Airbag control unit with part number 98221FJ300

What does the airbag control unit 98221FJ300 do?

The airbag control unit 98221FJ300 is the restraint system (SRS) control unit for Subaru. It processes the signals from the crash sensors and, in an accident, decides within split seconds which airbags and seatbelt pretensioners are triggered. After an accident, it stores crash data and locks itself; the lock ends only with the repair.

The control unit monitors the system constantly. If it detects a fault, it shows this via the airbag warning light in the instrument cluster, so the driver notices the malfunction.

The electronics work with fixed sequences and keep only the information needed for evaluation after an event.

Why does the control unit 98221FJ300 fail?

Stored crash data after an accident is most often the cause, even without a triggered airbag; a normal diagnostic tool cannot remove it. Further triggers are aged electronics, cold solder joints, moisture and corrosion at plug connections, and voltage peaks.

Crash data is the reason why the problem cannot be fixed merely by reading out the fault memory. Airbag24 erases it during the repair.

Further causes at a glance:

• aged electronic components
• cold solder joints
• moisture and corrosion at plug connections
• voltage peaks, for example from a weak battery or a jump start

How can you tell that the 98221FJ300 is defective?

The airbag warning light in the instrument cluster stays on permanently or intermittently, and an error message appears. If the fault memory remains occupied or the diagnostic tool cannot find the control unit, a defect is likely. In that case, airbags and seatbelt pretensioners may possibly fail to trigger in an emergency.

The airbag warning light is the sign you will notice fastest. It lights up as soon as the system has detected a fault and either stays on or keeps coming back.

Additionally, an error message in the instrument cluster, a fault memory that cannot be cleared and a diagnostic tool without connection to the control unit are signs. Each of these indicates that the electronics are no longer working properly.

Which vehicles is the 98221FJ300 fitted in?

The control unit 98221FJ300 is fitted in these vehicles: Subaru XV GP (2011-2016) and GP Facelift (2016-2018); Subaru Impreza GJ (2011-2018) and GP (2011-2018).

This overview helps you compare with your own vehicle.

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

Compare the part number on the label of the removed unit with this page, so you know it is the right unit. Have the fault memory read out in addition, because only the result shows whether the control unit is defective or a cable or plug is the cause.

For the same vehicles, we also repair control units with the part numbers 150300-9400, 152300-6130, 1523003971, 98221FE020, 98221FE100, 98221FJ030.

How does the repair of the 98221FJ300 work?

First have the fault memory read out and attach the log. Then disconnect the battery and remove the control unit 98221FJ300. Then create a repair order online and send the unit in, well packed.

Airbag24 tests the unit on the test bench, repairs defective components, erases the stored crash data and carries out a function test. Processing at Airbag24 usually takes 3–4 working days. Your own unit goes back afterwards.

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 98221FJ300 get to Airbag24?

You send the control unit 98221FJ300 in as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 returns it to you by UPS.

Put the printed repair order into the parcel and pack the unit shockproof.