Airbag control unit with part number 95420-33000

What is the function of the airbag control unit 95420-33000?

The airbag control unit with part number 95420-33000 is the central control module for the occupant safety system (SRS) in the Hyundai Accent of the LC series. It processes data from crash sensors and determines whether to deploy the front and side airbags as well as the seatbelt pretensioners, providing optimal protection for occupants in the event of a collision.

As an original Hyundai control unit, this module is responsible for continuously monitoring all safety‑related components. It constantly checks the functionality of ignition circuits, sensors, and internal electronics. In case of a malfunction or after deployment, a fault code is stored in memory, and the SRS warning light on the instrument panel illuminates.

The electronics are specifically tailored to the vehicle architecture of the Hyundai Accent LC and the LC facelift, ensuring precise and reliable operation of the entire restraint system.

Why does the control unit 95420-33000 fail?

The most common cause of failure for the control unit 95420-33000 is the storage of crash data following a collision. Other issues include internal electronic malfunctions that lead to communication problems, or defective components on the circuit board. Such faults can usually be resolved through targeted repair.

After a crash, crash data is permanently recorded in the control unit’s internal memory (EEPROM). This lockout prevents the module from being reused without professional refurbishment and results in the airbag warning light remaining illuminated.

Another frequent issue is an internal defect on the circuit board. This may involve faulty driver ICs, voltage regulators, or other electronic components. These hardware failures often prevent communication via the OBD interface or make it impossible to clear specific error codes indicating an internal control unit fault.

Defects affecting individual ignition circuits (e.g., the driver’s airbag) can also stem from a faulty output stage within the control unit, even if the airbag itself has already been replaced.

How do you recognize a fault in the airbag control unit?

A fault in the control unit 95420-33000 primarily manifests as the airbag warning light (SRS lamp) staying illuminated on the dashboard. Additionally, the control unit may become unresponsive when connected to a diagnostic tool, making detailed fault analysis at the workshop impossible.

The most obvious symptom is the active SRS warning light while the engine is running. This indicates an active fault in the airbag system detected by the control unit.

A clear sign of a control unit failure occurs when diagnostic tools cannot establish communication with the SRS module. The workshop is then unable to read or erase fault codes, pointing to a severe disruption of the internal electronics.

Even after a collision—where only the seatbelt pretensioners have deployed—the illumination of the airbag light is a sure indication of stored crash data, necessitating repair of the control unit.

In which vehicles is the 95420-33000 installed?

The airbag control unit with part number 95420-33000 was developed by Hyundai as an original component specifically for the Accent LC series. It is used in pre-facelift models as well as in the revised versions. Repair is possible for both variants.

At Airbag24, the part number 95420-33000 is professionally refurbished for the following models:

Hyundai Accent LC (model years approx. 2000–2003)

Hyundai Accent LC Facelift (model years approx. 2003–2005)

It is crucial to verify the part number on the control unit’s label before removal to ensure accurate identification.

How does the repair process work at Airbag24?

The repair of the control unit 95420-33000 at Airbag24 includes precise diagnostics, targeted deletion of crash data, and restoration of defective electronics. Following a comprehensive final test, the unit is returned ready for installation, preserving its original vehicle coding.

After proper removal, please send the control unit along with the completed repair form to Airbag24. Our technicians first perform an incoming inspection to confirm the exact nature of the fault—whether it is a software blockage caused by crash data or a hardware defect.

Subsequently, repairs are carried out: stored crash data is directly erased from the internal EEPROM chip. For electronic defects, faulty components such as driver ICs or voltage regulators on the circuit board are identified and expertly replaced.

After repair, the control unit undergoes a final test on a test bench that simulates all ignition circuits and communication functions. This ensures the device is fully functional again. We provide a 12-month warranty on every repair.

What shipping options are available?

For repairing your control unit, Airbag24 offers flexible and secure shipping options. You can send the package yourself or arrange a convenient UPS pickup. For returns, free standard and fast express options are available, including cash-on-delivery.

For the outbound shipment, you can either send the defective control unit to us at your own expense or use the paid UPS pickup service, which collects the package from a location of your choice.

Return shipping is provided free of charge by default via UPS Standard (1–3 business days). For an additional fee, faster options such as UPS Express (1–2 business days) are available. Both options can also be combined with cash-on-delivery. Alternatively, in-person collection on-site is possible.