Airbag control unit with part number 89170-12G80

What does the airbag control unit 89170-12G80 do?

The airbag control unit 89170-12G80 is the central unit of the restraint system (SRS) in Toyota. It processes the signals from the crash sensors and triggers the appropriate airbags and seatbelt pretensioners within milliseconds in a crash.

At the same time, it monitors the system during operation. If it detects a fault, it indicates this via the airbag warning light.

After a crash, the unit stores crash data and locks itself. The protective effect of the vehicle therefore depends directly on this unit.

Why does the control unit 89170-12G80 fail?

The most common cause in the 89170-12G80 is crash data stored after an accident, even if no airbag has deployed. A standard diagnostic tool cannot remove this data. Other causes include ageing electronic components, cold solder joints, moisture with corrosion at plug connections, and voltage spikes.

Airbag24 removes the crash data during the repair. This erasure is part of the process and not an add-on.

The other causes act over a longer period, for example when moisture changes the contacts.

How can you tell that the 89170-12G80 is defective?

The airbag warning light in the instrument cluster lights up on the 89170-12G80 permanently or intermittently. An error message may appear in the instrument cluster, and the diagnostic tool gets no connection to the control unit. In an emergency, airbags and seatbelt pretensioners may then fail to trigger.

In this case the fault memory cannot be cleared, which further confirms the finding. The warning light is the most direct indication from the vehicle.

If you see the warning light, have the fault memory read out promptly.

Which vehicles is the 89170-12G80 fitted in?

For Toyota, the 89170-12G80 is fitted in this vehicle: Toyota Corolla E170 (2013-2018). The information is based on the stored assignment.

Here is an overview of the stored vehicles:

• Toyota Corolla E170 (2013-2018)

Comparing the part number on the label of the removed unit with this page only shows that you have the right unit. Having the fault memory read out before removal, however, 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 89170-02C70, 89170-12180, 89170-12G10, 89170-12N50.

How does the repair of the 89170-12G80 work?

First, have the fault memory read out and enclose the printout. Then disconnect the battery and only then remove the 89170-12G80. Next, create the repair order online and pack the unit carefully.

Airbag24 examines the control unit on the test bench, replaces defective components and erases the crash data. A function test completes the repair.

At Airbag24, testing and repair usually take 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 89170-12G80 get to Airbag24?

You send the control unit 89170-12G80 in as a parcel or book a UPS collection for an extra charge. Airbag24 sends it back by UPS after the repair.

Put the printed repair order into the parcel. Pack the unit shockproof.