My garage door transmitter is mot working, if I buy a new one, how to set the code?

Ounce you reset ALL code of the garage door opener (engine hook up to the ceiling of the garage that open up the door), ounce you press the reset button on the unit, it disable all transmitter (portable or the one install in your vehicle). Your garage door opener has a receiver in it and your all units that you press on to open the door are the transmitter, so by pressing the reset button on the door opener, you erase all codes of all the transmitter that where programmed to open-up that door.

So if you teach your vehicle using a portable unit and you now reprogram your new vehicle with the SAME portable transmitter, then yes who ever has your stolen vehicle can come back with your stolen vehicle to your house and open up your garage door since you re-programmed the door opener using the SAME transmitter same code sent to the unite to active it).

Buy a new transmitter to re-programmed your new vehicle

The following are steps to programming a rolling code door opener to the Homelink transmitter in the Touareg.

The instructions in the owner's manual are correct, but after following them, my garage door installer and I discovered a few quirks and fixes for them.

It is important to park the Touareg in front of the garage door. Be careful not to park underneath it.

If your remote garage door transmitters are already programmed to your door opener, you need to do the following steps:

1. On the garage door opener itself, there is a learn button. Press and hold down the learn button until the learn indicator light goes out (approx. 6 seconds). (The learn button is near the antenna on your door opener.) By doing this, you have just reset the codes. At this point your remote door transmitters will most likely not work. This is o.k.

2. In the Touareg, press and hold whichever homelink button you want to program until the light above the homelink buttons slowly blinks. Continue to hold the button in and at the same time, hold your remote transmitter underneath the map lights and press the button. Continue to press both buttons until the homelink light rapidly flashes. Let go of both buttons.

3. You now have 30 seconds to press the learn button on your garage door opener. Press it once. The light will start to blink.

4. Go back to the Touareg, press and hold the homelink button you just programmed for 3 seconds until you get a blinking light. Repeat again. This time, it should open or close the door. The homelink button is now programmed.

5. Now that the homelink button is programmed, you now have to re-program your remote transmitters. Take the transmitters with you.

6. On the garage door opener, press the learn button, the light will blink. Now press the button on the remote transmitter. The light should stop blinking. Repeat the step if you have more than one transmitter. You should be all set. The homelink button should work in the Touareg and your remote transmitter(s) should also work.

In summary, the rolling codes in the door opener receiver have to be reset. For some reason, the Touareg has to be programmed FIRST. Then the remote transmitter units. If the remote transmitter units are already programmed, you will most likely not be able to program the homelink in the Touareg for a rolling code door opener.

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Original Launch X-431 DIAGUN III

Make sure you are using the correct procedure to program the keypad.

Locate the smart/learn button on the rear of the motor unit near where all those white wires go. Press and immediately release this and then walk over to the keypad and key in any 4 digit code you like and press enter.

Are you having problems while using the remote transmitter, but not the local control? Try changing the battery in the remote unit. If the battery is new, the transmitter may be drifting it's output frequency somewhat causing poor execution. Do you have two transmitters and one works better than the other? Either have the poor transmitter checked by the dealer or buy a new transmitter--whichever is cheaper. Hope this helps!

To change the code you need to locate the smart/learn button which is near where all those white wires go. Press and immediately release it and then walk over to your keypad and key in any 4 digit code you like and press enter.

See if this works for your car.

1. Clear out anything previously programmed into the in-car system from the factory by holding down on the 2-outside buttons simultaneously, until the in-car LED starts flashing rapidly. This may take up to a minute (in most cases, the key should be on auxillary, and/or the car door must be shut).
   
2. Decide which button you want to make to be your in-car garage door transmitter. Hold your transmitter up near the selected button, pressing both the garage door remote and the selected in-car transmitter button simultaneously. Hold down on the buttons until the in-car, LED light flashes rapidly. This sets the in-car remote transmitter to be your garage door openers make transmitter, but you are not done. You now need to make this in-car transmitter your personal transmitter.
   

3. Go to the Learn Button on your garage door opener. The button is usually next to the area where the floppy antenna is connected to the motor head. With Genie it is most often behind the light lens, and an indicator light flashes red when pressed. With Sears or Liftmaster (Chamberlain) it is near, or part of, the terminal screw board, and is a red, green or purple square button with a green, amber or purple indicator light. Press this learn button momentarily. The indicator light will turn on and blink if Genie or otherwise stay lit. For Genie systems, go back to the in-car transmitter button you programmed and press this button 3 or 4 times, or until the door starts moving. This should set your in-car transmitter to your garage door opener. For Liftmaster, Sears, or Linear Megacode press and hold the in-car button you programmed until the garage opener light flashes. Your in-car is now programmed to operate your door.

1. Clear out anything previously programmed into the in-car system from the factory by holding down on the 2-outside buttons simultaneously, until the in-car LED starts flashing rapidly. This may take up to a minute (in most cases, the key should be on auxilary, and/or the car door must be shut).
   
2. Decide which button you want to make to be your in-car garage door transmitter. Hold your transmitter up near the selected button, pressing both the garage door remote and the selected in-car transmitter button simultaneously. Hold down on the buttons until the in-car, LED light flashes rapidly. This sets the in-car remote transmitter to be your garage door openers make transmitter, but you are not done. You now need to make this in-car transmitter your personal transmitter.
   

3. Go to the Learn Button on your garage door opener. The button is usually next to the area where the floppy antenna is connected to the motor head. With Genie it is most often behind the light lens, and an indicator light flashes red when pressed. With Sears or Liftmaster (Chamberlain) it is near, or part of, the terminal screw board, and is a red, green or purple square button with a green, amber or purple indicator light. Press this learn button momentarily. The indicator light will turn on and blink if Genie or otherwise stay lit. For Genie systems, go back to the in-car transmitter button you programmed and press this button 3 or 4 times, or until the door starts moving. This should set your in-car transmitter to your garage door opener. For Liftmaster, Sears, or Linear Megacode press and hold the in-car button you programmed until the garage opener light flashes. Your in-car is now programmed to operate your door.

If this doesn't work your car and homelink may not be compatible.

There are 3 programmable Homelink buttons you can use for different remotes. Just to the right of the buttons there is an indicator light.

Decide which button you want to program. Point the none battery end of your remote 1"-3" away from the Homelink panel and press both the remote and desired Homelink button down and hold them down at the same time. After about 20 seconds, the Homelink indicator light will change from a slow flashing to a rapid flashing. You can then release both buttons,
If the garage door responds to the Homelink, your done! If not, your garage door uses a rolling codes transmitter and must be trained.
Find the training button on your garage door opener's transmitter (usually mounted on the ceiling). Press the training button and within 30 seconds press and release the programmed Homelink button twice. If the garage door opener operates, you're done! If not, press and release the Homelink button a third time and the garage door should respond. If it still does not, you may have a very old garage door opener with a none digital transmitter (like I did). In that case, you either need to buy a new opener or try to replace the transmitter with a modern digital unit (as I did). Advantage: cheaper than a whole new garage door opener.
Disadvantage: The newer openers incorporate safety features that my old opener does not have.

THE TRANSMITTER YOU NEED IS AVAILABLE AT MOST GARAGE DOOR SUPPLIERS - SEARS DOES NOT CARRY IT.

62LM SHOULD WORK WITH YOUR SYSTEM.

Verify the hand-held transmitter is operative.
Prepare for programming the universal transmitter by erasing all three channels (hold down the two outside buttons until the red light begins to flash [20-30 seconds]). Release both buttons.
Select one of the three universal transmitter channels to be programmed by pressing the desired button
Hold the end of the hand-held transmitter 25-51 mm (1-2 in) from the front surface of the universal transmitter so that the red light can still be seen
Use both hands to press the hand-held transmitter button and the desired button on the universal transmitter. Do not release either button.
Hold down both buttons until the red light on the universal transmitter flashes, first slowly and then rapidly. Release both buttons when the rapid flashing begins. The universal transmitter has successfully learned the new frequency signal and can be used in place of the hand-held transmitter(s).
If the hand-held transmitter appears to program the universal transmitter but does not open the garage door, the garage door opener may have a code protected or rolling code feature.
To operate, simply press the appropriate button on the universal transmitter. The red light is on while the signal is being transmitted.
IF THE GARAGE OPENER HAS ROLLING CODES---
program as above then------
Train the garage door opener receiver to recognize the universal transmitter.
Remove the cover panel from the garage door opener receiver.
Locate the training button on the garage door opener receiver. Location and color of the button may vary by garage door opener manufacturer. Refer to the garage door opener instruction manual or owner literature.
Press the training button on the garage door opener receiver for 1-2 seconds.
Press the programmed universal transmitter button for as long as the universal transmitter red light flashes (1-2 seconds). Release the button and re-press the button to confirm that the universal transmitter is trained to the receiver.
The garage door opener should recognize the universal transmitter.

There is a "learn" button on the garage door opener unit itself that you press before entering a code on the outside transmitter. This allows the receiver to learn a new code. The button is on the rear end of the housing near the terminals where the inside operation pushbutton connects.
Here's a link to programming instructions for a compatible unit by another manufacturer:
http://www.usdoorcontrol.com/instructions/liftmaster/keypads-66LM.pdf