Airbag control unit with part number 89170-12M80

What does the airbag control unit 89170-12M80 do?

The airbag control unit 89170-12M80 is the central control unit of the restraint system (SRS) for Toyota. It evaluates the signals from the crash sensors and decides in an accident, within milliseconds, which airbags and seatbelt pretensioners are triggered.

While driving, it monitors the entire system continuously and reports faults via the airbag warning light in the instrument cluster. After an accident, it stores crash data and locks itself.

Why does the control unit 89170-12M80 fail?

With the control unit 89170-12M80, the most common cause is stored crash data after an accident, even if no airbag has deployed. Other causes include ageing electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes, for example from a weak battery or a jump start.

Crash data cannot be erased with a standard diagnostic tool. Airbag24 erases it during the repair.

How can you tell that the 89170-12M80 is defective?

A defect on the 89170-12M80 is shown by an airbag warning light that stays on permanently or intermittently, by a fault message in the instrument cluster, by a missing connection of the diagnostic tool to the control unit, or by a fault memory that cannot be cleared.

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

With such signs, the airbags and seatbelt pretensioners may fail to deploy in an emergency. The warning light makes the defect visible, which is why it is worth looking at the instrument cluster.

Which vehicles is the 89170-12M80 fitted in?

The 89170-12M80 is fitted in these vehicles: Toyota Corolla E170 (2013-2018).

The following vehicles are stored for this part number:

• Toyota Corolla E170 (2013-2018)

Compare the part number on the label of the removed unit with this page, and you know that it is the correct unit. Also have the fault memory read out beforehand, because only the result shows whether the control unit itself is the cause or a plug or cable is.

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 89170-12M80 work?

First have the fault memory read out and enclose the log. Then disconnect the battery and only then remove the 89170-12M80. Then create a repair order online and send the unit in well packed.

Airbag24 tests the unit on the test bench, replaces defective components, erases the stored crash data and carries out a function test. After that, your own unit is returned to you.

Processing at Airbag24 usually takes 3–4 working days. This period applies only 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 89170-12M80 get to Airbag24?

You send the control unit 89170-12M80 as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 returns the unit to you by UPS.

Put the printed repair order into the parcel and pack the unit so that it is shock-resistant.