct 25, 2009 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

1999 lincoln con


SECTION 501-14B: Keyless Entry/Computer Operated Locks 1999 Town Car Workshop Manual GENERAL PROCEDURES Programming —Keyless Entry Keypad Code
  1. Enter the permanent factory keyless entry keypad code.
  1. Press the 1/2 button within five seconds to activate the programming mode. Holding the 1/2 button for more than two seconds will erase all stored customer codes. The existing codes do not need to be erased to program new codes.
  1. Enter the new five-digit keyless entry keypad code.
  1. To associate the new code with personality positions 1, 2 or 3, press the 1/2 button within 5 seconds of entering the 5th digit of the new code for position 1 or 3/4 button for position 2 or 5/6 for position 3. The door locks will lock and unlock confirming the new code is programmed.
  1. If another code is to be programmed, begin entering the code within 5 seconds of the last button pressed.
  1. After all new keyless entry codes are programmed:
    • Press keyless entry keypad buttons 7/8 and 9/0 at the same time to exit the program mode.
    • Wait for 5 seconds; the driver door module (DDM) will exit the program mode automatically.
    • -------------------------------------------------------------
Programming —Transmitter
  1. Cycle the ignition from OFF to RUN four times within three seconds. The locks will then lock and unlock, confirming program mode has been entered.
  1. NOTE: When the first keyless entry remote transmitter is programmed, all other keyless entry remote transmitters are erased.
    Press any button on the transmitter to be programmed.
  1. If additional keyless entry remote transmitters are to be programmed, repeat step 2 within 7.5 seconds.
  1. To exit program mode, turn the ignition to START or wait 7.5 seconds.
--------------------------------------------------
Programming —Remote Memory Activation NOTE: This procedure must be completed within 5 seconds.
  1. Press the SET button on the driver door panel.
  1. Press any button on the keyless entry remote transmitter to be associated with a memory setting.
  1. Press the 1 or 2 memory button on the driver door panel.
-------------------------------------------------------------
Programming —Autolock and Horn Chirp
  1. NOTE: This procedure must be completed within 30 seconds.
    Turn the ignition switch to RUN.
  1. Press the UNLOCK button three times.
  1. Turn the ignition switch to OFF.
  1. Press the UNLOCK button three times.
  1. Turn the ignition switch to RUN. The doors will lock and unlock to confirm entry into program mode.
  1. Press the UNLOCK button once to toggle the Autolock feature on or off, or twice to toggle the Horn Chirp function on or off. The horn will chirp to confirm toggling of the Autolock feature.
  1. Exit program mode by turning the ignition to OFF, START, or wait 7.5 seconds.
----------------------------------------------------------------------------------

Apr 07, 2009 | 1999 Lincoln Town Car

1 Answer

How can I fix my keyless entry --wont work (changed bettery)


my keyless entry does not work and i change my battery for both the remote is there another battery or fuse

Mar 23, 2009 | 2002 Chevrolet Suburban

3 Answers

I can't find the keyless entry code for my 2004 ford freestar


The code is on the fuse box under the dash near the hood release. On my van there are two bar codes on a sticker attached to the fuse box. Under the first bar code, on the right side is the 5 digit code (bring your glasses the numbers are really small). After you get this code, just search the internet and there are plenty of forums on programing the keyless remote and also adding your own unique number to the key pad entry.

Good Luck

Mar 08, 2009 | 2004 Ford Freestar

1 Answer

Keylees entry and remote controls do not work at the same time


There are two types of technology with this operator (rolling code and non-rolling code). This operator will except one or the other but not both. It is not uncommon for a rolling code (Security+) remote or keyless to lose the "rolling"part of its technology and become a non-rolling code device so it is not compatable with the rolling code technology. You will need to replace the one remote or keyless that is not like the others.

Nov 15, 2008 | Sears Craftsman LiftMaster Chamberlain...

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