Airbag control unit with part number 95910-A4300

What is the function of the Airbag Control Unit 95910-A4300?

The Airbag Control Unit 95910-A4300 is the central control module for the occupant protection system in the Kia K3 BD, manufactured from 2018 onwards. It continuously monitors sensor data, processes it, and is responsible for precisely deploying airbags and seatbelt pretensioners in the event of a crash to protect occupants.

As the brain of the entire safety system, this control unit must process signals from various crash sensors in the vehicle in real time. Within milliseconds, it determines whether an impact requires activation of the restraint systems and which components—such as front, side, or knee airbags—need to be deployed.

A failure in this critical component inevitably results in the complete malfunction of the airbag system. This is indicated to the driver by the constantly illuminated airbag warning light, signaling that no protection from airbags or seatbelt pretensioners will be provided in the event of a crash.

Why does the 95910-A4300 control unit fail?

The most common cause of failure for the 95910-A4300 control unit is the storage of crash data after an accident, which physically locks the device. Other issues include communication failures, where the control unit becomes unreadable, as well as internal faults in electronic components that lead to problems with specific airbag circuits.

After airbags or seatbelt pretensioners have been deployed, the control unit stores so‑called crash data. This information permanently blocks the unit to prevent reuse without professional diagnostics. The device is then locked and requires repair, during which this data must be professionally erased.

Another frequent issue is a complete loss of communication. In such cases, the control unit can no longer be accessed via the diagnostic interface, even if crash data remains stored in the engine control unit. Common causes include defects in the CAN bus interface or internal voltage converters.

External factors like moisture can also lead to corrosion on the circuit board and connectors, resulting in various malfunctions and specific error codes in the B1XXX or U1XXX series. Additionally, individual components responsible for activating certain airbags may fail, often manifesting as messages such as “Side airbag no connection.”

How do you recognize a fault in the 95910-A4300?

A defect in the Airbag Control Unit 95910-A4300 primarily manifests as a constantly illuminated or flashing airbag warning light on the instrument panel. Often, communication with the control unit via a diagnostic tool is also impossible, preventing the reading of error codes despite the compromised safety system.

The most obvious symptom for the driver is the activated warning light, which fails to extinguish after starting the vehicle, indicating a serious malfunction in the occupant protection system requiring immediate inspection.

For workshops, a clear sign is the inability to perform diagnostics. When a technician attempts to read the control unit, the connection fails—the device does not respond to requests, making precise fault analysis through on-board diagnostics impossible and pointing to an internal defect.

In specific cases, especially following an accident, the control unit may appear blocked even without stored error codes. While airbags (e.g., driver’s airbag, knee airbag) have deployed, the unit itself provides no further information about its condition, necessitating repair.

In which vehicles is the 95910-A4300 control unit installed?

The Airbag Control Unit with part number 95910-A4300 is specifically designed for models manufactured by Kia. At Airbag24, this control unit is supported for repair in the Kia K3 BD vehicle series, produced from 2018 onward.

At Airbag24, repairs for part number 95910-A4300 are available for the following model:

Kia: K3 (BD series, from 2018)

It is crucial that the part number printed on the control unit exactly matches the vehicle’s specifications to ensure compatibility with both the car and its safety system.

How is the 95910-A4300 control unit professionally repaired?

Upon submission to Airbag24, the 95910-A4300 control unit undergoes a comprehensive diagnosis using specialized testing equipment. Repairs focus on replacing defective components and securely erasing stored crash data. Final tests confirm full functionality, backed by 2 years' statutory liability for defects.

At Airbag24, the process begins with a thorough examination of the device. Technicians identify the exact cause of the fault—whether it’s a blocked memory chip after an accident, a faulty CAN bus driver, or a component damaged by corrosion.

Subsequently, the repair is carried out professionally. Only the defective components on the circuit board are replaced, making the repair economically viable. Stored crash data and internal fault codes are reset at the hardware level, ensuring the control unit is fully operational again.

After the repair, the control unit undergoes a comprehensive inspection to confirm flawless communication and proper execution of all functions. Each repaired unit comes with 2 years' statutory liability for defects.