Hyundai Smart Key gets locked once it is programmed or matched to a car. Keydiy KD-X2 remote maker can be used to unlock this key so that it can be used again with any other Hyundai i20 cars. Example: How to unlock/renew Hyundai i20 smart key? i20 ID46 smart key 3-button In keydiy KD-X2, select Chip Function->Automation…