Airbag control unit with part number 98820-9BU8E

What does the airbag control unit 98820-9BU8E do?

The airbag control unit 98820-9BU8E is the central control unit of the SRS restraint system in the Nissan. It reads the crash sensors, calculates within milliseconds of an impact which airbags and seatbelt pretensioners are to be triggered, and checks the system continuously. It reports faults via the airbag warning light.

Monitoring runs without any action by the driver. The unit logs irregularities in the fault memory, from which the finding can later be read.

In an accident it secures the crash data and locks itself.

Why does the control unit 98820-9BU8E fail?

Stored crash data is the most common cause with the 98820-9BU8E, even if no airbag was triggered. Aged electronic components, cold solder joints, moisture or corrosion at plug connections, and voltage spikes are also possible.

A standard diagnostic tool cannot remove the crash data. Airbag24 clears it during the repair.

Voltage spikes arise, for example, from a weak battery or a jump-start. Which cause applies in each case is shown only by the test.

How can you tell that the 98820-9BU8E is defective?

A defect in the 98820-9BU8E shows up as the airbag warning light in the instrument cluster, which lights up constantly or intermittently. Also present may be an error message, a missing connection to the diagnostic tool, or a fault memory that cannot be cleared.

As long as the defect persists, airbags and seatbelt pretensioners may not trigger in an actual accident. The light is therefore a warning you should take seriously.

Which vehicles is the 98820-9BU8E fitted in?

The 98820-9BU8E is fitted in these vehicles: Nissan Frontier D41 (from 2021).

Below follows the list of vehicles for this part number.

• Nissan Frontier D41 (from 2021)

You can check the part number on the label of the removed unit against this page. If the number matches, you have the correct unit. That does not confirm the cause, though. So have the fault memory read out beforehand, because it shows whether the control unit or a plug or cable is causing the fault.

For the same vehicles, we also repair control units with the part numbers 98820-9BU8A, 98820-9BU8D, 98820-9BU9B.

How does the repair of the 98820-9BU8E work?

First you have the fault memory read out and attach the log. Then you disconnect the battery, and only then remove the 98820-9BU8E. Processing at Airbag24 usually takes 3–4 working days.

Then you create the repair order online and send the unit in, well packed. Airbag24 checks it, replaces defective components, clears the stored crash data and runs a functional test, after which your own unit is returned 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 98820-9BU8E get to Airbag24?

You send the control unit 98820-9BU8E as a parcel to Airbag24, or you 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 in the parcel and pack the control unit shock-proof.