Airbag control unit with part number 98221SJ610

What does the airbag control unit 98221SJ610 do?

The airbag control unit 98221SJ610 coordinates the restraint system (SRS) for Subaru. It evaluates the crash sensors and, in the event of an accident, decides within milliseconds which airbags and seatbelt pretensioners are triggered.

The device also monitors the condition of the system continuously. If it detects a fault, it reports this via the airbag warning light in the instrument cluster.

After an accident the control unit records crash data and locks itself. Only a repair ends the lock.

Why does the control unit 98221SJ610 fail?

Stored crash data is the most common cause on the 98221SJ610, even if no airbag has deployed. Other causes are aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Crash data remains stored in the device after the accident. A normal diagnostic tool cannot remove it.

Aged components and cold solder joints are typical causes within the electronics themselves. Moisture and corrosion at plug connections disrupt the contact, while voltage spikes, for example from a weak battery or a jump start, stress the circuit.

How can you tell that the 98221SJ610 is defective?

A defect on the 98221SJ610 shows up as an airbag warning light that stays on permanently or intermittently, as a fault message in the instrument cluster, as a missing connection to the diagnostic tool, and as a fault memory that cannot be cleared. Airbags and seatbelt pretensioners may then fail to deploy in an emergency.

The warning light is the clearest of these signs, because the device controls it itself. It indicates a fault detected in the restraint system.

A missing connection to the diagnostic tool can also be caused by cables or plugs. Only the fault memory shows which cause applies.

Which vehicles is the 98221SJ610 fitted in?

The 98221SJ610 is fitted in these vehicles: Subaru Forester SK (2018-2021) and SK Facelift (from 2021).

Below you will find the list of vehicles recorded for this part number.

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

Check the part number on the label of the removed device against this page. That only confirms that you have the right device, nothing more. Also have the fault memory read out before you remove anything, because only this result shows whether the control unit itself is defective or whether plugs or cables are causing the fault.

For the same vehicles, we also repair control units with the part numbers 1523004370, 98221FC210, 98221SJ000, 98221SJ001.

How does the repair of the 98221SJ610 work?

Have the fault memory read out and attach the log. Then disconnect the battery, remove the 98221SJ610, create a repair order online and send the device in well packed. At Airbag24 it is examined on the test bench, defective components are repaired or replaced, and a function test follows before it is returned.

The order of the first steps is binding for safety reasons: the control unit is only removed once the battery has been disconnected.

Processing at Airbag24 usually takes 3–4 working days, and only checking, repairing and testing fall within that time.

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 98221SJ610 get to Airbag24?

You send the 98221SJ610 as a parcel or book a UPS collection for an extra charge. The return after the repair is made by UPS.

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