Airbag control unit with part number 98221SG030

What does the airbag control unit 98221SG030 do?

The airbag control unit 98221SG030 brings together the decisions of the restraint system (SRS) in the Subaru. It checks the signals from the crash sensors and, in an accident, triggers the airbags and seatbelt pretensioners that suit the situation within milliseconds.

The unit also monitors the system for faults constantly. It reports detected faults via the airbag warning light in the instrument cluster and stores them in the fault memory.

If an accident happens, the unit stores crash data and then locks itself.

Why does the control unit 98221SG030 fail?

The most common cause is stored crash data, even if no airbag was deployed. Aged components, moisture and corrosion, and voltage spikes are also possible triggers.

Crash data cannot be erased with a normal diagnostic tool and therefore remains in the control unit. Airbag24 erases the stored crash data during the repair.

The further triggers at a glance:

• aged electronic components
• cold solder joints
• moisture and corrosion at plug connections
• voltage spikes, for example from a weak battery or a jump start

How can you tell that the 98221SG030 is defective?

A defect in the 98221SG030 shows up through the airbag warning light in the instrument cluster, which stays on permanently or intermittently, and through a fault message in the instrument cluster. In addition, the diagnostic tool finds no connection to the control unit, and the fault memory cannot be cleared.

In an emergency, airbags and seatbelt pretensioners may then fail to trigger. The warning light should therefore be taken seriously as a warning.

The light may go out at times and come on again. A pattern like this also justifies having the system checked.

Which vehicles is the 98221SG030 fitted in?

The 98221SG030 is fitted in these vehicles: Subaru Forester SJ (2012-2016) and SJ Facelift (2016-2019).

The models with year of construction are listed below.

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

Comparing the part number on the label of the removed unit with this page gives certainty that it is the right unit. It does not yet identify a cause. Therefore have the fault memory read out, because this log shows whether the control unit is defective or whether a plug or a cable is affected.

For the same vehicles, we also repair control units with the part numbers 98221-SJ370, 98221SG250, 98221SJ001.

How does the repair of the 98221SG030 work?

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

Airbag24 checks the control unit on the test bench, repairs defective components, erases the stored crash data and carries out a function test. Only then is the unit returned to you.

The processing takes 3–4 working days, and this time covers exclusively 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 98221SG030 get to Airbag24?

You can send the control unit 98221SG030 in as a parcel or have it collected by UPS for an extra charge. Airbag24 sends it back to you by UPS after the repair.

Pack the printed repair order into the parcel and wrap the unit shockproof.