Airbag control unit with part number 98221FJ240

What does the airbag control unit 98221FJ240 do?

The airbag control unit 98221FJ240 is the central control unit of the restraint system (SRS) for Subaru. It evaluates the signals from the crash sensors and decides in an accident, within milliseconds, which airbags and seatbelt pretensioners are triggered. After an accident it stores crash data and locks itself.

During operation the control unit monitors the entire system, that is sensors, wiring and firing circuits. If it detects a fault, it shows it via the airbag warning light in the instrument cluster.

Because the restraint system must work in an emergency, a prompt check is worthwhile as soon as a fault occurs.

Why does the control unit 98221FJ240 fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed; with a normal diagnostic tool it cannot be deleted. Other causes include aged electronic components, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes.

The data stays in the memory even if the vehicle appeared to continue driving unscathed after the accident.

The other causes concern the electronics themselves. Components age, solder joints on the circuit board can become cold, and moisture with corrosion disturbs the contacts at plug connectors.

Voltage spikes in the vehicle electrical system also affect the electronics. A weak battery or a jump start can cause such spikes.

How can you tell that the 98221FJ240 is defective?

The airbag warning light in the instrument cluster lights up permanently or only intermittently, an error message appears in the instrument cluster, and the diagnostic tool finds no connection to the control unit. A fault memory that cannot be cleared also indicates a defect. In this state airbags and seatbelt pretensioners may possibly not trigger in an emergency.

The warning light is the most direct indication from the vehicle of a fault in the restraint system, and it deserves prompt attention rather than delay.

Which vehicles is the 98221FJ240 fitted in?

The control unit 98221FJ240 is fitted in these vehicles: Subaru XV GP Facelift (2016-2018) and GP (2011-2016). The assignment applies to the part number 98221FJ240.

The vehicles stored for this part number are listed below:

• Subaru XV GP Facelift (2016-2018)
• Subaru XV GP (2011-2016)

Compare the part number on the label of the removed unit with this page. This only ensures that it is the right unit. Have the fault memory read out beforehand, because only that 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 150300-9400, 98221FJ020, 98221FJ030, 98221FJ050, 98221FJ140, 98221FJ160.

How does the repair of the 98221FJ240 work?

First have the fault memory read out and attach the log, then disconnect the battery and only then remove the control unit. Next, create a repair order online and send the unit in well packed. Processing at Airbag24 typically takes 3–4 working days.

Airbag24 checks the unit on the test bench, repairs defective components, deletes stored crash data and carries out a function test. After that your own unit is returned to you.

The order of these steps on your side serves safety during removal from the vehicle. 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 98221FJ240 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.

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