Airbag control unit with part number 98820-3JD0A

What does the airbag control unit 98820-3JD0A do?

The airbag control unit 98820-3JD0A coordinates the restraint system (SRS) in vehicles of Infiniti. It checks the signals from the crash sensors and decides in an impact which airbags and seatbelt pretensioners are triggered.

This decision is made within the millisecond range. At the same time the unit monitors all components permanently and shows faults via the airbag warning light.

An accident causes the unit to store crash data and lock itself.

Why does the control unit 98820-3JD0A fail?

The most common cause: crash data stored after an accident, even if no airbag was triggered. Other causes are aging components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes from a weak battery or jump-starting.

A normal diagnostic tool is not sufficient to remove crash data. The data stays stored until Airbag24 erases it during the repair.

Other causes include:

• aging of electronic components
• cold solder joints
• moisture and corrosion on contacts
• voltage spikes when jump-starting

How can you tell that the 98820-3JD0A is defective?

A defect can be recognised by the behaviour of the airbag warning light. It lights up permanently or intermittently. Added to this are fault messages in the instrument cluster, a missing contact with the diagnostic tool and a fault memory that cannot be cleared.

The signs in detail:

• Airbag warning light on permanently or intermittently
• Fault message in the instrument cluster
• Diagnostic tool without connection to the control unit
• Fault memory cannot be cleared

In the event of a defect, airbags and seatbelt pretensioners may not trigger in an emergency. Whether the control unit itself or the connection is affected must be clarified by the examination.

Which vehicles is the 98820-3JD0A fitted in?

The 98820-3JD0A is fitted in these vehicles: Infiniti QX60 L50 (2012-2015).

Here is the list of stored models:

• Infiniti QX60 L50 (2012-2015)

Compare the part number on the label of the removed unit with this page. This only confirms the identity of the unit. Have the fault memory read out beforehand, because only this log shows whether the unit itself is defective or whether a plug or cable is causing the problem.

For the same vehicles, we also repair control units with the part numbers 285012283, 98820-9NB0A.

How does the repair of the 98820-3JD0A work?

First have the fault memory read out and enclose the log with the parcel. Then disconnect the battery, remove the control unit and create a repair order online. Afterwards pack the unit well and send it in.

At Airbag24 the unit goes to the test bench. There, damage to components is rectified, crash data is erased and a function test is carried out. For these steps at Airbag24, 3–4 working days are usually scheduled.

Afterwards your 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 98820-3JD0A get to Airbag24?

The unit is sent in as a parcel or collected by UPS for an extra charge. After the repair it returns to you by UPS.

The repair order must be printed and placed in the parcel. The unit must be packed shock-proof.