This newbie xf owner is pumped. Picked up new key from dealer, he advised it will be 75.00 to program. I looked at him with my big brown eyes, and said really? I just paid 150 for the key. I then asked, how long will it take for programming? His response, about 1/2 hr. I looked at him, said no thanks, I can do it in less than 30 seconds. What I did not tell him is that I have been reading threads on the forum, and I was going to follow the steps.

Insert the key into the ignition switch.
Press either the lock or unlock button momentarily twice.
Turn the key in the ignition switch to the ON/RUN position within 30 seconds. Started the car honked the horn laughed all the way home. Thanks for making this old lady look like she knew what she was doing. I love you guys for sharing