P1693 HYUNDAI Meaning The vehicle immobilizer system consists of the Engine Control Module (ECM), the SMARTRA3, and ignition keys with a built-in transponder. The ECM carries out the check of the ignition key by special encryption algorithm with SMARTRA3 and Transponder.Sometimes if Hyundai Cars gets older then it starts giving trouble in starting. Its Immobiliser light (Key in Car Orange light) doesn't comes on Speedometer ...