Airbag control unit with part number 98820-5AD0B

What does the airbag control unit 98820-5AD0B do?

The airbag control unit 98820-5AD0B controls the restraint system (SRS) for Nissan. In a crash it evaluates the crash sensors and determines within milliseconds which airbags and seatbelt pretensioners fire. It monitors the state of the system constantly and shows faults via the airbag warning light.

While driving, the control unit compares the signals of the components with stored target values. Every deviation is recorded in the fault memory.

After an accident it secures crash data and locks itself. This process takes place inside the control unit, even if the vehicle looks undamaged from the outside.

Why does the control unit 98820-5AD0B fail?

Most often the cause is crash data left in the memory after an accident, even without an airbag having triggered. A normal diagnostic tool does not erase it. Other possible causes are aged electronic components, cold solder joints, moisture and corrosion on plug connectors, and voltage spikes from a weak battery or jump-starting.

Crash data is one reason a unit can show a fault on an undamaged vehicle. A diagnostic tool can access it, but not in a way that would allow it to be removed.

The other causes tend to develop slowly. Over time electronic components age, solder joints give way with temperature changes, and moisture or corrosion weaken the contact at plug connectors.

How can you tell that the 98820-5AD0B is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, a fault message appears in the instrument cluster, the diagnostic tool finds no connection to the control unit, and the fault memory cannot be cleared. In an emergency, airbags and seatbelt pretensioners may then not trigger.

The light indicates a detected fault in the system, even if it goes out again in between. Please take this warning seriously.

The message in the instrument cluster names the finding only. What lies behind it is shown only by the analysis in the diagnostic tool.

Which vehicles is the 98820-5AD0B fitted in?

The 98820-5AD0B is fitted in these vehicles: Nissan Murano Z52 (2015-2024).

The following list shows the vehicles that Airbag24 assigns to this part number.

• Nissan Murano Z52 (2015-2024)

Compare the part 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, because only this result shows whether the control unit is defective or whether a plug or a cable is the cause.

For the same vehicles, we also repair control units with the part numbers 629198200, 988205AA0A.

How does the repair of the 98820-5AD0B work?

Have the fault memory read out and attach the log. Then disconnect the battery and only then remove the control unit. Then create a repair order online and send the unit in. Processing at Airbag24 usually takes 3–4 working days.

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

The order of these steps is for your safety. The 3–4 working days apply exclusively to the work 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 98820-5AD0B get to Airbag24?

You send the unit as a parcel or 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.