Airbag control unit with part number 95910-J3800

What does the airbag control unit 95910-J3800 do?

The airbag control unit 95910-J3800 is the central control unit of the restraint system (SRS) in Hyundai. It checks the signals from the crash sensors, decides within milliseconds in the event of an accident whether to fire the airbags and seatbelt pretensioners, and monitors the system continuously. It indicates faults via the airbag warning light.

Monitoring runs in the background throughout the entire journey. Each irregularity is recorded in the fault memory, which can be read out with a diagnostic tool.

After an accident, the unit stores crash data and locks itself.

Why does the control unit 95910-J3800 fail?

Stored crash data from an accident is most often the cause, even if no airbag has fired, and a standard diagnostic tool cannot erase it. Ageing electronic components, cold solder joints, moisture and corrosion on plug connectors and voltage spikes also play a role, for example from a weak battery or a jump start.

Electronics age, and over time components lose reliability. Cold solder joints are barely visible from the outside.

Moisture and corrosion attack plug contacts and change their transition resistance. Voltage spikes are brief but can damage components.

How can you tell that the 95910-J3800 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, and a fault message appears in the instrument cluster. The diagnostic tool gets no connection to the control unit, and the fault memory cannot be cleared. In that state, airbags and seatbelt pretensioners may possibly fail to fire in an emergency.

The warning light is the most important sign, because it affects the entire restraint system rather than individual components. If it lights up, a prompt check makes sense.

Even if the diagnostic tool cannot connect, the indication of a fault remains. The cause must then be narrowed down with further steps.

Which vehicles is the 95910-J3800 fitted in?

The control unit 95910-J3800 is fitted in these vehicles: Hyundai Veloster JS (2018-2022).

This list shows the assignment of the number to vehicles:

• Hyundai Veloster JS (2018-2022)

First, a comparison is worthwhile: compare the part number on the label of the removed unit with this page. That only confirms it is the correct unit. Also have the fault memory read out. Only the result shows whether the control unit is defective or whether a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 95910-K9000.

How does the repair of the 95910-J3800 work?

Have the fault memory read out first and attach the log to the unit. Then disconnect the battery and only then remove the control unit. Next, create a repair order online and send in the well-packed unit.

Airbag24 tests it on the test bench, replaces defective components, erases stored crash data and tests the function. The unit then goes back to you.

The order protects during removal. Processing at Airbag24 usually takes 3–4 working days, and this time covers only testing, repairing and function testing there. Our repairs come with 2 years' statutory liability for defects. The repaired control unit comes back with all vehicle data and is ready for use as soon as it is refitted — no coding or programming is required.

How does the control unit 95910-J3800 get to Airbag24?

You send the unit as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 returns it by UPS.

Place the printed repair order in the parcel. Pack the unit shock-proof.