Trouble changing passwordon model 940CB wireless keyless entry

Easyer then that , you die! Open your garage door, take out the step ladder, a chair or get up on *********** in law's back, (here's your chance to be on her back for a change) press the read button of your unit (motor) a led should light up and on the key pad, key in the new 4 digits code and press enter, the light of the unit should blink javascript:; Post Solution

Forgot password and cant change nothing works

I took a ladder went up and pushed the learn button once. The light comes on steady, then go to the remote and put in the 4 digit code you want and press enter. That's it, it worked.

In Canada Chaimberlain has a really helpful telephone line with an IVR that does get you to the fix quickly. And it did solve my issue with the remote. My problem was the previous owner of the house did not leave the code. The basic steps were.
1. Make sure the battery is good.
2. On the motor unit of the actual garage door opener press the learn button, mine was under a white plastic bulb cover that I had to remove.
3.While the learn button LED remains on for 30 seconds, on your keyless remote type in your four didget code that you want and then hold down the enter button for 5 seconds.
4. The light on the motor unit then started to flash confirming it had learned the code from the keyless remote.
5. Try the keyless remote by pressing your four didget code, then pressing enter. Your door should work.

To the guest's question. normally on liftmaster products you need to hold the 'learn' button on the back of the operator for 8-10 secs (till the led goes out). Then have all your remotes and keypad handy and reprogram them all. Push the button on the back of the unit then one of the remotes (1-2 sec) light will flash. Then repeat for the keypad press button and go enter your 4 digit code and hold enter 1-2 sec.

You can download the re-set instructions here:
Liftmaster 971LM Programming Instructions

LiftMaster 976LM Security+ Wireless Keyless Entry System

• LiftMaster Wireless Keyless Entry System with Security+ Anti-Burglary Coding
• Compatible with ALL Security+ systems, including Chamberlain, Sears, Craftsman and Raynor code rolling residential openers (Safety Signal)
• Compatible with Liftmaster remotes models 91LM, 96LM, 970LM, 971LM, 972LM, 973LM, 974LM.
• Compatible with Chamberlain remotes models 950CB, 953CB, 956CB.
• Compatible with Sears remotes models 139.53681 and 139.53680
• This unit is the same as the Chamberlain model 940CB, Sears model 139.53684 and the Liftmaster 67LM (old model number)
• Compatible with garage door opener operator model numbers 1240R, 1245R, 1246R, 1255R, 1256R, 1265, 1280R, 1000SDR, 2000SDR, 1245 GMR, 1255GMR
• Compatible with Security+ garage opener receiver model numbers 335LM, 535LM, 412HM, 635LM
• Easy mounting to your garage door jamb with just 2 screws
• Lets you open your garage door without remote control or keys
• Code changes every time you use this unit (defeats code grabbers)
• Over 100-billion codes for maximum security, compatible with models manufactured from 1997-present WITH an orange or red "learn" button.
• This Keyless Entry also features a temporary password option to let you give friends, relatives or maintenance people limited access

Hi Syls

Click HERE to view the online manual.

Is the buttons flashing the required two times once you've held in the # key ?

Try setting up a temporary pin first and then changing it back to a normal one again.

Let me know once you've tried it please.

Enter first the default password. default password is listed in manual, I think it is 1234

This might be a helpful website for you

http://www.aaaremotes.com/liftmaster.html