Airbag control unit with part number 98820-4GP0A

What does the airbag control unit 98820-4GP0A do?

The airbag control unit 98820-4GP0A is the control unit of the restraint system (SRS) for Infiniti. It evaluates the signals from the crash sensors and, in an accident, determines within milliseconds which airbags and seatbelt pretensioners are triggered.

At the same time, it monitors the system continuously. A detected fault is shown via the airbag warning light in the instrument cluster.

After an accident, the unit stores crash data and locks itself.

Why does the control unit 98820-4GP0A fail?

Stored crash data is the most common cause when the control unit 98820-4GP0A fails, even if no airbag has deployed. A normal diagnostic tool cannot remove it. Other causes are ageing components, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes.

The crash data remains stored after the accident. Ageing components and cold solder joints act on the electronics over the long term, much like moisture and corrosion on the plugs.

Voltage spikes, for example with a weak battery or when starting with external power, are also among the possible causes. The inspection will clarify which of these applies.

How can you tell that the 98820-4GP0A is defective?

A defect on the 98820-4GP0A shows up as the airbag warning light in the instrument cluster staying on permanently or intermittently. Added to this are fault messages in the instrument cluster, no connection from the diagnostic tool, and a fault memory that cannot be cleared.

These signs can occur individually or at the same time. Have each of them examined promptly.

In an emergency, airbags and seatbelt pretensioners may fail to deploy. The warning light makes the defect visible, so waiting is not advisable.

Which vehicles is the 98820-4GP0A fitted in?

The control unit 98820-4GP0A is fitted in these vehicles: Infiniti Q50 V37 (2013-2024).

You will find the vehicles this part number belongs to here:

• Infiniti Q50 V37 (2013-2024)

Comparing the part number on the label of the removed unit with this page only confirms the correct unit. You should have the fault memory read out beforehand, because it shows whether the control unit is defective or whether a plug or cable is causing the fault.

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

How does the repair of the 98820-4GP0A work?

First have the fault memory read out and enclose the log. Then disconnect the battery, and only after that remove the control unit 98820-4GP0A. Airbag24 usually processes the unit within 3–4 working days.

Create a repair order online and pack the unit well before sending it in. Airbag24 checks it on the test bench, replaces defective components, erases stored crash data and carries out a function test. Your own unit then comes 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 98820-4GP0A get to Airbag24?

You send the control unit 98820-4GP0A as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 sends it back to you by UPS.

Place the printed repair order in the parcel and pack the unit shock-resistant.