If it's like other Lexus models, get in the car with your key fob that you want to "assign" to a memory position. I believe you have to already have programmed the memory position. Close the door, start the car, hold the memory button you want to assign to the fob with 1 finger and then with another finger hold the lock button until you hear a beep. After that the programmed memory position will be automatically used when you unlock or start the car with the key fob.Also, the seat memory settings don't seem to have a way to connect to each key? Anyone know how to make that work.