Airbag control unit with part number 98820-5SP0A

What does the airbag control unit 98820-5SP0A do?

The airbag control unit 98820-5SP0A controls the restraint system (SRS) at Nissan. It checks the signals from the crash sensors, decides in an accident which airbags and seatbelt pretensioners are triggered, and keeps an eye on the overall state of the system.

The decision is made within a fraction of a second. During operation, the unit reports detected faults via the airbag warning light in the instrument cluster.

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

Why does the control unit 98820-5SP0A fail?

The most common cause is crash data stored at the 98820-5SP0A after an accident, even if no airbag was triggered. Aged components, moisture at the plugs and voltage spikes can also load the electronics.

Stored crash data is the cause most often found. It cannot be deleted with a normal diagnostic tool.

The other causes are the ageing of electronic components, moisture and corrosion on plug connections, and brief voltage spikes, such as can occur with a weak battery or when connecting to a jump start.

Which of these causes applies to your unit can only be shown by the examination. A guess alone is not enough for that.

How can you tell that the 98820-5SP0A is defective?

A defect on the 98820-5SP0A shows up as the airbag warning light in the instrument cluster lighting up continuously or intermittently. In addition, an error message appears in the instrument cluster, the diagnostic tool cannot find the control unit, and the fault memory cannot be cleared.

In an emergency, airbags and seatbelt pretensioners may not be able to trigger. A warning of this kind should be checked promptly.

Whether the control unit itself or a cable is causing the fault can only be determined by reading out the fault memory.

Which vehicles is the 98820-5SP0A fitted in?

The 98820-5SP0A is fitted in these vehicles: Nissan Leaf ZE1 (from 2017).

The list below shows which vehicles this part number is recorded for.

• Nissan Leaf ZE1 (from 2017)

Compare the part number on the label of the removed unit with this page. This only confirms that you have the right unit. Before removal, have the fault memory read out, because only this log shows whether the control unit is defective or a plug or cable is the cause.

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 98820-5SP0A work?

First you read out the fault memory and enclose the log. Then you disconnect the battery and only afterwards remove the control unit 98820-5SP0A. Next you create a repair order online and send the unit in, well packed.

Airbag24 checks the unit on the test bench, replaces defective components, deletes the crash data and carries out a function test. Afterwards, Airbag24 returns your own unit to you.

Processing at Airbag24 usually takes 3–4 working days. This time applies only to checking, repairing and testing; removal, sending and shipping are not included.

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 98820-5SP0A get to Airbag24?

You send the control unit 98820-5SP0A in as a parcel or book a UPS collection for an extra charge. After repair, Airbag24 sends it back to you by UPS.

Pack the unit shockproof and enclose the printed repair order.