Airbag control unit with part number 89170-12D60

What does the airbag control unit 89170-12D60 do?

In the Toyota, the airbag control unit 89170-12D60 is the control unit of the restraint system (SRS). It receives the messages from the crash sensors, decides on triggering within milliseconds and then monitors the system. After a crash, it stores crash data and locks itself.

During normal operation, the check runs unobtrusively in the background. If faults occur, the unit records them in the fault memory and makes them visible via the airbag warning light.

The control unit activates the seatbelt pretensioners, which pull the belt tight in a crash. They work closely together with the airbags.

Why does the control unit 89170-12D60 fail?

The most common cause is crash data stored in the unit after an accident, even if no airbag has deployed; a normal diagnostic tool cannot erase it. Aged electronics, cold solder joints, moisture and corrosion at plug connections, and voltage spikes, for example from a weak battery or jump-starting, also play a role.

Stored crash data does not necessarily mean that visible damage is present. That is why it is worth having the control unit checked even when the airbags appear undamaged.

Moisture and corrosion act on plug connections over a long period. A weak battery or jump-starting can additionally load the electronics with voltage spikes.

How can you tell that the 89170-12D60 is defective?

The airbag warning light in the instrument cluster lights up continuously or flashes intermittently. In addition, an error message appears, the diagnostic tool gets no connection to the control unit, and the fault memory cannot be erased. In this state, airbags and seatbelt pretensioners may possibly fail to trigger in an emergency.

The warning light is the clearest sign that the system has detected a fault. Even if the car still drives normally, have the warning checked.

A missing connection to the diagnostic tool can also be due to plugs or wiring. Only the investigation shows which case applies.

Which vehicles is the 89170-12D60 fitted in?

The control unit 89170-12D60 is fitted in these vehicles: Toyota Corolla E170 (2013-2018).

The vehicles matching this part number are in the following list:

• Toyota Corolla E170 (2013-2018)

Comparing the part number on the label of the removed unit with this page only confirms that the part number matches. Only the fault memory, once read out, shows whether the control unit is defective or a plug or cable is the cause. Therefore have it read out before removal.

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 89170-12D60 work?

First have the fault memory read out and attach the log. Then disconnect the battery and only after that remove the control unit. Next, create a repair order online and send the unit in well packed. Processing at Airbag24 usually takes 3–4 working days.

In Airbag24's test operation, defective components are dealt with first, stored crash data is erased, and a function test concludes the work. Your own unit then 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 89170-12D60 get to Airbag24?

Either you hand in the control unit as a parcel, or you book a UPS collection for an extra charge. The return after the repair is made by UPS.

Print out the repair order and enclose it with the parcel. Pack the unit so that it withstands knocks.