Airbag control unit with part number 98221SG210

What does the airbag control unit 98221SG210 do?

The airbag control unit 98221SG210 controls the restraint system (SRS) of Subaru. From the crash sensor signals it determines in a fraction of a second in an accident which airbags and seatbelt pretensioners fire, and it keeps the entire system in view. If it detects a fault, this appears via the airbag warning light.

After an accident the unit stores crash data and locks itself. Diagnosis therefore always begins with reading out the fault memory.

Why does the control unit 98221SG210 fail?

The most common cause is stored crash data after an accident, even if no airbag has deployed; a normal diagnostic tool cannot erase them. In addition, aged electronic components, cold solder joints, moisture, corrosion at plug connectors and voltage spikes come into consideration. With this control unit, erasing the crash data is often not possible; if you want the crash data erased, contact Airbag24 briefly before you send the unit in, and Airbag24 will then check the number.

Which of the other causes applies in an individual case is shown only by reading out the fault memory. Voltage spikes arise, for example, from a weak battery or a jump start, and moisture can build up on plugs over years.

How can you tell that the 98221SG210 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, an additional fault message appears in the instrument cluster, the diagnostic tool cannot reach the control unit, and the fault memory cannot be cleared. Then airbags and seatbelt pretensioners may not deploy in an emergency.

The warning light is therefore the most important warning sign, and a permanently lit display cannot simply be ignored.

Which vehicles is the 98221SG210 fitted in?

The control unit 98221SG210 is fitted in these vehicles: Subaru Forester SJ (2012-2016) and SJ Facelift (2016-2019).

The list below names the models for which our data hold this part number:

• 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 confirms that it is the right unit. Before you send it in, have the fault memory read out, because only the 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 98221SG001, 98221SG010, 98221SG020, 98221SG030, 98221SG040, 98221SG050.

How does the repair of the 98221SG210 work?

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

Airbag24 checks the unit on the test bench, repairs defective components and carries out a function test. Checking, repairing and testing usually takes 3–4 working days at Airbag24. The unit then goes back to you. If you want the crash data erased, contact Airbag24 briefly before sending it 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 98221SG210 get to Airbag24?

You send the unit as a parcel or book a UPS collection for an extra charge, and after the repair Airbag24 sends it back by UPS.

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