Airbag control unit with part number 98820-5SH0A

What does the airbag control unit 98820-5SH0A do?

The airbag control unit 98820-5SH0A controls the SRS restraint system of Nissan. It receives the signals from the crash sensors, selects in an accident within milliseconds the airbags and seatbelt pretensioners to be triggered, and reports faults via the airbag warning light.

While driving it monitors the entire system. After an accident it records crash data and locks itself, and only the repair lifts this lock again.

Why does the control unit 98820-5SH0A fail?

Stored crash data is a central cause, even if no airbag has deployed; it cannot be removed with a normal diagnostic tool. Other causes are ageing electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

The crash data stays in the unit until Airbag24 removes it during the repair. Resetting it with the diagnostic tool therefore does not help.

Ageing components and cold solder joints belong to the electronics themselves. Moisture and corrosion weaken the plug connections, and voltage spikes from the vehicle's electrical system act on the unit as well.

How can you tell that the 98820-5SH0A is defective?

A defect in the 98820-5SH0A shows through the airbag warning light, which stays on permanently or intermittently, and through fault messages. If there is no connection to the diagnostic tool, or the fault memory cannot be cleared, this points to a malfunction. In an emergency, airbags and seatbelt pretensioners may possibly not fire.

The airbag warning light in the instrument cluster is the first warning signal. It shows that the system has reported an irregularity that requires a check.

Which vehicles is the 98820-5SH0A fitted in?

The airbag control unit 98820-5SH0A is fitted in these vehicles: Nissan Leaf ZE1 (from 2017).

You will find the models of Nissan in the following overview in which this control unit was used.

• Nissan Leaf ZE1 (from 2017)

Compare the part number on the label of the removed unit with this page. Then you know that it is the right unit. Also have the fault memory read out beforehand, because the log shows whether the control unit itself 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 98820-5SH0A work?

First have the fault memory read out and enclose the log. Then disconnect the battery and only then remove the control unit 98820-5SH0A. Afterwards create the repair order online and send the unit in well packed. Processing at Airbag24 takes 3–4 working days as a rule.

At Airbag24 the unit is checked, defective components are replaced and the crash data is erased. A function test follows before your own unit goes back to you.

The sequence must be followed for safety reasons. 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 98820-5SH0A get to Airbag24?

You send the 98820-5SH0A as a parcel to Airbag24 or book a UPS collection for an extra charge. After the repair it comes back to you by UPS.

Print the repair order and put it in the parcel. Pack the control unit shock-proof so that it survives transport.