Airbag control unit with part number 95910-K4100

What is the function of the airbag control unit 95910-K4100?

The airbag control unit with part number 95910-K4100 is the central control module for the occupant restraint system (SRS) in the Hyundai Kona OS. It continuously monitors data from acceleration and pressure sensors, controls the deployment of airbags and seatbelt pretensioners in the event of a collision, and stores all relevant event data.

As the brain of the passive safety system, it makes split-second decisions on which restraint systems need to be activated to provide optimal protection for occupants. This unit is specifically designed for the first-generation Hyundai Kona vehicle architecture and serves as the interface between the sensor array and actuators such as airbag gas generators.

Why does the 95910-K4100 control unit fail?

The most common causes of failure for the 95910-K4100 are internal hardware defects that can occur even without an accident, as well as stored crash data after a collision that irreversibly locks the unit. Additional reasons include moisture damage or failures in electronic components such as microcontrollers and capacitors.

A typical issue is stored crash data. After airbags or seatbelt pretensioners have deployed, the control unit self‑locks for safety reasons. This condition is known as “crash lock” and can only be resolved through a professional hardware‑level reset; simply clearing the fault memory is not sufficient.

Furthermore, internal components like capacitors or the microcontroller itself may fail without any external cause. Failed repair attempts or moisture ingress into the housing can also lead to irreparable damage on the circuit board, disabling the entire safety system.

How do you recognize a defect in the 95910-K4100?

A defective 95910-K4100 airbag control unit primarily manifests as a permanently illuminated airbag warning light (SRS lamp) in the instrument cluster. Often, the control unit can no longer be accessed via the OBD port, preventing external fault diagnosis.

The most obvious symptom is the persistently lit SRS warning light. It does not turn off after starting the vehicle, indicating a serious, safety‑critical system error that results in a significant defect during the main inspection.

Another clear sign is the lack of communication. When a specialized workshop attempts to read the fault memory using a diagnostic tool, no response is received from the airbag control unit—this points to a complete failure of the internal electronics.

In addition, sporadic or start‑dependent error messages may appear on the display, instructing the driver to consult the manual or visit a workshop directly. These messages indicate that the system cannot successfully complete its self‑tests.

In which models is the 95910-K4100 installed?

The airbag control unit with part number 95910-K4100 was developed exclusively for specific Hyundai models. It is used in the first-generation Hyundai Kona (OS) and is not compatible with other model series such as the Tucson or i10, which use different part numbers.

At Airbag24, we repair this control unit for the following vehicles:

Hyundai Kona OS (model years 2017–2020)

Hyundai Kona OS Facelift (model years 2020–2023)

It is crucial to verify the exact part number, as cross‑compatibility does not exist. For example, the Hyundai Tucson (95910-D7230) and the Hyundai i10 (95910-0X100) utilize technically distinct control units.

How does the repair of the 95910-K4100 work at Airbag24?

The repair process at Airbag24 begins with the secure shipping of the removed control unit. Our technicians perform a detailed diagnosis, fix the defect at the component level, reset crash data if necessary, and conduct a comprehensive functional test before returning the unit with 2 years’ statutory liability for defects.

Upon receipt of the package, the 95910-K4100 control unit undergoes an in-depth analysis to pinpoint the exact cause of the failure. Whether it’s a pure crash‑data entry or a hardware defect is precisely determined at this stage.

Subsequently, professional restoration takes place. Defective components such as capacitors or microcontrollers are replaced, and soldered connections are expertly reworked. If the issue involves crash data, the unit is restored to factory settings and unlocked. Following successful repair, the device undergoes a thorough functional test to ensure proper communication and operation.