Airbag control unit with part number 98820-9PV4B

What does the airbag control unit 98820-9PV4B do?

The airbag control unit 98820-9PV4B is the central control unit of the restraint system (SRS) in Nissan. It evaluates the crash sensors, selects the appropriate airbags and seatbelt pretensioners within milliseconds in a crash, and monitors the system continuously.

It reports faults in the system via the airbag warning light in the instrument cluster, so that you notice the fault.

After a crash, it stores crash data and locks itself.

Why does the control unit 98820-9PV4B fail?

The most common cause with the 98820-9PV4B is crash data stored after a crash, even if no airbag has deployed. Other causes include aged electronics, cold solder joints, moisture and corrosion, and voltage spikes. With this control unit, it is often not possible to erase the crash data; anyone who would like it erased should get in touch with Airbag24 briefly before sending the unit in.

A normal diagnostic tool cannot remove these entries. The other causes relate to electronics, plug connectors and the power supply.

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

How can you tell that the 98820-9PV4B is defective?

A fault in the 98820-9PV4B shows up as an airbag warning light in the instrument cluster that stays on constantly or intermittently. An error message in the instrument cluster and a fault memory that cannot be cleared are also signs.

The following signs appear in detail:

• The airbag warning light stays on constantly or intermittently
• An error message in the instrument cluster
• The diagnostic tool gets no connection to the control unit
• The fault memory cannot be cleared

In an actual crash, airbags and seatbelt pretensioners may not deploy. A quick check of the warning light is therefore advisable.

Which vehicles is the 98820-9PV4B fitted in?

The control unit 98820-9PV4B is fitted in this Nissan vehicle: Nissan Qashqai J12 (2021-2024). This assignment applies to the unit with exactly this number.

The vehicles are listed here:

• Nissan Qashqai J12 (2021-2024)

Compare the number on the label of the removed unit with this page. This only confirms that it is the correct unit. Have the fault memory read out beforehand as well, because only that result shows whether the control unit is defective or whether a connector or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 98820-6UD0B, 98820-6UM0B, 98820-6UT0A, 98820-6UT0B, 98820-9PV0A, 98820-9PV0C.

How does the repair of the 98820-9PV4B work?

Start by reading out the fault memory and enclosing the log with the 98820-9PV4B. Then disconnect the battery, remove the unit only after that, and create a repair order online before sending it in well packed.

Airbag24 checks the control unit on the test bench, replaces defective components and carries out a functional test. Checking, repairing and testing usually take 3–4 working days there. If you would like the crash data erased, get in touch with Airbag24 briefly before sending the unit in. The 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 98820-9PV4B get to Airbag24?

You send the control unit 98820-9PV4B in as a parcel to Airbag24 or book a UPS collection for an extra charge. The return after the repair is made by UPS.

Enclose the printed repair order in the parcel and pack the unit shockproof.