Airbag control unit with part number 98221AN000

What does the airbag control unit 98221AN000 do?

The airbag control unit 98221AN000 controls the restraint system (SRS) on Subaru. It checks the crash sensors continuously and, in an accident, triggers the appropriate airbags and seatbelt pretensioners within fractions of a second.

If a fault occurs, the airbag warning light indicates it. After an accident the unit stores crash data and locks itself; the lock is only lifted by the repair.

Why does the control unit 98221AN000 fail?

Most often the cause is crash data stored after an accident, even if no airbag was triggered. Added to this are ageing components, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes, for example from a weak battery or a jump start.

A normal diagnostic tool cannot erase the crash data.

Which of the other causes is present is only revealed by reading out the fault memory. Without it, the diagnosis remains imprecise.

How can you tell that the 98221AN000 is defective?

A defect becomes visible through the airbag warning light in the instrument cluster, which lights up permanently or intermittently. A fault message accompanies it in the instrument cluster, the diagnostic tool cannot reach the control unit, and the fault memory cannot be erased.

These signs are typical:

• The warning light in the instrument cluster stays on permanently or only intermittently.
• A fault message is shown in the instrument cluster.
• No connection is established between the diagnostic tool and the control unit.
• The fault memory remains, even after an attempt to erase it.

In a defect, airbags and seatbelt pretensioners may fail to trigger in an emergency. Have the warning checked promptly.

Which vehicles is the 98221AN000 fitted in?

Check first using the part number whether your vehicle is affected. The airbag control unit 98221AN000 is fitted in these vehicles: Subaru Forester SK Facelift (from 2021) and SK (2018-2021).

The vehicles stored for this part number are listed here:

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

Compare the number on the label of the removed unit with this page, so you are sure you have 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 98221-SJ370, 98221AN00A, 98221AN00D, 98221AN00E, 98221AN01A, 98221AN01D.

How does the repair of the 98221AN000 work?

First have the fault memory read out and enclose 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.

At Airbag24 the unit is examined on the test bench, defective components are replaced, stored crash data is deleted and a function test follows. Until it is returned, Airbag24 usually needs 3–4 working days for checking, repairing and testing.

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 98221AN000 get to Airbag24?

You handle the dispatch as a parcel, or alternatively book a UPS collection for an extra charge. The return after the repair is likewise made by UPS.

The printed repair order belongs in the parcel, and the control unit should be packed shock-proof.