Airbag control unit with part number 98820-3JH0B

What does the airbag control unit 98820-3JH0B do?

The airbag control unit 98820-3JH0B is the central control unit of the restraint system (SRS) for Infiniti. It evaluates the signals from the crash sensors, decides in an accident within milliseconds whether airbags and seatbelt pretensioners are triggered, and monitors the entire system. After an accident, it stores crash data and locks itself.

During normal driving, the control unit goes unnoticed. If it detects a fault, it reports this via the airbag warning light in the instrument cluster.

Why does the control unit 98820-3JH0B fail?

The most common cause is stored crash data after an accident, even if no airbag was triggered. Other triggers are ageing, moisture and voltage spikes.

Crash data cannot be deleted with a common diagnostic tool. Airbag24 takes care of this during the repair.

Other causes to consider are:

• aged electronic components
• cold solder joints
• moisture and corrosion on connectors
• voltage spikes, for example from a weak battery or a jump start

How can you tell that the 98820-3JH0B is defective?

A permanently or intermittently lit airbag warning light, an error message in the instrument cluster, a diagnostic tool without connection to the control unit, or a fault memory that cannot be cleared all point to a defect.

One of these signs is enough to have the finding checked. In an emergency, airbags and seatbelt pretensioners may then fail to trigger, so please have it checked promptly.

Which vehicles is the 98820-3JH0B fitted in?

The control unit 98820-3JH0B is fitted in these vehicles: Infiniti QX60 L50 (2012-2015). Whether your vehicle is included can be seen from the details in the vehicle registration document.

The vehicle list in detail:

• Infiniti QX60 L50 (2012-2015)

Comparing the part number on the label of the removed unit only shows that it is the correct unit. Greater clarity comes from having the fault memory read out before removal, because it shows whether the control unit or a plug or cable is affected.

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

How does the repair of the 98820-3JH0B work?

First have the fault memory read out and attach the log, then disconnect the battery from the mains. Then remove the control unit, create a repair order online and pack it well before sending it. Airbag24 checks it on the test bench, repairs defective components, deletes the stored crash data and carries out a function test. Your own unit is then returned.

For checking, repairing and testing, Airbag24 generally estimates 3–4 working days.

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 98820-3JH0B get to Airbag24?

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

Enclose the printed repair order and pack the control unit shock-proof.