Airbag control unit with part number 98820-9NG1A

What does the airbag control unit 98820-9NG1A do?

In the vehicle from Infiniti, the airbag control unit 98820-9NG1A takes on the role of the central control unit for the SRS restraint system. It processes the readings from the crash sensors and determines within milliseconds which airbags and seatbelt pretensioners are triggered in an accident. A running self-test monitors the system, and faults appear via the airbag warning light.

If an accident occurs, the unit stores crash data and then locks itself. In normal operation, you notice nothing of this.

The control logic works in the background, and a fault is only recorded in the fault memory once it has been detected.

Why does the control unit 98820-9NG1A fail?

With the 98820-9NG1A, stored crash data is the primary cause: it remains in the control unit after an accident, even if no airbag has deployed, and a normal diagnostic tool cannot erase it. Ageing components, cold solder joints, moisture and corrosion, and voltage spikes are also possible.

Stored crash data is the most frequent reason for a failure, because the unit keeps it even when the airbags remained undamaged. A standard diagnostic tool cannot reach these entries.

The other causes relate to the electronics and the environment: components age, solder joints can go cold, moisture attacks plug connectors, and voltage spikes occur, for example with a weak battery or a jump start.

How can you tell that the 98820-9NG1A is defective?

The airbag warning light in the instrument cluster stays on permanently or intermittently, which indicates a defect in the 98820-9NG1A. Fault messages in the instrument cluster, a diagnostic tool without a connection to the control unit, and a fault memory that cannot be erased come on top of this. In this case, the airbags and seatbelt pretensioners may not be able to deploy in an emergency.

The light is the clearest sign of a problem in the restraint system. It should therefore be taken seriously, and the system should be checked promptly.

These signs occur:

• Airbag warning light on permanently or intermittently
• Fault message in the instrument cluster
• Diagnostic tool cannot reach the control unit
• Fault memory cannot be erased

Which vehicles is the 98820-9NG1A fitted in?

The control unit 98820-9NG1A is fitted in these vehicles: Infiniti QX60 L50 Facelift (2015-2021).

For orientation, the list of assigned models follows.

• Infiniti QX60 L50 Facelift (2015-2021)

Compare the part number on the label of the removed unit with this page. This only confirms that you have the right unit. Also have the fault memory read out before removal, because only this 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 285012283, 98820-9NB0A.

How does the repair of the 98820-9NG1A work?

For the 98820-9NG1A, first have the fault memory read out and enclose the log, then disconnect the battery and only afterwards remove the control unit. Next, create the repair order online and send the unit in well packed. At Airbag24, processing usually takes 3–4 working days.

Airbag24 checks the unit on the test bench, replaces defective components, deletes stored crash data and carries out a function test. The unit then goes back to you.

This period relates solely to checking, repairing and testing at Airbag24, not to your steps or the shipping. 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 98820-9NG1A get to Airbag24?

The control unit 98820-9NG1A reaches us as a parcel, or you book a UPS collection for an extra charge. After the repair, Airbag24 returns it by UPS.

The printed repair order goes into the parcel; pack the unit shock-proof.