So take it apart as if changing battery and look at the rubber assembly with the push buttons. There are thin concave disk that are glued in place under each button. They activate the circuits on the pcb when button pressed down. I have a 2012, that the glue broke free and the disk slide into different spot causing erratic operation of the fob. Including popping trunk and killing battery, even multi cycling as if trying remote start when key fob in range. You need a good 3M rubber cement to glue them back in place. Fixed my fob.