Airbag control unit with part number 98820-1MU0A

What does the airbag control unit 98820-1MU0A do?

The airbag control unit 98820-1MU0A controls the restraint system of Infiniti. It evaluates the crash sensors, determines in an accident which airbags and seatbelt pretensioners are triggered, and monitors the entire system. After an accident it stores crash data and locks itself.

In everyday use the unit goes unnoticed. It does, however, constantly check the connections and functions, and if it detects a deviation, the airbag warning light in the instrument cluster lights up.

After an accident it stores crash data and locks itself. The following sections show what consequences you may have to expect.

Why does the control unit 98820-1MU0A fail?

Most often it fails because of stored crash data, even if no airbag was triggered. A normal diagnostic tool cannot erase this data.

The crash data means the fault cannot be narrowed down clearly. As a result cables and plugs can be suspected first, although the control unit itself is the cause.

Alongside this, aged electronic components, moisture and corrosion at plug connections, and voltage spikes play a role. A weak battery or jump starting can additionally stress the electronics.

How can you tell that the 98820-1MU0A is defective?

A defect shows when the airbag warning light in the instrument cluster stays on permanently or intermittently, an error message appears there, or the diagnostic tool cannot establish a connection. If the fault memory cannot be cleared, the suspicion is justified.

The airbag warning light is the most important sign. It either burns continuously or flickers, and in both cases the system is not fully in order.

As long as the fault persists, airbags and seatbelt pretensioners may fail to trigger in an emergency. The finding should therefore be clarified promptly, before the problem becomes entrenched.

Which vehicles is the 98820-1MU0A fitted in?

The control unit 98820-1MU0A is fitted in these vehicles: Infiniti M37 Y51 (2010-2013).

The list names the vehicles in which this part number is known.

• Infiniti M37 Y51 (2010-2013)

Before removing the unit, have the fault memory read out. That establishes whether the control unit is defective or whether a plug or cable causes the fault. Then compare the part number on the label with the information here.

For the same vehicles, we also repair control units with the part numbers 98820-1MA1C.

How does the repair of the 98820-1MU0A work?

At Airbag24 processing usually takes 3–4 working days. There the unit is checked on the test bench, defective components are replaced and the crash data is deleted.

Before dispatch, read out the fault memory, disconnect the battery and remove the control unit. Then create the repair order online and pack the unit well.

A function test follows, after which your own 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 98820-1MU0A get to Airbag24?

You send the control unit 98820-1MU0A as a parcel or book a UPS collection for an extra charge. After the repair Airbag24 sends it back to you by UPS.

Put the printed repair order into the parcel and pack the control unit shockproof.