Airbag control unit with part number 98820-4BC0A

What does the airbag control unit 98820-4BC0A do?

The 98820-4BC0A controls the restraint system (SRS) for Nissan. It processes the signals from the crash sensors, decides within milliseconds in a crash on the triggering of airbags and seatbelt pretensioners, and monitors the system continuously. After an accident it stores crash data and locks itself.

Faults are shown via the airbag warning light in the instrument cluster. Monitoring runs in the background, even while the vehicle drives normally.

Stored crash data are usually not noticed in everyday driving, but they are kept in the unit.

Why does the control unit 98820-4BC0A fail?

Stored crash data after an accident are the most common cause, even if no airbag has triggered, and a normal diagnostic tool cannot remove them. Aged electronic components, cold solder joints, moisture at connectors and voltage spikes are also possible.

Aged components are part of any electronics that work in a vehicle for a long time. Cold solder joints are likewise among the known sources of fault.

Moisture and corrosion at connectors disturb the contact. Voltage spikes arise, for example, from a weak battery or when starting with a jump start. Which cause applies in the individual case is shown by the readout of the fault memory.

How can you tell that the 98820-4BC0A is defective?

A defect shows when the airbag warning light in the instrument cluster stays on permanently or intermittently, an error message appears in the instrument cluster, the diagnostic tool cannot connect to the control unit, or the fault memory cannot be cleared. Then the airbags and seatbelt pretensioners may possibly not trigger in an emergency.

The clearest signal comes from the warning light. It indicates a fault while the journey continues normally.

A missing connection to the diagnostic tool is no clear proof of the control unit. Wiring and connectors are also possible, and the fault memory shows where the cause lies.

Which vehicles is the 98820-4BC0A fitted in?

The 98820-4BC0A is fitted in these vehicles: Nissan Rogue T32 (2013-2020).

The following overview lists the vehicles recorded for this part number.

• Nissan Rogue T32 (2013-2020)

Compare the part number on the label of the removed unit with this page. This comparison only confirms that you have the right unit. Beforehand, have the fault memory read out, because only its report shows whether the control unit is defective or whether a connector or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 98820-1VK0A, 98820-1VL0A, 98820-4BS0A, 98820-6RR0C, 98820-6RR0D, 98820-6RR0E.

How does the repair of the 98820-4BC0A work?

You read out the fault memory first and enclose the report, then disconnect the battery and remove the control unit. Then you create a repair order online and send the unit in well packed. Airbag24 checks the unit on the test bench, repairs defective components, erases stored crash data and carries out a functional test.

The order serves safety: the control unit is removed only after reading out and disconnecting.

The unit of your own is returned to you afterwards. Processing at Airbag24 usually takes 3–4 working days. 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 98820-4BC0A get to Airbag24?

You send the control unit as a parcel or book a UPS collection for an extra charge; after the repair, Airbag24 returns the 98820-4BC0A to you by UPS.

The printed repair order belongs in the parcel, and the unit must be packed shockproof.