Airbag control unit with part number 98820-ZL50B

What does the airbag control unit 98820-ZL50B do?

The airbag control unit 98820-ZL50B controls the restraint system for Nissan vehicles. It evaluates the crash sensors and decides within a very short time in an event which airbags and seatbelt pretensioners are triggered.

At the same time, it checks the connected components and records faults in the fault memory. The airbag warning light in the instrument cluster shows such faults.

If an accident occurs, the control unit secures the crash data and then locks itself.

Why does the control unit 98820-ZL50B fail?

The most common cause is the crash data that remains stored after an accident, even if no airbag has deployed. A normal diagnostic tool cannot erase it. Other causes include aged electronic components, cold solder joints, moisture at plug connections, and voltage spikes.

The crash data stays in the memory even when the vehicle drives normally again after the accident. The repair at Airbag24 erases it.

The other causes mainly concern the electronics themselves and their connections: components age, solder joints turn cold, plug connections become damp or corrode, and voltage spikes stress the electronics.

How can you tell that the 98820-ZL50B is defective?

A defect shows up as the airbag warning light in the instrument cluster staying on permanently or intermittently, as an error message in the instrument cluster, or as a diagnostic tool that cannot connect to the control unit. A fault memory that cannot be cleared is also a sign. In an emergency, airbags and seatbelt pretensioners may then fail to deploy.

The warning light remains the most important warning signal in everyday use. It comes on as soon as the control unit detects a fault in the system, and it shows this information directly in the vehicle.

If you notice any of these signs, have the system checked promptly and the fault memory read out.

Which vehicles is the 98820-ZL50B fitted in?

The control unit 98820-ZL50B is fitted in these vehicles: Nissan Xterra N50 (2005-2008) and N50 Facelift (2008-2015).

The following overview shows which vehicles are recorded for this part number.

• Nissan Xterra N50 (2005-2008)
• Nissan Xterra N50 Facelift (2008-2015)

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

For the same vehicles, we also repair control units with the part numbers 28556-EC00B, 98820-AV200, 98820-AV21A, 98820-ZP31A.

How does the repair of the 98820-ZL50B work?

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

Airbag24 checks the unit on the test bench, repairs defective components, erases the crash data and carries out a function test. Afterwards your own unit goes back to you.

Processing at Airbag24 usually takes 3–4 working days. This time applies only to the checking, repair and testing.

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-ZL50B get to Airbag24?

You send the control unit 98820-ZL50B to Airbag24 as a parcel, or you book a UPS collection for an extra charge. After the repair, Airbag24 sends it back to you by UPS.

Put the printed repair order into the parcel and pack the unit shock-proof. Make sure it does not shift inside the carton.