Yeah very very easy to knock something off the pcb. my fob key which just unlocks the boot no longer works anymore. Not sure if it was due to cutting or my soldering... I can barely see anymore.You have some missing components from the pcb what i marked on this picture. these are very easy to break off while you cuting the key open. there is your solution. best to send it for a repair service. you can also check the battery with a multimiter if it has 2.6v or more so you will know if there is voltage to the key. but without those capacitors or resistors it will not work. Don't ask me how i know.