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Posted: 5/17/2012 7:00:31 AM EDT
Just moved into a condo and it has one of these. I figured out how to set my own code, but it seems as though it has a few minutes of allowing you to hit the "Enter" button as many times as you want and it will still work.    That doesn't seem very secure.

And to top it off, this morning after I got out of the shower, I heard the garage opening up.  I ran out there, but nobody was around.  Wife was already at work and we don't even have an opener yet since the last tenant took it with her.  Old tenant lives next door now, so maybe her remote is still programmed to mine??  But I didn't think single button remotes could be programmed for more than one opener.  BTW, last tenant is a real bitch and won't give the landlord or me the old remote since her new condo didn't come with a remote.  Landlord is buying me a new one.

Opener is just a standard 1/2HP Chamberlain.  Manufacture date of 2010.  

Thanks for the help.
Link Posted: 5/17/2012 7:01:46 AM EDT
[#1]
There should be a reset button of some sort that clears out all the remotes and keypads.

Then you should be able to program the ones you have.
Link Posted: 5/17/2012 7:03:17 AM EDT
[#2]
The old Chamberlain I had used DIP switches to set the code.   Don't know about newer ones.
Link Posted: 5/17/2012 7:05:09 AM EDT
[#3]
From the Chamberlain customer support site:

How do I erase the remote control from the garage door opener's memory?

The memory in the garage door opener must be erased to prevent an unwanted remote control from operating the garage door opener.

To erase the memory perform the following steps:

NOTE: Erasing the memory will remove ALL remote controls and keyless entry codes from the garage door opener.

   Locate the "Smart/Learn" Button on the back or side of the motor unit; generally this is on the same side as the antenna wire. You may need to remove a light lens cover or open a control panel to gain access. The "Smart/Learn" Button may be Green, Orange, Red, or Purple, and will have a small LED next to it.
   Press and hold the "Learn" button on the motor unit until the learn indicator light goes out (approximately 6 seconds).

   All previous codes are now erased.


Basic Programming Steps

   Locate the Learn button.
       Garage door opener: Located on the back or side of the motor unit (you may have to remove the light lens). The Learn button may be green, orange, red, purple, or yellow with a small LED next to it.
       Gate operator or commercial door opener: Located on the control or logic board, with a small LED next to it.
   Press and release your Learn button.
   Within 30 seconds, press and hold the desired button on the remote control.
   Press the remote control again when the opener lights blink. The operator or opener should activate. If not, repeat the steps.
Link Posted: 5/17/2012 7:07:23 AM EDT
[#4]
Quoted:
From the Chamberlain customer support site:

How do I erase the remote control from the garage door opener's memory?

The memory in the garage door opener must be erased to prevent an unwanted remote control from operating the garage door opener.

To erase the memory perform the following steps:

NOTE: Erasing the memory will remove ALL remote controls and keyless entry codes from the garage door opener.

   Locate the "Smart/Learn" Button on the back or side of the motor unit; generally this is on the same side as the antenna wire. You may need to remove a light lens cover or open a control panel to gain access. The "Smart/Learn" Button may be Green, Orange, Red, or Purple, and will have a small LED next to it.
   Press and hold the "Learn" button on the motor unit until the learn indicator light goes out (approximately 6 seconds).


   All previous codes are now erased.


Basic Programming Steps

   Locate the Learn button.
       Garage door opener: Located on the back or side of the motor unit (you may have to remove the light lens). The Learn button may be green, orange, red, purple, or yellow with a small LED next to it.
       Gate operator or commercial door opener: Located on the control or logic board, with a small LED next to it.
   Press and release your Learn button.
   Within 30 seconds, press and hold the desired button on the remote control.
   Press the remote control again when the opener lights blink. The operator or opener should activate. If not, repeat the steps.


I forgot to mention that I saw those instructions on the back and held the button down for 10 seconds and watched the light go out.  Then programmed the new keypad.  But it still opened on it's own this morning, so I wasn't sure if I missed something.
Link Posted: 5/17/2012 7:08:43 AM EDT
[#5]
Quoted:
The old Chamberlain I had used DIP switches to set the code.   Don't know about newer ones.

We have a Chamberlain that was made in the late 90's.  IIRC, it uses some kind of algorithm that rotates the code and the procedure that Shenanigunz posted refreshes it.
Link Posted: 5/17/2012 7:09:04 AM EDT
[#6]
Also, are those "Lock" buttons on the panel worth a damn?  Because I hit it last night before going to bed.  So that should have prevented any remotes from working, right?

Link Posted: 5/17/2012 7:10:56 AM EDT
[#7]
Quoted:
Also, are those "Lock" buttons on the panel worth a damn?  Because I hit it last night before going to bed.  So that should have prevented any remotes from working, right?



Well, we did that by accident once and it effectively locked us out of the garage.

Not sure how hard it is to defeat, but it the receiver is shut off....
Link Posted: 5/17/2012 7:11:59 AM EDT
[#8]
Quoted:
Quoted:
Also, are those "Lock" buttons on the panel worth a damn?  Because I hit it last night before going to bed.  So that should have prevented any remotes from working, right?



Yes, we did that by accident once and it effectively locked us out of the garage.


Do you have to hold it down?  I just tapped it, but didn't see any response from the light or anything.

Link Posted: 5/17/2012 7:15:58 AM EDT
[#9]
Quoted:
Quoted:
Quoted:
Also, are those "Lock" buttons on the panel worth a damn?  Because I hit it last night before going to bed.  So that should have prevented any remotes from working, right?



Yes, we did that by accident once and it effectively locked us out of the garage.


Do you have to hold it down?  I just tapped it, but didn't see any response from the light or anything.


On ours you press and hold for 2 seconds.  The indicator light comes on and stays on.
Link Posted: 5/17/2012 7:17:40 AM EDT
[#10]
Link Posted: 5/17/2012 7:18:41 AM EDT
[#11]
Quoted:
Just moved into a condo and it has one of these. I figured out how to set my own code, but it seems as though it has a few minutes of allowing you to hit the "Enter" button as many times as you want and it will still work.    That doesn't seem very secure.

And to top it off, this morning after I got out of the shower, I heard the garage opening up.  I ran out there, but nobody was around.  Wife was already at work and we don't even have an opener yet since the last tenant took it with her.  Old tenant lives next door now, so maybe her remote is still programmed to mine??  But I didn't think single button remotes could be programmed for more than one opener.  BTW, last tenant is a real bitch and won't give the landlord or me the old remote since her new condo didn't come with a remote.  Landlord is buying me a new one.

Opener is just a standard 1/2HP Chamberlain.  Manufacture date of 2010.  

Thanks for the help.


I think you are being a lot more calm about this than I would be.

Link Posted: 5/17/2012 7:20:48 AM EDT
[#12]
Quoted:
Quoted:
Just moved into a condo and it has one of these. I figured out how to set my own code, but it seems as though it has a few minutes of allowing you to hit the "Enter" button as many times as you want and it will still work.    That doesn't seem very secure.

And to top it off, this morning after I got out of the shower, I heard the garage opening up.  I ran out there, but nobody was around.  Wife was already at work and we don't even have an opener yet since the last tenant took it with her.  Old tenant lives next door now, so maybe her remote is still programmed to mine??  But I didn't think single button remotes could be programmed for more than one opener.  BTW, last tenant is a real bitch and won't give the landlord or me the old remote since her new condo didn't come with a remote.  Landlord is buying me a new one.

Opener is just a standard 1/2HP Chamberlain.  Manufacture date of 2010.  

Thanks for the help.


I think you are being a lot more calm about this than I would be.



I went to school with the property manager.  He's cool as hell and warned me that the old tenant was a PITA.  He's getting me a couple new openers.  

Or are you talking about it opening by itself?
Link Posted: 5/17/2012 7:35:07 AM EDT
[#13]
Quoted:
Quoted:
Quoted:
Just moved into a condo and it has one of these. I figured out how to set my own code, but it seems as though it has a few minutes of allowing you to hit the "Enter" button as many times as you want and it will still work.    That doesn't seem very secure.

And to top it off, this morning after I got out of the shower, I heard the garage opening up.  I ran out there, but nobody was around.  Wife was already at work and we don't even have an opener yet since the last tenant took it with her.  Old tenant lives next door now, so maybe her remote is still programmed to mine??  But I didn't think single button remotes could be programmed for more than one opener.  BTW, last tenant is a real bitch and won't give the landlord or me the old remote since her new condo didn't come with a remote.  Landlord is buying me a new one.

Opener is just a standard 1/2HP Chamberlain.  Manufacture date of 2010.  

Thanks for the help.


I think you are being a lot more calm about this than I would be.



I went to school with the property manager.  He's cool as hell and warned me that the old tenant was a PITA.  He's getting me a couple new openers.  

Or are you talking about it opening by itself?


The old tenant keeping the remote, and it opening by itself.  

I guess if the owner is sharing his frustration with the old tenant with you, it's hard to be pissed - but you still have a serious security / vulnerability issue here.
Link Posted: 5/17/2012 7:37:11 AM EDT
[#14]
Quoted:
Quoted:
Quoted:
Quoted:
Just moved into a condo and it has one of these. I figured out how to set my own code, but it seems as though it has a few minutes of allowing you to hit the "Enter" button as many times as you want and it will still work.    That doesn't seem very secure.

And to top it off, this morning after I got out of the shower, I heard the garage opening up.  I ran out there, but nobody was around.  Wife was already at work and we don't even have an opener yet since the last tenant took it with her.  Old tenant lives next door now, so maybe her remote is still programmed to mine??  But I didn't think single button remotes could be programmed for more than one opener.  BTW, last tenant is a real bitch and won't give the landlord or me the old remote since her new condo didn't come with a remote.  Landlord is buying me a new one.

Opener is just a standard 1/2HP Chamberlain.  Manufacture date of 2010.  

Thanks for the help.


I think you are being a lot more calm about this than I would be.



I went to school with the property manager.  He's cool as hell and warned me that the old tenant was a PITA.  He's getting me a couple new openers.  

Or are you talking about it opening by itself?


The old tenant keeping the remote, and it opening by itself.  

I guess if the owner is sharing his frustration with the old tenant with you, it's hard to be pissed - but you still have a serious security / vulnerability issue here.


That's why I unplugged it today.  I thought I cleared the memory last night, but maybe not.  

I'm going to talk with old tenant tonight and see if her remote is why it opened.  She was a royal bitch last night.  One of those "my shit don't stink" people, so who knows how it will go.

Link Posted: 5/17/2012 6:50:50 PM EDT
[#15]
Unplugging the opener won't clear the codes.  Think about it:  If it did, then you would have to reprogram the remotes every time you had a power dropout.

However, there IS a way to reset them.  If you check your manual you should find it.  It wipes out the current code rotation and then you have to re-associate each remote manually.  Any old remotes would no longer work.
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