My CPO NX200T came missing one fob and the dealer replaced it and the new one is now programmed. I asked them if the missing one, if found could potentially be used to enter and drive the car away - in this day and age, anything is possible (the PO would know the VIN right). They said yes, the third fob is still active since it was a duplicate. I thought immobilizer codes were unique and were all married to the system. They said to be absolutely sure, I needed two new fobs! This just doesn't sound right. Any help would be appreciated...