Engine Control Module (ECM)
WARNING: This page is about a different car, the 2024 Hyundai Kona. However, it is still accessible from the selected car via links, so may be relevant.
- The ECM carries out a check of the ignition key using a special encryption algorithm, which is programmed into the transponder as well as the ECM simultaneously. Only if the results are equal, can the engine be started. The data of all transponders, which are valid for the vehicle, are stored in the ECM. ERN (Encrypted Randorm Number) value between EMS and encrypted smartra unit is checked and the validity of coded key is decided by EMS.