Airbag control unit with part number 98820-9DL3A

What does the airbag control unit 98820-9DL3A do?

The airbag control unit 98820-9DL3A controls the SRS restraint system of Nissan and is therefore responsible for airbags and seatbelt pretensioners. In an accident it decides within milliseconds which of them are triggered.

It checks the system continuously. If it detects a fault, this appears on the airbag warning light. After an accident it writes crash data to memory and locks itself.

Why does the control unit 98820-9DL3A fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed. A diagnostic tool from the trade does not erase this data. Aged components, cold solder joints, moisture and corrosion on connectors, and voltage spikes are also possible causes.

A weak battery and a jump start are typical triggers of voltage spikes. The fault memory is decisive for the cause in each individual case.

How can you tell that the 98820-9DL3A is defective?

The airbag warning light in the instrument cluster stays on permanently or only intermittently. Error messages in the instrument cluster, no connection to the diagnostic tool, and a fault memory that cannot be cleared are additional indications of a defect.

If the control unit is defective, airbags and seatbelt pretensioners may fail to deploy in an emergency. A prompt check is therefore sensible.

Which vehicles is the 98820-9DL3A fitted in?

The airbag control unit 98820-9DL3A is fitted in these vehicles: Nissan Maxima A36 (2015-2023).

The vehicle list is compiled here:

• Nissan Maxima A36 (2015-2023)

Comparing the part number on the label of the removed unit with this page ensures that it is the right unit. Have the fault memory read out beforehand. This log shows whether the control unit itself is defective or whether a connector or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 98820-3Y600, 98820-AV200, 98820-AV21A.

How does the repair of the 98820-9DL3A work?

Start by reading out the fault memory and enclose the log. Then disconnect the battery and remove the control unit. Afterwards create a repair order online and send the well packed unit in. Processing at Airbag24 usually takes 3–4 working days.

This order is mandatory for safety reasons.

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

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 98820-9DL3A get to Airbag24?

You send the unit in as a parcel, or you book a UPS collection for an extra charge. After the repair, Airbag24 returns your unit by UPS.

The parcel contains the shock-proof packed control unit and the printed repair order.