how do you reverse it?Not too sure if you know but you can disable the keyless entry using the key fob. Lock the door with the fob and hold it down. Once locked keep the lock button pressed then press and hold the unlock button at the same time until the indicators flash 4 times. Keyless entry is now disabled. Works on most Kia models as well.
and do you mean it disables proximity detection of the key, or the fob cannot be used at all and you literally need to unlock it with the physical key, which involves uncapping the driver handle...