Airbag control unit with part number 98820-9NC0A

What does the airbag control unit 98820-9NC0A do?

In the Infiniti, the airbag control unit 98820-9NC0A is the central control unit of the SRS. It evaluates the signals from the crash sensors, decides within milliseconds in the event of an accident whether to trigger the airbags and seatbelt pretensioners, and monitors the system continuously. It indicates faults via the airbag warning light.

After an accident, the unit stores crash data and locks itself. This state is stored in the unit itself and is part of how the system works.

The crash sensors deliver measured values to the control unit, which assesses them immediately. Every deployment decision rests on this assessment.

Why does the control unit 98820-9NC0A fail?

Stored crash data is the most common cause on the 98820-9NC0A, even when no airbag has deployed. A standard diagnostic tool cannot remove it. Other possible causes are aged electronics, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes.

The control unit can retain data even though no airbag has fired. Reading out the fault memory shows what is stored.

Voltage spikes arise, for example, from a weak battery or from a jump start. The other causes act over a longer period, and Airbag24 erases the crash data during the repair.

How can you tell that the 98820-9NC0A is defective?

A defect in the 98820-9NC0A is indicated by the airbag warning light in the instrument cluster, which lights up permanently or intermittently. In addition, there may be an error message in the instrument cluster, no connection between the diagnostic tool and the control unit, and a fault memory that cannot be cleared.

In such a case, the airbags and seatbelt pretensioners may possibly fail to deploy in an emergency. The warning light is therefore the signal you should act on.

Which vehicles is the 98820-9NC0A fitted in?

The control unit 98820-9NC0A is fitted in these vehicles: Infiniti QX60 L50 Facelift (2015-2021).

The list below shows the vehicles that Airbag24 has assigned to this unit.

• Infiniti QX60 L50 Facelift (2015-2021)

Compare the part number on the label of the removed unit with this page. This only ensures that you have the correct unit. Have the fault memory read out beforehand, because only that 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 285012283, 98820-9NB0A.

How does the repair of the 98820-9NC0A work?

First, have the fault memory read out and enclose the log. Then disconnect the battery, only then remove the 98820-9NC0A, and create a repair order online before sending the unit in.

At Airbag24, the unit is checked, defective components are replaced, stored crash data is erased and a function test is carried out. Processing usually takes 3–4 working days here.

Afterwards your own unit is returned 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 98820-9NC0A get to Airbag24?

You send the 98820-9NC0A to Airbag24 as a parcel, or you book a UPS collection for an extra charge. After the repair, Airbag24 sends it back to you by UPS.

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