Airbag control unit with part number 89170-02G00

What does the airbag control unit 89170-02G00 do?

The airbag control unit 89170-02G00 is the central unit of the restraint system (SRS) of Toyota. It processes the readings from the crash sensors, determines within fractions of a second in an accident which airbags and seatbelt pretensioners to trigger, and monitors the system without interruption. If it detects a fault, it shows this via the airbag warning light.

After an accident the unit stores crash data and locks itself. Every later fault search therefore begins with this state.

Why does the control unit 89170-02G00 fail?

With the 89170-02G00, the most common cause after an accident is stored crash data, even if no airbag has triggered. Other causes are aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes from weak batteries or jump starts.

The crash data remains in the memory because a normal diagnostic tool cannot erase it. Airbag24 removes it during the repair.

Aged electronics and cold solder joints show up over time. Moisture and corrosion disrupt the connection between the control unit and the sensors, so signals fail to arrive or are distorted.

How can you tell that the 89170-02G00 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently in the event of a defect on the 89170-02G00. An error message in the instrument cluster, a diagnostic tool without a connection to the control unit and a fault memory that cannot be cleared confirm this. Then the airbags and seatbelt pretensioners may not be able to trigger in an emergency.

The light is the first sign you will notice in the vehicle. It shows the fault directly, so a check is worthwhile as soon as it comes on.

Which vehicles is the 89170-02G00 fitted in?

The 89170-02G00 is fitted in these vehicles: Toyota Corolla E170 (2013-2018) and E160 (2012-2018). The assignment applies to this part number.

The vehicles stored for this part number are shown in this list:

• Toyota Corolla E170 (2013-2018)
• Toyota Corolla E160 (2012-2018)

To compare, first check the part number on the label of the removed unit against this page. That only clarifies whether it is the right unit. Before that, have the fault memory read out, because only this result shows whether the control unit itself is defective or whether a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 89170-02C60, 89170-02C70, 89170-02C80, 89170-02C90, 89170-02G60, 89170-12160.

How does the repair of the 89170-02G00 work?

First have the fault memory read out and attach the log. In the next step disconnect the battery and remove the 89170-02G00. Finally, create the repair order online and send the unit in well packed.

Airbag24 examines the unit on the test bench, replaces defective components, deletes the stored crash data and then runs a function test.

Processing at Airbag24 usually takes 3–4 working days. After that your own unit comes 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 89170-02G00 get to Airbag24?

Either you send the 89170-02G00 to Airbag24 as a parcel, or you book a UPS collection for an extra charge. The return after the repair is made by UPS.

Put the printed repair order into the parcel and protect the unit against shocks.