Airbag control unit with part number 98820-9WD1A

What does the airbag control unit 98820-9WD1A do?

The airbag control unit 98820-9WD1A forms the central control unit within the restraint system (SRS) of Nissan. It reads the signals from the crash sensors and, in an accident, decides within milliseconds which airbags and seatbelt pretensioners are triggered. After an accident it stores crash data and locks itself.

The unit monitors the entire system without interruption. If it finds a fault, it reports this via the airbag warning light in the instrument cluster.

Sensors and control unit work closely together. If this interaction is disturbed, the unit detects the fault and displays it.

Why does the control unit 98820-9WD1A fail?

With the 98820-9WD1A, the most common cause lies in crash data stored after an accident, even if no airbag has been triggered. Ageing electronics, cold solder joints, moisture at plug connections and voltage spikes come on top of that.

Crash data cannot be erased with a normal diagnostic tool. Airbag24 removes it during the repair.

The further causes are general in nature and concern the components themselves, their connections and the power supply.

• ageing electronic components
• cold solder joints
• moisture and corrosion at plug connections
• voltage spikes, for example from a weak battery or a jump start

How can you tell that the 98820-9WD1A is defective?

A defect in the 98820-9WD1A first shows up as the airbag warning light, which lights up continuously or intermittently. Fault messages in the instrument cluster and a diagnostic tool that cannot establish a connection to the control unit are added to this.

A fault memory that cannot be cleared also belongs to this picture. While this condition persists, airbags and seatbelt pretensioners may possibly not trigger in an emergency.

The indication is therefore not a minor finding, but a warning sign that calls for a check.

Which vehicles is the 98820-9WD1A fitted in?

The airbag control unit 98820-9WD1A is fitted in these vehicles: Nissan Pathfinder R52 (2013-2016) and R52 Facelift (2016-2021).

This list shows the vehicles for which this part number is on record:

• Nissan Pathfinder R52 (2013-2016)
• Nissan Pathfinder R52 Facelift (2016-2021)

Compare the part number on the label of the removed unit with this page to make sure it is the correct unit. Whether the control unit is defective, or whether a plug or a cable is the cause, is shown only by the fault memory log that you had read out beforehand.

For the same vehicles, we also repair control units with the part numbers 285013305, 98820-9PC5A.

How does the repair of the 98820-9WD1A work?

First have the fault memory read out and attach the log, then disconnect the battery and remove the 98820-9WD1A. Processing at Airbag24 usually takes 3–4 working days.

Only then create a repair order online and pack the unit well. Airbag24 checks it on the test bench, replaces defective components, erases the stored crash data and carries out a functional test.

Afterwards the unit goes back to you. The stated deadline applies exclusively to checking, repairing and testing at Airbag24.

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 98820-9WD1A get to Airbag24?

You send the 98820-9WD1A to us as a parcel or book a UPS collection for an extra charge. After the repair the unit comes back to you by UPS.

Place the printed repair order in the parcel and pack the control unit shockproof.