Airbag control unit with part number 98221SJ410

What does the airbag control unit 98221SJ410 do?

The airbag control unit 98221SJ410 is the central component of the restraint system (SRS) for Subaru. In an accident it calculates from the crash sensors which airbags and seatbelt pretensioners are triggered within milliseconds.

It monitors the system without interruption. It displays faults via the airbag warning light; after an accident it stores crash data and locks itself.

Why does the control unit 98221SJ410 fail?

Stored crash data from an accident is the most common cause, even if no airbag has deployed. A normal diagnostic tool cannot erase this data. Aged components, cold solder joints, moisture or corrosion at plugs, and voltage spikes are also possible.

Which cause is present is shown by the fault memory.

• Stored crash data from an accident
• Aged electronic components
• Cold solder joints on the circuit board
• Moisture and corrosion at plug connectors
• Voltage spikes, for example from a weak battery or a jump start

How can you tell that the 98221SJ410 is defective?

If the airbag warning light lights up permanently or intermittently, this indicates a defect. A fault message may also appear, and in an emergency the airbags and seatbelt pretensioners may not deploy.

The light sits in the instrument cluster and shows the state of the system. In addition there is no connection between the diagnostic tool and the control unit, and a fault memory that cannot be cleared. In such cases, have the system checked.

Which vehicles is the 98221SJ410 fitted in?

The airbag control unit 98221SJ410 is fitted in these vehicles: Subaru Forester SK (2018-2021) and SK Facelift (from 2021).

This list shows the vehicles for which the unit is recorded:

• Subaru Forester SK (2018-2021)
• Subaru Forester SK Facelift (from 2021)

Check the part number on the label of the unit against this page. This only ensures that you are removing the right unit. Have the fault memory read out beforehand, because only this 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 1523004370, 98221FC210, 98221SJ000, 98221SJ001.

How does the repair of the 98221SJ410 work?

The fault memory is read out first, the log is enclosed, then the battery is disconnected and only then is the control unit removed. You then create a repair order online and send the unit in. Processing at Airbag24 usually takes 3–4 working days.

The order is fixed for safety reasons and must not be changed.

Airbag24 checks the unit on the test bench, replaces defective components, erases the stored crash data and carries out a function test. Your own unit is then returned.

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 98221SJ410 get to Airbag24?

Either you send the unit in as a package, or you book a UPS collection for an extra charge. Airbag24 returns the repaired unit by UPS.

Pack the control unit shock-proof and enclose the printed repair order.