Airbag control unit with part number 89170-12E80

What does the airbag control unit 89170-12E80 do?

The airbag control unit 89170-12E80 coordinates the airbags and seatbelt pretensioners in the restraint system (SRS) for Toyota. In a collision, it processes the crash sensors within fractions of a second and decides on triggering.

The system is monitored continuously, and faults appear via the airbag warning light in the instrument cluster. After an accident, the unit stores crash data and locks itself.

Why does the control unit 89170-12E80 fail?

The most common cause for the 89170-12E80 is crash data after an accident, even without a triggered airbag. A normal diagnostic tool cannot erase this data. Other causes include aged components, cold solder joints, moisture at plugs and voltage spikes.

Crash data left in the unit is removed by Airbag24 during the repair. The other causes concern components, solder joints and plug connections. Electronics age, solder joints become brittle over time, and moisture attacks the contacts. Voltage spikes arise, among other things, when starting with external power.

How can you tell that the 89170-12E80 is defective?

You can recognise a defect in the 89170-12E80 by the airbag warning light, which lights up constantly or intermittently, and by a fault message in the instrument cluster. Add to this a missing connection to the diagnostic tool and a fault memory that cannot be cleared.

• Airbag warning light lights up constantly or intermittently
• Fault message in the instrument cluster
• Diagnostic tool establishes no connection
• Fault memory cannot be cleared

If the system is faulty, airbags and seatbelt pretensioners may not trigger in an emergency. A prompt check is therefore advisable.

Which vehicles is the 89170-12E80 fitted in?

Whether your vehicle is affected can be checked with the vehicle documents. The control unit 89170-12E80 is intended for Toyota and is fitted in these vehicles: Toyota Corolla E170 (2013-2018).

These vehicles are listed:

• Toyota Corolla E170 (2013-2018)

Have the fault memory read out before removal. Only this result shows whether the control unit is defective or a plug or cable is the cause. Compare the part number with this page afterwards; it only shows that this is the correct unit.

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 89170-12E80 work?

First have the fault memory read out and enclose the log, then disconnect the battery. Only then remove the control unit 89170-12E80. Create the repair order online, then send the well-packed unit in. Processing at Airbag24 usually takes 3–4 working days.

Airbag24 checks the control unit on the test bench, renews defective components, erases the crash data and carries out a function test. Afterwards, your own unit is returned 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 89170-12E80 get to Airbag24?

You send the control unit 89170-12E80 in as a parcel, or you book a UPS collection for an extra charge. Airbag24 sends it back via UPS after the repair.

Enclose the printed repair order with the unit and pad it well.