Airbag control unit with part number 98820-5SL0A

What does the airbag control unit 98820-5SL0A do?

The airbag control unit 98820-5SL0A is the central control unit of the restraint system (SRS) for Nissan. It evaluates the signals from the crash sensors and decides in an accident, within milliseconds, which airbags and seatbelt pretensioners are triggered.

The system is monitored continuously during operation, and the control unit is the part that carries out this monitoring.

It shows faults via the airbag warning light in the instrument cluster. After an accident it stores crash data and locks itself; this affects the unit itself.

Why does the control unit 98820-5SL0A fail?

Stored crash data is the most common cause, even if no airbag has been triggered. In addition, these further causes apply:

• aged electronic components
• cold solder joints
• moisture and corrosion on plug connections
• voltage spikes, for example from a weak battery or jump-starting

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

Which of the further causes applies is only shown by the inspection of the unit.

How can you tell that the 98820-5SL0A is defective?

A defect in the airbag control unit 98820-5SL0A shows up as the airbag warning light, as fault messages in the instrument cluster, as a missing connection to the diagnostic tool and as a fault memory that cannot be cleared.

• Airbag warning light stays on permanently or comes on intermittently
• Fault message in the instrument cluster
• Diagnostic tool has no connection to the control unit
• Fault memory cannot be cleared

In the worst case, the airbags and seatbelt pretensioners may not deploy. Have the system checked promptly.

A warning light that comes on only intermittently also indicates a detected fault.

Which vehicles is the 98820-5SL0A fitted in?

The control unit 98820-5SL0A is fitted in these vehicles: Nissan Leaf ZE1 (from 2017).

The following vehicles are assigned to this part number:

• Nissan Leaf ZE1 (from 2017)

Compare the part number on the label of the removed unit with this page, so that you can be sure you have the right unit. Also have the fault memory read out beforehand. 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 98820-4NS0A, 98820-4NS9A, 98820-5SA0E.

How does the repair of the 98820-5SL0A work?

First read out the fault memory and enclose the log. Then disconnect the battery and only after that remove the control unit. Next, create a repair order online and send the unit in well packed. Airbag24 needs 3–4 working days in total for testing, repair and the function test.

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

The 3–4 working days relate only to this work at Airbag24. After that, your own unit goes back 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 98820-5SL0A get to Airbag24?

You send the control unit 98820-5SL0A 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.