Airbag control unit with part number 98221CC140

What does the airbag control unit 98221CC140 do?

The airbag control unit 98221CC140 is the switching centre of the SRS system in Subaru vehicles. It processes the signals from the crash sensors, decides in an accident within milliseconds which airbags and seatbelt pretensioners are triggered, and checks the system for faults continuously.

If it detects a fault, it reports it via the airbag warning light in the instrument cluster. This way you notice the condition directly on the dashboard.

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

Why does the control unit 98221CC140 fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed, and a normal diagnostic tool cannot erase it. In addition there are aged electronic components, cold solder joints, moisture and corrosion on plug connectors, and voltage spikes. With this control unit, erasing the crash data is often not possible; if you want it erased, contact Airbag24 briefly before sending the unit.

Crash data also arises from impacts that do not trigger an airbag. The unit records the event even if all airbags remain untouched.

The other causes mainly concern the electronics. Components age, solder joints can be cold, and moisture or corrosion attack plug connectors. Voltage spikes occur, for example, with a weak battery or when a jump start is connected.

How can you tell that the 98221CC140 is defective?

A defect shows up as an airbag warning light that stays on permanently or intermittently, as a fault message in the instrument cluster, as a diagnostic tool without a connection to the control unit, or as a fault memory that cannot be cleared. In an emergency, airbags and seatbelt pretensioners may then not trigger.

The warning light is the most direct indication the vehicle gives. It lights up briefly after the ignition is switched on and goes out again, provided there is no fault.

If you notice any of these signs, have the vehicle checked promptly before you continue driving.

Which vehicles is the 98221CC140 fitted in?

The assignment comes from the data for this part number. The control unit 98221CC140 is fitted in these vehicles: Subaru BRZ ZD8 (from 2021).

The list below shows whether your vehicle is among them.

• Subaru BRZ ZD8 (from 2021)

Compare the part number on the label of the unit with this page to be sure it is the right unit. Have the fault memory read out beforehand, because only this result shows whether the control unit is defective or whether a plug or a cable is the cause.

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

How does the repair of the 98221CC140 work?

First have the fault memory read out and attach the log; then disconnect the battery, remove the control unit and create a repair order online. Send the well-packed unit in. Airbag24 checks it on the test bench, repairs defective components and carries out a function test.

The order is a safety matter: only after the fault memory has been read and the battery disconnected do you remove the control unit.

Processing at Airbag24 usually takes 3–4 working days. If you want the crash data erased, contact Airbag24 briefly before sending the unit.

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 98221CC140 get to Airbag24?

You send the unit as a parcel or arrange a UPS collection for an extra charge. After the repair the control unit comes back to you by UPS.

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