Airbag control unit with part number 95910-J3400

What does the airbag control unit 95910-J3400 do?

The airbag control unit 95910-J3400 controls the restraint system (SRS) of Hyundai. From the signals of the crash sensors it calculates within milliseconds which airbags and seatbelt pretensioners must trigger in a crash. During operation it checks the entire system and shows faults via the airbag warning light.

The control unit works in the background as soon as the vehicle has power. It checks the incoming measured values for plausibility and compares how the triggers are driven with its own state. This self-check ensures that faults become visible.

After an accident, the unit stores crash data and locks itself. You should keep this state in view during every examination of the unit.

Why does the control unit 95910-J3400 fail?

Most common cause: crash data stored after an accident, even if no airbag has deployed. Other possible causes include aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes, for example from a weak battery or jump-starting.

Crash data cannot be erased with a normal diagnostic tool. That is precisely why the cause persists, even if you have been using the vehicle for some time and have noticed nothing unusual.

Aged components and cold solder joints can only show under load. Moisture and corrosion attack the contacts of the plug connections and disturb the connection there. Voltage spikes stress the electronics when the battery is weak or the vehicle is started with external power.

How can you tell that the 95910-J3400 is defective?

The airbag warning light in the instrument cluster stays on permanently or intermittently, and a fault message appears in the instrument cluster. In addition, the diagnostic tool gets no connection to the control unit, and the fault memory cannot be cleared. In an emergency, airbags and seatbelt pretensioners may then not trigger.

The airbag warning light is the most important warning the system gives you. If it stays on after switching on the ignition, do not treat the vehicle as unremarkable; have the cause checked.

If the connection to the diagnostic tool is missing, that does not necessarily mean a defect in the control unit. The fault memory does record what the system has registered, however, and it cannot be cleared either.

Which vehicles is the 95910-J3400 fitted in?

The airbag control unit 95910-J3400 is fitted in these vehicles: Hyundai Veloster JS (2018-2022).

The overview here shows the vehicles for which this unit is stored in our database.

• Hyundai Veloster JS (2018-2022)

On the one hand, compare the part number on the label of the removed unit with this page. This ensures that you have the right unit in front of you. On the other hand, have the fault memory read out before removal. Only this log shows whether the control unit itself is defective or whether a plug or a 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-J3400 work?

First have the fault memory read out and enclose the log. Then disconnect the battery, and afterwards remove the control unit. Next you create a repair order online and send in the well-packed unit.

The order of these steps is important for safety reasons. Reading out, disconnecting the battery and removal are your steps before you send the unit.

At Airbag24 the team tests the unit on the test bench, replaces defective components and erases stored crash data. A function test follows. Processing usually takes 3–4 working days, and this time covers only checking, repairing and testing at Airbag24. 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-J3400 get to Airbag24?

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

Put the printed repair order into the parcel and pack the unit shock-resistant.