What the SRSCM does on your Hyundai
Hyundai calls its airbag control unit the SRSCM, short for Supplemental Restraint System Control Module. Some Hyundai literature also refers to it as the ACU, the airbag control unit. It is the brain of the restraint system on every modern Hyundai. The SRSCM reads the impact sensors, decides when to fire the airbags and the belt pretensioners, and writes a permanent record of any deployment into its memory.
Once that crash data is written, the module locks and the airbag light stays on. A handheld scanner can clear the everyday open and short codes after the car is repaired, but it cannot erase the crash record, because that data lives in the module's own memory at the chip level. We take your original SRSCM in our shop, clear the stored crash data and hard codes, and send it back reading factory-ready. It keeps its original VIN coding, so it plugs straight back in and works the moment you reinstall it.
