Airbag control unit with part number 98820-1EH0A

What does the airbag control unit 98820-1EH0A do?

The airbag control unit 98820-1EH0A forms the control unit of the SRS restraint system of Nissan. It evaluates the signals from the crash sensors, decides within milliseconds in the event of an accident which airbags and seatbelt pretensioners to trigger, and monitors the system continuously. It indicates faults via the airbag warning light.

Monitoring covers the sensors, wiring and triggering elements. The unit checks them continuously for plausibility.

After an accident, the unit stores crash data and locks itself.

Why does the control unit 98820-1EH0A fail?

Stored crash data from an accident is the most common cause, even if no airbag has deployed. Other causes are aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Crash data remains in the unit after an accident, even if no airbag has deployed. A normal diagnostic tool cannot delete it, and Airbag24 removes it as part of the repair.

The other causes lie in the electronics and their connections. Components age, solder joints can be cold, and moisture attacks plug contacts. Voltage spikes arise, for example, from a weak battery or when jump-starting.

How can you tell that the 98820-1EH0A is defective?

The airbag warning light is on permanently or intermittently, and a fault message appears in the instrument cluster. In addition, there is a diagnostic tool without a connection to the control unit and a fault memory that cannot be cleared.

Typical signs:

• Airbag warning light on permanently
• Airbag warning light on intermittently
• Fault message in the instrument cluster
• No connection to the control unit
• Fault memory cannot be cleared

With these signs, airbags and seatbelt pretensioners may possibly not trigger in an emergency. Have the fault memory read out promptly.

Which vehicles is the 98820-1EH0A fitted in?

The control unit 98820-1EH0A is fitted in these vehicles: Nissan 370Z Z34 Facelift (2013-2020) and Z34 (2008-2013).

The vehicles on record are listed below:

• Nissan 370Z Z34 Facelift (2013-2020)
• Nissan 370Z Z34 (2008-2013)

Two steps are worthwhile before sending the unit in. Comparing the part number on the label of the removed unit with this page ensures that it is the right unit. Having the fault memory read out, on the other hand, shows whether the control unit itself is defective or whether a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 25348 1A33B, 98820 1EJ1A, 98820-1EA0A, 98820-1ER0A, K8820-1EA0A, K8820-1EJ0A.

How does the repair of the 98820-1EH0A work?

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

At Airbag24, the unit is tested on the test bench, and defective components are replaced. Airbag24 deletes the stored crash data before the function test follows.

For testing, repairing and checking, Airbag24 generally needs 3–4 working days. Your own unit is then 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 98820-1EH0A get to Airbag24?

You send the unit as a parcel or book a UPS collection for an extra charge. Airbag24 returns it by UPS after the repair.

Put the printed repair order into the parcel and pack the unit shockproof.