Programming multiple remote door openers I am trying to add a remote key pad to the exterior of the door. When that is programmed and working it knocks out the car remote. I have 2 of those. How do I get all three to operate?

I have 2 garage doors side by side with model 3280 liftmaster door openers. One of the doors began to open randomly/phantom style! After resetting the codes and checking for staples causing malfunction/shorts and replacing the circuit boards in the wall remote, none of which made a difference,I had the dealer come out and change out the entire opener/ wires/ remotes etc. The following day my "other" opener started doing the same thing-opening randomly--something that only the door beside this one was doing before the new opener was installed. This lead me to believe that it might have something to do with the wireless keypad on the exterior of the garage-(which was the only common denominator with the other side-by-side door. The new opener installed was not compatible with the older model so I knew that there was no interference with the signals from the old and new remotes. I put in a new battery and it still opened phantom style- so I would always activate the "lock" feature on the interior wall mount wired remote to make sure that the door would not open--this worked fine, however, it is a pain in the but to have to get out of your vehicle to close the door via the exterior keypad. Finally, I pulled the battery out of the wireless key pad and the garage door never opened randomly again
I tried reprogramming the keypad with other "temporary codes" and it would not allow them to be programmed--this was also an indication that the wireless keypad and the opener were not cooperating--once I replaced my exterior key pad with a new one--the problem of phantom./random openings was solved. Hopefully some garage door people will read this and get some "much needed" knowledge regarding the "Random Garage Door Openings" which I am sure will haunt home owners-but, if you are reading this info--you now know what your options are for saving some $$ as well as your security and sanity...

You have to erase the receiver memory on both receivers and start over again. Do not do them at the same time.

If you didn't, try programming the remote this way.

Press and hold the button on the remote and then press and immediately release the smart/learn button on the motor unit. If this doesn't work you need to make sure you have the correct remote for the model opener you have. Your model number doesn't bring any results from Sears Parts.com.

To Program Wireless Remote Transmitters:
Begin with:
The driver's door open and unlocked.
Key out of the ignition.
1.Insert and remove the key from the ignition switch 2 times within 5 seconds.
Steps 2 and 3 should be performed within 40 seconds.
2.Close and open driver's door TWICE.
3.Insert the key into the ignition and remove it.
Steps 4 - 6 should be performed within 40 seconds.
4.Close and open the driver's door twice.
5.Insert the key into the ignition.
6.Close the door.
7.Turn the ignition switch from "Lock" to "On" and back to "Lock" at about 1 second intervals to select the desired mode:
1 time for ADD mode.
2 times for REWRITE mode.
3 times for CONFIRMATION mode.
5 times for PROHIBITION mode.
8.Remove the key from the ignition.
9.To confirm your mode selection, the power locks will now cycle "lock" to "unlock" a number of times corresponding to your key cycles in step 7.
If Confirmation or Prohibition modes have been selected, opening the door will complete the procedure.
10.For Add or Rewrite modes do the following within 40 seconds of Door Lock confirmation:
A.Press both transmitter Lock and Unlock buttons simultaneously between 1 and 1.5 seconds and release.
B.Within 3 seconds of step A press the transmitter Lock button for more than 1 second and release.
^If the transmitter has been successfully programmed, the power locks will cycle "lock" to "unlock" once at this time.
^If there are problems with the transmitter or the procedure up to this point, the locks will cycle twice. If this occurs, verify that you have received the correct transmitter, and then repeat the above procedure.
C.If multiple remotes are to be reprogrammed, repeat steps A and B.
11.Open the driver's door to conclude programming mode.

1. Remove key from ignition.
2. Close all doors.
3. Open driver side door and leave open.
4. Insert key in ignition, Turn key to ON (as far as you can go without starting the engine) and OFF, Remove Key.
5. Repeat step 4 two more times, making sure you remove key each time.
6. Close and then open the driver’s door three times.
7. Buzz sound or chime should be heard at this point signaling that the vehicle is now in programming mode. If not,
wait 40 seconds and return to step 1.
8. All transmitters need to be programmed at this time, including the old ones. Push any button on a transmitter two
times. A buzz sound to chime should be heard at this point signaling that the vehicle has accepted the new
transmitter code. Repeat for next transmitter, up to a total of three remotes (including any old remotes).
9. After all remotes are programmed, wait 15 seconds or until you hear four chimes signaling successful
programming.

Good luck and this should work.

This is generally caused by one remote reverting to an earlier technology. They will each work individually when programmed but will not work with one another. One of them should work with the keypad. Find out which one does and replace the other. Make sure you purchase the identical model number.

some door openers have a limited memory or a maximum number of remotes allowed this is usually 5-8 total entries. I works this way as you enter a device is progams into slot 1 on the memory then the next entry goes into memory 2 etc. if you exceed the number of memory slots then hte 1st one will be omited. You may have overridden your keyless if you have multiple remotes plus you car(s) may exceed your limit or you had several attempts with the keypad that used up the available slots. I recommend you try to reset the remotes now that you have successfully programed the keyless. If you find that reprogramming the remotes knocks out the new key pad then repeat the steps with all the remotes in sequence one after another. good luck

sounds like you are doing keypad ok. is battery good. as far as homelink in car. follow directions for rolling code/security plus.

SYSTEM OPERATION

System warning lamp located on top of the instrument panel
Press UNLOCK button once , turns on interior lamps and deactivates alarm (if fitted)
Press UNLOCK button twice w/in 5 seconds unlocks all doors, turns on interior lamp and deactivates alarm (if fitted)
To activate alarm system (if fitted):
Switch ignition OFF
Open driver's door
Press Lock button on remote
Close Driver door
warning lamp will flash when system is activated
Press remote power sliding door button will open sliding door (if fitted) only if unlocked first
Pressing remote panic button:
*Sounds horn intermittently
*Flashes exterior lamps
*Turns on interior lamps
**Pressing panic for the second time OR switching ignition ON deactivates alarm.


PROGRAMMING
Remobe key from ignition switch
Remove the "BCM PRGRM" fuse, from the fuse box
Close all doors
Turn ignition switch to the ACC position
With in 1 SECOND , turn the ignition switch to OFF then back to 'ACC'
(really, with in one second)
Open and close the driver's door. A chime will sound, indicating programming mode activated
Press and HOLD LOCK and UNLOCK SIMULTANEOUSLY untill a chime sounds 2 times ( about 15 seconds)
Repeat this exact procedure for all remotes to be programmed
Remove key from ignition
Refit 'BCM PRGRM' fuse.

4 REMOTES MAXIMUM CAN BE PROGRAMMED

Hi All,

I had the same issue recently and here's what I found out (through a LOT of research) and the solution (yes, there is one!):

As described by many, when you can't get both the remote and the wireless pad to work together it means your garage door opener can accept both rolling code and billing code technology, BUT not at the same time. When you reset all codes (normally by pressing a button on the opener for a period of time e.g. 6 seconds or more), you erase all codes and remote "pairings". Then when you follow the manufacturer's procedure to pair again (which could be the wireless key pad first OR the remote first), the first pairing determines the technology for all subsequent pairings. Example: if your first pairing/programming was with the wireless keypad, and if it was rolling code technology (normally the case for newer models), then the garage opener will only recognize and accept rolling code for subsequent pairings. If your remote(s) are older (billion code technology) then the opener won't even recognize the signal (e.g. led won't blink when trying to pair/program).

And vice versa if you start with your remote after erasing all programming (then your keyless pad won't work).

But here is a potential workaround! For newer wireless keypads (e.g. clicker from chamberlain), you have an option to select the type of opener you are using as you do the initial password set up (normally indicated by a number e.g. 1 for models built after 1995, 2 for models built between 1997 and 2004, etc). Each choice is associated with a technology in the background (e.g. either rolling code or billion code). If you are programming your wireless keypad first after erasing all codes / programming, if you chose the "recommended" option for garage opener, chances are it will be rolling code and that means you won't be able to program your older remotes (billion code) after that. So how can you chose the option that will match your remote???

Here's what you do: start by pairing / programming your older remote first after erasing all codes / programs. That sets the technology (e.g. billion code). Then, go ahead and program your wireless keypad, but you may have to go through the process several times by trying the different options until you find one that works!

For me, I had to try 4 options before making it work. Options 1 through 3 (mind you, options #2 was the exact match for my garage door opener model but it would cause the problem discussed here e.g. wireless keypad would work but not the remotes) would not even be recognized by the opener in this procedure (LED would not blink), but it did work once I hit option 4.

I hope this will help you with your problem. Let me know if it's not clear. Cheers!