Airbag control unit with part number 98820-3JC0A

What does the airbag control unit 98820-3JC0A do?

The airbag control unit 98820-3JC0A controls the SRS restraint system of Infiniti. Based on the signals from the crash sensors, it decides within milliseconds in a crash which airbags and seatbelt pretensioners to trigger.

It also checks itself continuously and reports faults via the airbag warning light. After an accident it secures crash data and locks itself; only the repair lifts the lock.

Why does the control unit 98820-3JC0A fail?

Stored crash data from an accident is the most common cause, even if no airbag has deployed. Other possible causes are ageing electronic components, moisture and corrosion at connectors, cold solder joints and voltage spikes.

The crash data stays stored in the control unit until it is removed. A normal diagnostic tool cannot delete it; Airbag24 deletes it during the repair.

The other causes develop gradually. Electronics age, contacts corrode, and voltage spikes when starting, for example with a weak battery or after a jump start, put strain on the unit.

How can you tell that the 98820-3JC0A is defective?

Signs include an airbag warning light in the instrument cluster that stays on permanently or intermittently, a fault message in the instrument cluster, a diagnostic tool with no connection to the control unit, and a fault memory that cannot be cleared. In that case, airbags and seatbelt pretensioners may not deploy in an emergency.

The display in the instrument cluster shows the state of the restraint system at all times, so it remains the main warning in everyday use. The system sets it itself as soon as it detects a fault.

A fault memory that cannot be emptied points to a fault that still exists.

Which vehicles is the 98820-3JC0A fitted in?

Airbag24 holds the vehicle assignment for this control unit. The 98820-3JC0A is fitted in these vehicles: Infiniti QX60 L50 (2012-2015).

The list of recorded vehicles follows here.

• Infiniti QX60 L50 (2012-2015)

You can compare the part number on the label of the removed unit with this page; that only confirms that it is the correct unit. Please have the fault memory read out beforehand, because only that 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 285012283, 98820-9NB0A.

How does the repair of the 98820-3JC0A work?

At Airbag24, processing usually takes 3–4 working days. Beforehand you have the fault memory read out, enclose the readout log, disconnect the battery and only then remove the control unit. Online you create a repair order and send the unit in, well packed.

The sequence is prescribed for safety reasons.

On the test bench, Airbag24 examines the unit, replaces defective components, removes the stored crash data and carries out a function test. Afterwards you get your own unit 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 98820-3JC0A get to Airbag24?

Either you send the unit as a parcel, or you book a UPS collection for an extra charge. The return after the repair is made by UPS.

Place the printed repair order in the parcel and pack the unit shockproof.