Airbag control unit with part number 98820-1MX0B

What does the airbag control unit 98820-1MX0B do?

The airbag control unit 98820-1MX0B forms the heart of the restraint technology at Infiniti, that is, the central control unit of the SRS. It evaluates the crash sensors and decides in an accident which airbags and seatbelt pretensioners are triggered.

The decision is made within milliseconds. In addition, the unit continuously checks the system for faults and displays them via the airbag warning light in the instrument cluster.

After an accident, the control unit stores crash data and locks itself.

Why does the control unit 98820-1MX0B fail?

The most common cause is crash data from an accident that remain stored even if no airbag has triggered. A normal diagnostic tool cannot delete them. Airbag24 deletes the crash data during the repair of the 98820-1MX0B.

Besides that, causes without an accident play a role. Electronic components age, solder joints can go cold, and moisture with corrosion attacks plug connections. Voltage spikes, for example from a weak battery or a jump start, also strain the electronics.

How can you tell that the 98820-1MX0B is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently. In addition there is a fault message in the instrument cluster and a diagnostic tool that cannot connect to the control unit.

• Airbag warning light lights up permanently or intermittently
• Fault message in the instrument cluster
• Diagnostic tool gets no connection to the control unit
• Fault memory cannot be cleared

With these signs, airbags and seatbelt pretensioners may possibly fail to trigger in an emergency. Have the finding clarified promptly.

Which vehicles is the 98820-1MX0B fitted in?

The control unit 98820-1MX0B is fitted in these vehicles: Infiniti M35 Y51 (2010-2013). To compare it with your car, use the details on the unit.

The vehicles are recorded in this list:

• Infiniti M35 Y51 (2010-2013)

Compare the part number on the label of the removed unit with this page. This ensures that you have the correct unit. The fault memory should also be read out, because only this log shows whether the control unit is defective or whether a plug or a cable is the cause.

For the same vehicles, we also repair control units with the part numbers K8820-1MR1A, K8820-1MX0B.

How does the repair of the 98820-1MX0B work?

Processing at Airbag24 usually takes 3–4 working days. Before that, read out the fault memory, enclose the log and disconnect the battery. Only then remove the control unit and create the repair order online.

Send in the well-packed unit. Airbag24 examines it on the test bench, repairs defective components and deletes the crash data. Then a function test follows, after which your own unit is returned.

This time information refers solely to the work at Airbag24.

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 98820-1MX0B get to Airbag24?

You send the control unit 98820-1MX0B as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 sends it back to you by UPS.

Place the printed repair order in the parcel and pack the control unit shock-proof.