Airbag control unit with part number 98820-9NR3C

What does the airbag control unit 98820-9NR3C do?

The airbag control unit 98820-9NR3C is the central control unit of the restraint system (SRS) for Infiniti. It evaluates the crash sensors and decides in an accident, within milliseconds, which airbags and seatbelt pretensioners are triggered. It shows faults via the airbag warning light.

During operation the unit continuously checks the connected components. Deviations are recorded in the fault memory, which a diagnostic tool can read out.

After an accident it stores crash data and locks itself.

Why does the control unit 98820-9NR3C fail?

Stored crash data from an accident is the most common cause, even if no airbag was triggered. Ageing components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes can also affect the unit.

Crash data remains stored in the unit. A standard diagnostic tool cannot delete it, so a simple reset does not help.

The other causes are related to the electronics or the contacts. Moisture and corrosion attack the plug connections, and voltage spikes arise, for example, from a weak battery or a jump start.

How can you tell that the 98820-9NR3C is defective?

The airbag warning light lights up permanently or intermittently, and a fault message appears in the instrument cluster. The diagnostic tool cannot connect to the control unit, and the fault memory cannot be cleared. In that case, airbags and seatbelt pretensioners may fail to deploy in an emergency.

The warning light shows the defect and is therefore the clearest sign. Take it seriously.

Only reading out the fault memory reveals whether the control unit itself is affected. A plug or a cable can produce similar signs.

Which vehicles is the 98820-9NR3C fitted in?

Compare your vehicle with the list. The airbag control unit 98820-9NR3C is fitted in these vehicles: Infiniti QX60 L50 Facelift (2015-2021).

The vehicles for this part number can be found here:

• Infiniti QX60 L50 Facelift (2015-2021)

Compare the part number on the label of the removed unit with this page. That only ensures that it is the correct unit. Have the fault memory read out before removal as well, because only that shows whether the control unit is defective or a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 285012283, 98820-9NB0A.

How does the repair of the 98820-9NR3C work?

For the control unit 98820-9NR3C, first have the fault memory read out and enclose the log. Then disconnect the battery and remove the control unit. Next, create a repair order online and send in the well-packed unit.

Airbag24 checks the unit on the test bench and repairs defective components. Stored crash data is deleted, a function test follows, and your own unit is returned to you.

Processing at Airbag24 usually takes 3–4 working days.

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 98820-9NR3C get to Airbag24?

You send the unit in as a parcel or book a UPS collection for an extra charge. After the repair Airbag24 returns the control unit 98820-9NR3C to you by UPS.

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