ADD KEY (Must have two working original keys):
1. Insert the first previously programmed coded keys into the ignition.
2. Turn the ignition from the 1 (LOCK) position to the 3 (RUN) position. Keep the ignition in the 3 (RUN) position for at least 3 seconds, but no more than 10 seconds.
3. Turn the ignition to the 1 (LOCK) position and remove the first coded key from the ignition.
4. Within 10 seconds of turning the ignition to the 1 (LOCK) position, insert the second previously coded key into the ignition.
5. Turn the ignition from the 1 (LOCK) position to the 3 (RUN) position. Keep the ignition in the 3 (RUN) position for at least 3 seconds, but no more than 10 seconds.
6. Turn the ignition to the 1 (LOCK) position and remove the second coded key from the ignition.
7. Within 20 seconds of turning the ignition to the 1 (LOCK) position and removing the previously programmed coded key, insert the new un-programmed key (new key/valet key) into the ignition.
8. Turn the ignition from the 1 (LOCK) position to the 3 (RUN) position. Keep the ignition in the 3 (RUN) position for at least 6 seconds.
9. Remove the newly programmed coded key from the ignition.

If the key has been successfully programmed, it will start the vehicles engine and will operate the remote entry system (if the new key is an Integrated Keyhead Transmitter).
The theft indicator light will illuminate for 3 seconds and then go out to indicate successful programming.
If the key was not successfully programmed, it will not start your vehicles engine and/or will not operate the remote entry features.
The theft indicator light may flash on and off. Wait 20 seconds and you may repeat Steps 1 through 8.
If the failure repeats, bring your vehicle to your authorized dealer to have the new key(s) programmed.
To program additional new un-programmed key(s), wait 20 seconds and then repeat this procedure from Step 1.

Step by Step How to Program Instructions:

Use these instructions if your Ford Taurus has the remote/key combo system.

You must have two previously programmed keys and the new unprogrammed key readily accessible. If you only have one working key then you will have to have a Locksmith program a second key with special equipment.

1. Insert the first previously programmed key into the ignition.
2. Switch the ignition from off to on. Keep the ignition on for at least three seconds, but no more than 10 seconds.
3. Switch the ignition off and remove the first programmed key from the ignition.
4. After three seconds but within 10 seconds of switching the ignition off, insert the second previously programmed key into the ignition.
5. Switch the ignition from off to on. Keep the ignition on for at least three seconds, but no more than 10 seconds.
6. Switch the ignition off and remove the second previously programmed key from the ignition.
7. After three seconds but within 10 seconds of switching the ignition off and removing the previously programmed key, insert the new unprogrammed key into the ignition.
8. Switch the ignition from off to on. Keep the ignition on for at least six seconds.
9. Remove the newly programmed key from the ignition. If the key has been successfully
programmed it will start the engine and operate the remote entry system (if the new key is an integrated keyhead transmitter). If it was not programmed successfully, wait 10 seconds and repeat Steps 1 through 8.

Use these instructions if your Ford Taurus has the smart key system.
Note: You can program a maximum for four smart keys to your vehicle.

You must have two previously programmed keys and the new unprogrammed key readily accessible. If you do not have two previously programmed keys you will need a Locksmith to cut and program a second key.

Ensure that the vehicle is off before beginning this procedure. Ensure that all doors are closed before beginning this procedure and that all doors remain closed throughout the procedure. Perform this procedure exactly as described below, and perform all steps within 30 seconds of starting the sequence. If any steps are performed out of sequence, stop and wait for at least one minute before starting again.

Please read and understand the entire procedure before you begin.

1. Place the new unprogrammed Smart Key in the pocket inside the center console utility compartment.
2. Press the driver or passenger power door unlock control three times.
3. Press and release the brake pedal one time.
4. Press the driver or passenger power door lock control three times.
5. Press and release the brake pedal one time. The indicator on the Start/Stop button should begin to rapidly flash, indicating that programming mode has been entered and two programmed Smart Keys have been detected in the vehicle.
6. Within one minute, press the start/stop button. A message will be displayed on the message center indicating that the new Smart Key was programmed. If four Smart Keys have already been programmed to your vehicle, you cannot program anymore and the message MAX # OF KEYS LEARNED will be displayed on the message center.
7. Remove Smart Key from utility compartment pocket and press the or control on the newly programmed Smart Keys to exit programming mode.
8. Verify that the remote entry functions operate (lock, unlock) and that
the vehicle starts with new Smart Key.