Airbag control unit with part number 98221SJ011

What does the airbag control unit 98221SJ011 do?

The airbag control unit 98221SJ011 controls the SRS of Subaru. It processes the measured values of the crash sensors, selects within milliseconds in a crash the airbags and seatbelt pretensioners that fire, and monitors the system permanently. It reports faults via the airbag warning light.

Monitoring covers sensors, wiring and ignition circuits, and runs without interruption as long as the system is supplied.

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

Why does the control unit 98221SJ011 fail?

Stored crash data is the most common cause of a 98221SJ011 failure, even if no airbag has deployed. Aged electronic components, cold solder joints, moisture and corrosion on plug connections, and voltage spikes from a weak battery or a jump start may also play a part.

Crash data cannot be erased with a normal diagnostic tool. Airbag24 erases it during the repair.

Over the years, components on the circuit board age, and solder joints become brittle.

Plug connections transmit signals less well when moisture or corrosion is present. Voltage spikes additionally stress the electronics.

How can you tell that the 98221SJ011 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently. In addition, an error message may appear, 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 not be triggered.

The light is the first sign that something in the system is wrong. If it does not go out after the ignition is switched on, have the system checked.

A diagnostic tool that cannot make contact with the control unit is another sign of a fault.

Which vehicles is the 98221SJ011 fitted in?

The control unit 98221SJ011 is fitted in these vehicles: Subaru Forester SK (2018-2021) and SK Facelift (from 2021).

The vehicles to which Airbag24 assigns this control unit are listed here.

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

Compare the part number on the label of the removed unit with this page; this only ensures that it is the right unit. Whether the control unit is defective or a plug or cable is the cause is shown only by the fault memory read out beforehand.

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

How does the repair of the 98221SJ011 work?

Have the fault memory read out and the log enclosed, before disconnecting the battery and removing the control unit. Then create a repair order online and send the unit off well packed. At Airbag24, checking, repairing and testing usually take 3–4 working days.

The sequence protects you: removal begins only once the battery is disconnected. At Airbag24, the unit is examined on the test bench, defective components are replaced, the crash data is erased and a function test is carried out. Afterwards, your own unit goes back to you.

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 98221SJ011 get to Airbag24?

The 98221SJ011 comes to Airbag24 directly as a parcel, or you order a UPS pickup for an extra charge. The return after the repair also goes by UPS.

Pack the printed repair order into the parcel and pack the unit shock-proof.