The car buttons are programmed and the memory resides in the actual button and the MUL board. I is appernt that the 2nd floor button programmed the same as the 1st. New buttons are blank. You could try installing a new button for the 2nd floor. You then push and hold the button for the the MUL to program the button. If this does not work you will need a special key switch to reprogram the car buttons. Kone use a laptop to do this.
