Airbag control unit with part number 98221CC010

What does the airbag control unit 98221CC010 do?

The airbag control unit 98221CC010 controls the restraint system (SRS) in Subaru. If it detects an accident, it calculates within milliseconds which airbags and seatbelt pretensioners trigger. During operation it monitors the system continuously and indicates faults via the airbag warning light.

The software in the unit also checks the lines to the firing circuits and writes faults to the fault memory.

After an accident the unit secures crash data and switches into a locked state.

Why does the control unit 98221CC010 fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed. A normal diagnostic tool cannot erase it; Airbag24 erases it during the repair. Other causes are aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Crash data is the consequence of a registered event. A deployed airbag is not required for this.

Voltage spikes arise, for example, from a weak battery or a jump start and load the electronics. The other causes tend to act gradually over a longer period.

How can you tell that the 98221CC010 is defective?

The airbag warning light in the instrument cluster lights up permanently or only intermittently, and an error message appears. The diagnostic tool gets no connection to the control unit, and the fault memory cannot be cleared. In an emergency, airbags and seatbelt pretensioners may therefore possibly not deploy.

Typical signs:

• airbag warning light permanently or intermittently on
• error message in the instrument cluster
• diagnostic tool without connection
• fault memory cannot be cleared

A check provides clarity once these signs appear. The light indicates the fault clearly.

Which vehicles is the 98221CC010 fitted in?

The control unit 98221CC010 is fitted in this vehicle: Subaru BRZ ZD8 (from 2021). The vehicle papers help with the comparison.

Here is the allocation:

• Subaru BRZ ZD8 (from 2021)

Compare the part number on the label of the removed unit with this page; this only confirms the right unit. Have the fault memory read out beforehand, as 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 98221CC001, 98221CC120.

How does the repair of the 98221CC010 work?

First have the fault memory read out and enclose the log. Then disconnect the battery and only then remove the unit. Online, create a repair order and send in the unit well packed. At Airbag24 it is checked, defective components are replaced, the stored crash data is erased, and a function test follows.

The processing time is usually 3–4 working days and covers only checking, repairing and testing at Airbag24.

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 98221CC010 get to Airbag24?

You can send the unit in as a parcel, or a UPS collection can be booked for an extra charge. The repaired unit also comes back by UPS. Include the printed repair order and pack the unit shock-proof.

A firm casing protects the housing and connector on the way.