How do you program the garage door buttons in a 2009 Porsche 911

The control is made by HomeLink. You can find instructions on how to program your specific type of garage door here:

http://www.homelink.com/program

Here are the basic steps for a "Genie" garage door opener:

1. For first time training, press and hold the two outer HomeLink buttons, releasing only when the HomeLink indicator light begins to flash, which may take up to 20 seconds. (Do not perform this step when training the additional HomeLink buttons.)
2. Press the appropriate HomeLink button I, II or III which you want to train and keep holding it until the indicator light starts flashing slowly. Once the indicator light starts flashing slowly, you may release the button. HomeLink is now in "training mode."You will now have 5 minutes to train your hand-held transmitter to the HomeLink transmitter in the bumper.
3. Stand in front of your vehicle with the original hand-held transmitter for the garage door opener (or other device) that you wish to train.The transmitter unit to be trained is located in the bumper about 4 inches to the left of the vehicle's center.
4. Hold the original hand-held transmitter between 0-12 inches from your car's bumper. NOTE: The distance between the hand-held transmitter and the HomeLink transmitter unit in the bumper depends on the system being trained. It may require several attempts at different distances in order to pick up the signal.
5. Now press and hold the button on your original garage door transmitter while keeping your fog lights in view. The fog lights will blink three times to indicate that the training has been successful.NOTE: If the training time exceeds the five minutes, the fog lights blink once. If this happens, you should repeat steps 2 to 5.
6. Press and hold the trained HomeLink button and observe the indicator light.
   • If the indicator light is solid/continuous, training is complete and your device should activate when the HomeLink button is pressed and released.
   • If the indicator light blinks rapidly for 2 seconds and then turns a solid/continuous light, proceed with Steps 7-9 for a rolling code device. A second person may make the following steps easier. Please use a ladder or other device; do not stand on your vehicle to perform the next steps.
7. At the receiver (motorhead unit) in the garage, locate the "learn" or "smart" button (usually near where the hanging antenna wire is attached to the unit). If there is difficulty locating the training button, reference the garage door opener's manual.
8. Press and release the "learn" or "smart" button (the name and color of the button may vary by manufacturer). NOTE: Once the button is pressed, you have approximately 30 seconds to initiate the next step.
9. Return to the vehicle and firmly press and hold the trained HomeLink button for two seconds and release. Repeat the "press/hold/release" sequence up to 3 times to complete the training process.