Airbag control unit with part number 98820-1CA0D

What does the airbag control unit 98820-1CA0D do?

The 98820-1CA0D is the central control unit of the SRS restraint system in the Infiniti. It processes the readings from the crash sensors, decides in an accident whether airbags and seatbelt pretensioners are triggered, and continuously checks the system for faults.

The unit shows faults via the airbag warning light. After an accident it stores crash data and locks itself; this lock is a feature that any work on the unit has to take into account.

Why does the control unit 98820-1CA0D fail?

Stored crash data is the most common cause on the 98820-1CA0D: it arises after an accident, even if no airbag has deployed, and a normal diagnostic tool cannot erase it. The other causes involve aged electronics, cold solder joints, moisture and corrosion at connectors, and voltage spikes.

That no airbags have deployed does not mean that nothing is recorded in the unit. Airbag24 erases the crash data during the repair.

Voltage spikes, for example from a weak battery or a jump start, additionally strain the electronics. Such causes are among the possible triggers, just like the other points mentioned.

How can you tell that the 98820-1CA0D is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, an error message appears on the display, the diagnostic tool cannot reach the control unit, and the fault memory cannot be cleared. On the 98820-1CA0D, these signs indicate a defect.

In an emergency, the airbags and seatbelt pretensioners may then fail to deploy. Therefore have the findings checked by a specialist workshop before you continue driving.

Which vehicles is the 98820-1CA0D fitted in?

The 98820-1CA0D was fitted in these models: Infiniti QX70 S51 Facelift (2013-2018) and S51 (2008-2013).

The assignment in our data is shown in this list:

• Infiniti QX70 S51 Facelift (2013-2018)
• Infiniti QX70 S51 (2008-2013)

Comparing the part number on the label of the removed control unit with this page only ensures that you have the right unit. Whether a defect lies in the control unit or a connector or cable is the cause is shown only by the fault memory, which you have read out beforehand.

For the same vehicles, we also repair control units with the part numbers 98820-3WY0A, 98820-3WY0B, 98820-3WY0C, 988201CA0A.

How does the repair of the 98820-1CA0D work?

You read out the fault memory, enclose the log and disconnect the battery. Then you remove the 98820-1CA0D and create a repair order online. You send the well-packed unit in, whereupon Airbag24 checks it, repairs defective components, erases crash data and carries out a function test.

The order, battery before removal, serves safety. Processing at Airbag24 usually takes 3–4 working days, as this covers only checking, repairing and testing. Afterwards your own unit is returned 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 98820-1CA0D get to Airbag24?

For shipping, you use a parcel or a UPS collection, which you book for an extra charge. Airbag24 returns the control unit 98820-1CA0D to you by UPS after the repair.

Enclose the printed repair order and pad the unit so it is shock-proof.