[slicktux]

You can disable the RFID by manipulating the right bits in the ECU’s anti-theft EEPROM. Something that’s done with imported engines from Japan for sports car engine swap; they usually come with wire harnesses and ECU but no key. I know how its done for the imported 3SGTE engine ECU… I’m sure it’s not too different for the 2013 4Runner. Though, Toyota makes some newer ECUs nearly impossible to open without damaging the circuit board and anti-theft bypass requires physical access to the EEPROM.

Edit: RFID should not need battery…you can reprogram your own key by jumpering the correct OBD2 pins..process takes about 20 minutes…