Airbag control unit with part number 98221SG200

What does the airbag control unit 98221SG200 do?

The airbag control unit 98221SG200 belongs to the SRS restraint system of Subaru. It evaluates the signals from the crash sensors and decides in an accident, within milliseconds, which airbags and seatbelt pretensioners trigger. It monitors the system continuously and indicates faults via the airbag warning light.

To do so, it checks sensors, wiring and trigger circuits continuously and stores events in memory.

In an accident, the unit stores crash data and locks itself.

Why does the control unit 98221SG200 fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed. With this control unit, deleting the crash data is often not possible; anyone who wants it deleted should contact Airbag24 briefly before sending the unit in, so that Airbag24 can check the part number. Other causes are aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Crash data arises as soon as the unit registers an event; an airbag does not have to have deployed for this.

The other causes tend to develop slowly. Components age, solder joints can go cold, and moisture attacks contacts. Voltage spikes arise, for example, from a weak battery or a jump start.

How can you tell that the 98221SG200 is defective?

The airbag warning light lights up permanently or flickers occasionally, and an error message appears in the instrument cluster. The diagnostic tool receives no connection to the control unit, and the fault memory cannot be cleared. As long as this is the case, airbags and seatbelt pretensioners may possibly not deploy in an emergency.

The light is the most important warning sign, as it reports a fault as soon as the unit detects it. If it stays on, a check is needed.

Messages that occur only intermittently should also be checked, as they may be stored in the fault memory.

Which vehicles is the 98221SG200 fitted in?

The control unit 98221SG200 is fitted in these vehicles: Subaru Forester SJ (2012-2016) and SJ Facelift (2016-2019). The vehicle documents show whether your car is meant.

The allocation in detail:

• Subaru Forester SJ (2012-2016)
• Subaru Forester SJ Facelift (2016-2019)

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, so that it becomes visible whether the control unit is defective or a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 98221SG001, 98221SG010, 98221SG020, 98221SG030, 98221SG040, 98221SG050.

How does the repair of the 98221SG200 work?

First have the fault memory read out and enclose the log. Then disconnect the battery and only after that remove the control unit. Then create a repair order online and send in the unit well packed. Processing at Airbag24 usually takes 3–4 working days.

At Airbag24 the unit is examined on the test bench, defective components are replaced, and a function test concludes the work. This period covers only checking, repairing and testing.

If you would like the crash data deleted, contact Airbag24 briefly before sending the unit in.

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 98221SG200 get to Airbag24?

Shipment is by parcel, or alternatively you book a UPS collection for an extra charge. The return is likewise by UPS. The printed repair order belongs in the parcel, and you pack the unit shock-proof.

A shock-proof packaging protects the device on its way to us.