Airbag control unit with part number 98820-3WS0A

What does the airbag control unit 98820-3WS0A do?

The airbag control unit 98820-3WS0A is the central unit of the SRS restraint system of Nissan. It processes the measured values from the crash sensors, triggers the appropriate airbags and seatbelt pretensioners within milliseconds in an accident, and checks the system for faults continuously.

After an accident it stores crash data and then remains locked. It reports any faults it finds via the airbag warning light.

Why does the control unit 98820-3WS0A fail?

The most common cause is stored crash data after an accident, even without an airbag deployment. Normal diagnostic tools cannot remove it; Airbag24 erases it during the repair. Further triggers are ageing of the electronics, moisture, corrosion on plugs, cold solder joints and voltage spikes.

• ageing of the electronic components
• moisture and corrosion at plug connections
• cold solder joints on the circuit board
• voltage spikes, for example from a weak battery or from starting with an external power source

Which cause applies in an individual case cannot be determined without testing.

How can you tell that the 98820-3WS0A is defective?

A defect in the 98820-3WS0A shows up as the airbag warning light in the instrument cluster lighting up permanently or intermittently, as a fault message in the instrument cluster, as a lack of connection to the diagnostic tool and as a fault memory that cannot be erased. If you see these signs, have the unit checked.

The airbag warning light begins the list of signs. If it stays on, the system has detected a fault, and the message in the instrument cluster confirms this. In an emergency, airbags and seatbelt pretensioners may then be unable to trigger.

Which vehicles is the 98820-3WS0A fitted in?

Before removal, check the model. The 98820-3WS0A is fitted in these vehicles: Nissan Quest E52 (2011-2017).

These vehicles are stored for the part number:

• Nissan Quest E52 (2011-2017)

Comparing the part number on the label with this page only confirms that you have the right unit. Whether the control unit is defective or whether a plug or cable is the cause is shown only by the fault memory, which you have read out in advance.

For the same vehicles, we also repair control units with the part numbers 98820-1JA0A.

How does the repair of the 98820-3WS0A work?

First have the fault memory read out and enclose the log. Then disconnect the battery, and only then remove the 98820-3WS0A. Next create a repair order online and send in the well-packed unit. Processing at Airbag24 usually takes 3–4 working days.

At Airbag24 the unit is checked on the test bench, defective components are replaced, the crash data is erased and a functional test is carried out. Your 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 98820-3WS0A get to Airbag24?

You can send the 98820-3WS0A as a parcel, or book a UPS collection for an extra charge. Airbag24 returns it by UPS after the repair.

Enclose the printed repair order and pack the unit shock-proof.