Airbag control unit with part number 95910-25500

What is the function of the airbag control unit 95910-25500?

The airbag control unit 95910-25500 is the central control module for the occupant protection system in the Hyundai Accent. It is based on Siemens electronics with chip 5WK42931, processes data from crash sensors, and deploys airbags and seatbelt pretensioners in the event of a collision.

As the brain of the passive safety system, this control unit continuously monitors all connected components, including front and side airbags, seatbelt pretensioners, and acceleration and pressure sensors distributed throughout the vehicle. It ensures that the system responds correctly and within milliseconds when needed.

The technical foundation is a Siemens circuit board specifically designed to meet the requirements of the relevant Hyundai models. The installed chip, identified as 5WK42931, handles data processing and stores critical system information, including fault and crash data.

Why does the control unit 95910-25500 fail?

The most common cause of failure for the control unit 95910-25500 is the storage of crash data, which locks the device. Other issues include internal communication faults or, in rare cases, an irreparable defect in the processor unit.

After a crash or a severe impact detected by the sensors as accident‑related, the control unit records a so‑called crash entry. This safety feature prevents further use without professional diagnostics. Such data cannot be erased using standard workshop scanners, resulting in the airbag warning light remaining constantly illuminated.

Another frequent issue is an internal malfunction leading to complete loss of communication. In this case, the control unit becomes inaccessible via the diagnostic interface. Very rarely, the main processor itself may suffer damage; such defects in the processor are usually irreparable and require replacement of the entire control unit.

How can you recognize a fault in the 95910-25500?

A fault in the control unit 95910-25500 primarily manifests as a permanently lit or intermittently flashing airbag warning light on the instrument panel. Additionally, the control unit may become unreachable by diagnostic tools.

The most obvious symptom is the persistently illuminated airbag warning light, which fails to extinguish after starting the vehicle—indicating a serious stored error in the system.

In some cases, the warning light may flash only temporarily or illuminate sporadically. This could signal an emerging fault or a contact problem registered by the control unit.

For workshops, a clear indicator is the lack of communication: when attempting to read the fault memory, no connection can be established with the airbag control unit, even though all other vehicle control units remain accessible.

Especially after a crash, the fault becomes evident when stored crash errors cannot be cleared—even after all activated components, such as airbags or seatbelt pretensioners, have been properly replaced.

In which vehicles is the control unit 95910-25500 installed?

The airbag control unit with part number 95910-25500 is exclusively found in various generations of the Hyundai Accent. It was used both in the MC series and in certain variants of the subsequent RB series.

At Airbag24, we repair the control unit with part number 95910-25500 for the following specific models:

Hyundai Accent MC (model years 2006–2010)

Hyundai Accent MC Facelift (model years 2010–2012)

Hyundai Accent RB (model years 2010–2017)—in select generations of this series

How does the repair of the 95910-25500 proceed at Airbag24?

The repair process at Airbag24 includes professional erasure of crash data, a thorough inspection of hardware components such as the Siemens chip, and a final functional test. Each repair comes with 2 years' statutory liability for defects.

Upon sending the removed control unit to Airbag24, restoration follows a proven, quality‑assured procedure. First, the unit undergoes an initial inspection to verify the reported fault.

The core of the repair is resetting the internal memory. Using specialized diagnostic methods, stored crash data is completely and safely removed, restoring full functionality to the control unit—a safe, manufacturer‑approved procedure.

Next, technicians examine the electronics for any additional potential defects, including inspections of the circuit board and key components, to ensure no secondary damage exists. Following successful restoration and a final test, the unit is prepared for return shipment. Airbag24 provides 2 years' statutory liability for defects on all work performed.