Airbag control unit with part number 98820-4GN0A

What does the airbag control unit 98820-4GN0A do?

The airbag control unit 98820-4GN0A coordinates the restraint system (SRS) at Infiniti. It processes the signals from the crash sensors and triggers the matching airbags and seatbelt pretensioners within milliseconds in an accident.

The unit monitors the entire system. It indicates faults via the airbag warning light.

After an accident, it stores crash data and locks itself.

Why does the control unit 98820-4GN0A fail?

The most common cause is crash data from an accident, even without an airbag having been triggered; an ordinary diagnostic tool cannot delete it. Aged components, cold solder joints, moisture and voltage spikes are further possible causes.

Stored crash data stays in the control unit until it is specifically removed.

The other causes are electronic in nature. Weak components, faulty soldering and penetrating moisture alter the signal quality. Voltage spikes arise, for example, during jump-starting or from a weak battery.

How can you tell that the 98820-4GN0A is defective?

A defect on the 98820-4GN0A shows itself in several signs. The airbag warning light in the instrument cluster lights up permanently or intermittently, and the diagnostic tool cannot reach the control unit.

• Fault message in the instrument cluster
• No connection to the diagnostic tool
• Fault memory cannot be cleared

In this state, airbags and seatbelt pretensioners may possibly not trigger in an emergency.

A check without delay is therefore worthwhile.

Which vehicles is the 98820-4GN0A fitted in?

At Infiniti, the 98820-4GN0A was fitted in these models: Infiniti Q60 CV37 (2016-2022).

The models are listed here:

• Infiniti Q60 CV37 (2016-2022)

Comparing the part number on the label of the removed unit with this page confirms that you have the right unit. Reading out the fault memory, by contrast, 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 25348-5CA0B, 98820-1VZ0B.

How does the repair of the 98820-4GN0A work?

You read out the fault memory, enclose the log and disconnect the battery before the control unit is removed. Only then do you remove it and create the repair order online. Processing at Airbag24 usually takes 3–4 working days.

You then send the unit in, well packed.

Airbag24 checks the unit, replaces defective components, deletes the crash data and carries out a function test. Afterwards, the unit goes back 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 98820-4GN0A get to Airbag24?

The unit goes as a parcel to Airbag24, or you book a UPS collection for an extra charge. The return is made by UPS.

Put the printed repair order into the parcel. Pack the unit so that it withstands shocks.