Airbag control unit with part number 98820-4HF0A

What does the airbag control unit 98820-4HF0A do?

The control unit 98820-4HF0A is the airbag control unit of the restraint system (SRS) for Infiniti. It checks the crash sensors and decides in a crash which airbags and seatbelt pretensioners are triggered.

The evaluation takes place within milliseconds and runs throughout operation. The unit indicates detected faults via the airbag warning light.

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

Why does the control unit 98820-4HF0A fail?

Stored crash data is the most common cause of failure on the 98820-4HF0A, even if no airbag was triggered. This point is always at the top of any check.

A standard diagnostic tool cannot erase the crash data. Airbag24 erases it during the repair. Other causes are:

• ageing electronic components
• cold solder joints
• moisture and corrosion at plug connections
• voltage peaks, for example from a weak battery or jump-starting

How can you tell that the 98820-4HF0A is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, and a fault message appears. The fault memory cannot be cleared, and the diagnostic tool cannot establish a connection to the 98820-4HF0A.

The warning light shows the defect directly. In the event of a defect, airbags and seatbelt pretensioners may not trigger in an emergency, so the indication deserves attention.

Which vehicles is the 98820-4HF0A fitted in?

The 98820-4HF0A is fitted in these vehicles: Infiniti Q50 V37 (2013-2024). The assignment makes it easier to classify your removed unit.

The list looks like this:

• Infiniti Q50 V37 (2013-2024)

A cross-check of the part number on the label against this page shows only whether you have the right unit, nothing more. Whether the control unit itself is defective or a plug or cable is the cause is only clarified by the fault memory read out beforehand.

For the same vehicles, we also repair control units with the part numbers 988206HE0A, K8820-4HL0A.

How does the repair of the 98820-4HF0A work?

First read out the fault memory and enclose the log. Then disconnect the battery, remove the control unit 98820-4HF0A and create a repair order online. Afterwards pack the unit well and send it in.

Airbag24 checks the unit on the test bench, replaces defective components, erases the stored crash data and carries out a functional test. Processing usually takes 3–4 working days at Airbag24.

Afterwards your own 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 98820-4HF0A get to Airbag24?

For the way to Airbag24, you can choose between a parcel that you send yourself or a UPS collection for an extra charge. After the repair, the return follows by UPS.

Pack the unit shockproof and enclose the printed repair order: nothing more is needed.