Airbag control unit with part number 98820-4CG0A

What does the airbag control unit 98820-4CG0A do?

The control unit 98820-4CG0A is the central unit of the airbag restraint system (SRS) in Nissan vehicles. It processes the data from the crash sensors, selects in an emergency the airbags and seatbelt pretensioners to be triggered, and continuously checks whether the system is operational. Any faults found are shown via the airbag warning light.

The crash sensors only supply measured values. The decision rests solely with the control unit.

If an accident happens, the unit stores the crash data and locks itself.

Why does the control unit 98820-4CG0A fail?

The most common cause is crash data from an accident in which no airbag fired. Further triggers are ageing electronic components, cold solder joints, moisture and corrosion at the plug connections, and voltage spikes in the on-board network.

Crash data remains untouched by an ordinary diagnostic tool. Airbag24 removes it as part of the repair.

The remaining causes concern the circuit board, the connections and the power supply.

How can you tell that the 98820-4CG0A is defective?

A fault shows itself mainly through the airbag warning light in the instrument cluster, which stays on permanently or intermittently. Further warning signs appear in the instrument cluster and on the diagnostic tool.

• Fault message in the instrument cluster
• no connection between the diagnostic tool and the control unit
• fault memory that cannot be cleared

As long as these signs are present, airbags and seatbelt pretensioners may fail to deploy in an emergency.

A fault therefore does not stay hidden. Have the warning checked quickly.

Which vehicles is the 98820-4CG0A fitted in?

The control unit 98820-4CG0A is fitted in these vehicles: Nissan X-Trail T32 (2014-2017) and T32 Facelift (2017-2022).

The assignment is summarised below:

• Nissan X-Trail T32 (2014-2017)
• Nissan X-Trail T32 Facelift (2017-2022)

Comparing the number on the label of the removed unit with this page only confirms that you have the right unit. The fault memory, which you have read out before removal, is what decides the cause.

For the same vehicles, we also repair control units with the part numbers 1520831000, 152083100B, 1520831U00, 1520831U01, 1520831U0A, 98820JH43A.

How does the repair of the 98820-4CG0A work?

First have the fault memory read out and enclose the log. Then disconnect the battery before the control unit is removed. Afterwards create the repair order online and send in the well-packed unit. At Airbag24, 3–4 working days are usually scheduled for inspection, repair and testing.

Airbag24 inspects the unit you have sent in, replaces faulty components, erases the crash data and finally carries out a function test. Your own unit is then sent 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 98820-4CG0A get to Airbag24?

You post the unit as a parcel or book a UPS collection for an extra charge. Airbag24 returns it by UPS after the repair. The printed repair order belongs in the parcel.

Choose shock-resistant packaging so that the control unit arrives intact.