Airbag control unit with part number 98820-3TS0A

What does the airbag control unit 98820-3TS0A do?

The airbag control unit 98820-3TS0A is the control centre of the restraint system (SRS) in Nissan. It processes the messages from the crash sensors and decides in a crash, within milliseconds, which airbags and seatbelt pretensioners trigger. At the same time it monitors the system continuously.

The evaluation runs in the background, even when the vehicle is only standing. This allows the unit to detect faults before they become a problem in an emergency.

The control unit reports faults via the airbag warning light in the instrument cluster. After a crash, it stores crash data and locks itself.

Why does the control unit 98820-3TS0A fail?

The most common cause is crash data stored after an accident, even if no airbag triggered. A normal diagnostic tool cannot erase it. Other causes are aged components, cold solder joints, moisture at connectors and voltage spikes.

The crash data are stored in the unit once an accident has been registered. That an airbag triggered is not a prerequisite for this.

Aged electronic components lose reliability over time, and cold solder joints lead to intermittent faults. Moisture and corrosion at connectors further disturb the connection.

Voltage spikes, for example from a weak battery or jump-starting, can also damage the electronics.

How can you tell that the 98820-3TS0A is defective?

A defect shows itself through the airbag warning light in the instrument cluster and through fault messages. The diagnostic tool then finds no contact with the control unit, and the fault memory cannot be cleared. In an emergency, airbags and seatbelt pretensioners may then not trigger.

Typical signs are:

• Airbag warning light, constantly or intermittently
• Fault message in the instrument cluster
• Diagnostic tool receives no connection to the control unit
• Fault memory cannot be cleared

If you notice any of these signs, have the fault memory read out before you plan further steps.

Which vehicles is the 98820-3TS0A fitted in?

The control unit 98820-3TS0A is fitted in these vehicles: Nissan Teana L33 (2013-2020). The assignment is based on this part number.

Below you will see the assigned models.

• Nissan Teana L33 (2013-2020)

Compare the part number on the label of the removed unit with this page; this only checks that it is the right unit. Also have the fault memory read out, because the 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 98820-3TN0A.

How does the repair of the 98820-3TS0A work?

First have the fault memory read out, enclose the log, and disconnect the battery before removing the control unit. Then create a repair order online and send the well-packed unit. At Airbag24, inspecting, repairing and testing usually take 3–4 working days.

On the test bench, Airbag24 checks the unit, repairs defective components and erases the stored crash data. Then comes the functional test.

Finally the 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 98820-3TS0A get to Airbag24?

Either you send the unit as a parcel, or you book a UPS collection for an extra charge. After the repair, Airbag24 sends the unit back to you via UPS.

Pack the control unit shock-resistant and include the printed repair order.