Airbag control unit with part number 98221CC020

What does the airbag control unit 98221CC020 do?

The airbag control unit 98221CC020 controls the restraint system (SRS) in Subaru. It captures the signals from the sensors, decides in an accident within milliseconds on the triggering of airbags and seatbelt pretensioners, and monitors the system continuously. After an accident it stores crash data and locks itself.

A detected fault is stored in memory and shown via the airbag warning light in the instrument cluster.

In everyday use the control unit goes unnoticed; its importance only becomes apparent in an emergency.

Why does the control unit 98221CC020 fail?

Most often the cause is crash data that remains stored after an accident, even if no airbag was triggered. With this control unit, deleting the crash data is often not possible; if you want the crash data erased, contact Airbag24 briefly before sending the unit in. Other causes are ageing of the electronics, moisture at plug connections and voltage spikes.

• Aged electronic components
• Cold solder joints
• Moisture and corrosion at plug connections
• Voltage spikes, for example from a weak battery or jump-starting

Whether any of these causes apply is shown only by reading out the fault memory.

How can you tell that the 98221CC020 is defective?

A defect shows itself mainly through the airbag warning light and an error message. In an emergency, airbags and seatbelt pretensioners may then not trigger.

The airbag warning light lights up permanently or intermittently, an error message appears, the diagnostic tool cannot find the control unit, and the fault memory cannot be cleared.

• Airbag warning light stays on permanently or intermittently
• Error message in the instrument cluster
• Diagnostic tool cannot find the control unit
• Fault memory cannot be cleared

The light checks itself when the ignition is switched on. If it stays on afterwards, a check is advisable.

Plugs and cables can cause the same display, and only reading out the fault memory tells the two possibilities apart.

Which vehicles is the 98221CC020 fitted in?

The control unit 98221CC020 is fitted in these vehicles: Subaru BRZ ZD8 (from 2021). The make Subaru is decisive.

For classification, the details follow:

• Subaru BRZ ZD8 (from 2021)

Comparing the part number on the removed unit with this page makes sure that it is the right unit. Whether the control unit itself is defective or a plug or cable is the cause is shown only by the fault memory, which you have read out before removal.

For the same vehicles, we also repair control units with the part numbers 98221CC001, 98221CC120.

How does the repair of the 98221CC020 work?

Have the fault memory read out first and attach the log. Then disconnect the battery, remove the control unit, create the repair order online and send the unit in well packed.

Airbag24 tests the unit on the test bench, replaces defective components and runs a function test. Afterwards your own unit goes back to you.

Processing at Airbag24 usually takes 3–4 working days; the time applies to testing, repairing and function-checking.

If you want the crash data erased, 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 98221CC020 get to Airbag24?

The unit reaches Airbag24 by package or via a UPS collection booked for an extra charge. The return shipment is made by UPS.

The printed repair order goes into the package, and the unit needs a shockproof casing.