Autel IM508 can add smart remote on Toyota Corolla Altis 2021 4A proximity without password (need to remove smart box). Device used: Autel MaxiIM IM508 and G-BOX 2 Toyota Corolla Altis 2021 Smart box Operation mode: On bench 1.Backup EEPROM data Remove Smart Box from the vehicle and connect with G-box to perform the function. The specific operation steps: Select Toyota>> Manual selection>> Other>> Corolla>> 2019- >> Smart Key>> ZRE (2019-) Confirm the vehicle info and continue Press ‘Yes’ to continue Communicating with the smart box It takes a moment to back up EEPROM data, and then fill the name file to save it. 2.Add smart key Re-plug smart box back to the vehicle Select ‘Add Smart Key’ Add more Key Max 4 keys Turn the ignition switch on, then turn off, and turn hazard light on Press ‘Yes’ to continue Confirm have backuped the EEPROM file from this vehicle Choose the backup EEPROM data file Touch the working key ...