Rang up a number of toyota dealers and none really wanted to help me. Eventually someone was nice enough to help me out. The process ton transponder program the key is: 1. Inser the master key and cycle between on and off 5 times, leaving the key on in the 5th cycle. 2. Open and close the driver door 6 times, closing it at the end. 3. Switch the master key off and remove it, immediately inserting the new key. 4. Wait for 60 secs, and then open and close the door once more (The flashing security light should be off) 5. Remove key 6. Success