VIDEOClick to see full answer. Thereof, how do smart key locks work?When the user wants to rekey the lock, the working key is used to rotate the plug 90° clockwise. A special tool known as the “Smart Key” is used on the small hole to the left of the keyway. This physically disengages the sidebar and wafers from the guide pins and allows the working key to be removed.Also, why is my Kwikset lock not working? Remove the battery pack. Press and hold the A or Program button while reinserting the battery pack. Keep holding the button for 30 seconds until the Lock beeps and the status LED flashes red. View button locations for your Lock model. Just so, why is my smart key not working? If your car key remote works after replacing the battery, then you’re done. If it doesn’t, then there could be another problem with the remote, like broken battery contacts or a problem with the buttons. It’s also possible that your vehicle may have forgotten your fob, in which case you will need to reprogram it.How do I change my smart key lock?First, insert the functioning key and turn it ¼-turn clockwise. Then, insert and remove the SmartKey learn tool. Follow by removing the functioning key, inserting a new key, and turning it ½-turn counter-clockwise. Your lock is then successfully re-keyed.