Airbag control unit with part number 98820-4RD0A

What does the airbag control unit 98820-4RD0A do?

The airbag control unit 98820-4RD0A coordinates the SRS restraint system of Nissan. It checks the crash sensors and the connected components continuously and, in a crash, triggers the appropriate airbags and seatbelt pretensioners.

The decision is made in a fraction of a second. The control unit stores any faults it detects and reports them via the airbag warning light in the instrument cluster.

After an accident the unit records crash data and locks itself. Beyond this fact nothing more is needed at this point.

Why does the control unit 98820-4RD0A fail?

The most common cause is crash data stored after an accident, even if no airbag has been triggered. Ageing components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes come on top of this.

A normal diagnostic tool cannot erase the crash data. The fault therefore remains, even when nothing from outside is visible on the electronics.

Voltage spikes arise, for example, from a weak battery or when a jump start is connected. Which of the causes named applies to a particular unit cannot be said without an examination.

How can you tell that the 98820-4RD0A is defective?

The airbag warning light in the instrument cluster comes on permanently or intermittently, and a fault message appears in the instrument cluster. In addition, the diagnostic tool finds no connection to the control unit, and the fault memory cannot be cleared. In a crash, airbags and seatbelt pretensioners may then fail to trigger.

The light reports the fault itself as soon as the system detects one. Therefore pay attention to every time it lights up.

If the connection to the diagnostic tool stays absent, this indicates a fault in the control unit or in its connection. Have the finding confirmed by a specialist workshop.

Which vehicles is the 98820-4RD0A fitted in?

The 98820-4RD0A is fitted in these vehicles: Nissan Maxima A36 (2015-2023).

Here you will find the vehicles stored for this part number:

• Nissan Maxima A36 (2015-2023)

Comparing the number on the label of the removed unit with this page only ensures that it is the correct unit. Have the fault memory read out beforehand: only this result shows whether the control unit is defective or whether a plug or a cable is the cause.

For the same vehicles, we also repair control units with the part numbers 98820-3Y600, 98820-AV200, 98820-AV21A.

How does the repair of the 98820-4RD0A work?

First have the fault memory read out, then disconnect the battery and remove the control unit. Then you create a repair order online and send the well-packed unit in. Processing at Airbag24 usually takes 3–4 working days.

The record of the fault memory goes with the unit. Airbag24 checks the control unit on the test bench, repairs defective components, erases the crash data and carries out a functional test. Afterwards your control unit is returned to you.

The 3–4 working days refer only to this checking, repairing and testing at Airbag24.

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 98820-4RD0A get to Airbag24?

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

Put the printed repair order into the parcel and pack the unit so that it is shock-resistant.