Airbag control unit with part number 98820-5SE0A

What does the airbag control unit 98820-5SE0A do?

The airbag control unit 98820-5SE0A evaluates, for Nissan, the signals from the crash sensors and decides in an accident which airbags and seatbelt pretensioners are triggered.

In addition, it monitors the system and reports faults to the airbag warning light.

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

Why does the control unit 98820-5SE0A fail?

The most common cause lies in crash data stored after an accident, even without an airbag having been triggered. A standard diagnostic tool cannot delete this data. Ageing, cold solder joints, moisture and voltage spikes also play a role.

The crash data remains stored until it is specifically deleted.

Electronic components age over time, and solder joints can go cold.

Moisture and corrosion on plug connections disturb the contact. Voltage spikes, for example from a weak battery or jump-starting, cause additional damage.

How can you tell that the 98820-5SE0A is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, and a fault message appears in the instrument cluster. In addition, the diagnostic tool loses its connection to the control unit, and the fault memory cannot be cleared.

In this way, airbags and seatbelt pretensioners may possibly fail to trigger in an emergency.

The warning light therefore indicates the defect.

Which vehicles is the 98820-5SE0A fitted in?

The 98820-5SE0A is used at Nissan in these vehicles: Nissan Leaf ZE1 (from 2017).

The list follows here:

• Nissan Leaf ZE1 (from 2017)

Comparing the part number on the label of the removed unit with this page only confirms that it is the right unit. The fault memory is decisive: it shows whether the control unit itself is defective or whether a plug or cable is the cause. Have it read out beforehand.

For the same vehicles, we also repair control units with the part numbers 98820-4NS0A, 98820-4NS9A, 98820-5SA0E.

How does the repair of the 98820-5SE0A work?

You have the fault memory read out and enclose the log. Then you disconnect the battery and afterwards remove the control unit. Online, you create the repair order and send the unit off, well packed.

Airbag24 checks the unit on the test bench, replaces defective components, deletes stored crash data and tests the function. Processing usually takes 3–4 working days.

The repaired 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 98820-5SE0A get to Airbag24?

Either you send the unit as a parcel, or you book a UPS collection for an extra charge. Airbag24 sends it back by UPS after the repair.

The printed repair order belongs in the parcel. The unit must be packed shock-proof.