1. Insert One of the Working Key Fobs
Insert one of the working key fobs into the ignition and turn it to the "ON" position, but do not start the engine.
2. Press the "Lock" Button
Press and hold the "Lock" button on the working key fob for 5 seconds, then release it.
3. Remove the Key Fob
Remove the working key fob from the ignition.
4. Insert the New Key Fob
Insert the new key fob into the ignition and turn it to the "ON" position, but do not start the engine.
5. Press the "Lock" Button Again
Press and hold the "Lock" button on the new key fob for 5 seconds, then release it.
6. Remove the Key Fob
Remove the new key fob from the ignition.
7. Test the New Key Fob
Try to unlock and lock the doors of your XK8 using the new key fob. If it works, the key fob has been successfully programmed.
Here's another method for programming the key fob:
Locate the "valet" or "key" button under the steering wheel.
Open and close the driver's door three times, but do not use the key to lock the door.
Insert the key into the ignition and turn it to the "On" position.
Within five seconds, press the "valet" or "key" button three times.
Remove the key from the ignition.
Press and hold the "lock" button on the new key fob for over five seconds.
If the car locks and unlocks, the new key fob is now programmed.
If the new key fob does not work, repeat the programming steps or consult your vehicle's owner's manual for further instructions.