Airbag control unit with part number 89170-02T00

What does the airbag control unit 89170-02T00 do?

The 89170-02T00 is the airbag control unit that evaluates the crash sensors in the restraint system (SRS) of Toyota. Within milliseconds, it decides in the event of an accident which airbags and seatbelt pretensioners are triggered.

The airbag warning light in the instrument cluster shows faults that the unit detects during its ongoing monitoring.

After an accident, the control unit stores crash data and locks itself.

Why does the control unit 89170-02T00 fail?

With the 89170-02T00, the most common cause is crash data stored after an accident, even if no airbag was triggered. Other causes include aged electronics, cold solder joints, moisture and corrosion on plug connectors, and voltage spikes.

A normal diagnostic tool cannot erase this data. Airbag24 erases it during the repair.

Electronics age, solder joints can go cold, and moisture or corrosion damage the plug connectors. Only a test of the individual unit can narrow this down.

Voltage spikes, for example from a weak battery or a jump start, are also possible causes.

How can you tell that the 89170-02T00 is defective?

On the 89170-02T00, the airbag warning light in the instrument cluster signals a fault as soon as it lights up permanently or intermittently. A fault message in the instrument cluster, a missing connection to the diagnostic tool or a fault memory that cannot be cleared also point to a problem.

If the warning light is on, airbags and seatbelt pretensioners may not trigger in an emergency.

In this case, have the system checked promptly rather than ignoring the warning.

Which vehicles is the 89170-02T00 fitted in?

The 89170-02T00 is fitted in these vehicles: Toyota Corolla E210 (2018-2022) and E210 Facelift (from 2022).

Below you will find the list of vehicles that are recorded for this part number in our data.

• Toyota Corolla E210 (2018-2022)
• Toyota Corolla E210 Facelift (from 2022)

Compare the part number on the label with this page to make sure it is the right unit. This comparison does not confirm the condition of the control unit. Reading out the fault memory before removal, on the other hand, shows whether the control unit is defective or whether a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 89170-02N50, 89170-02T10, 89170-02W80, 89170-0F150.

How does the repair of the 89170-02T00 work?

Repairing, checking and testing the 89170-02T00 at Airbag24 usually takes 3–4 working days. Your own steps start with reading out the fault memory, including a log.

Then disconnect the battery, remove the control unit only after that, create the repair order online and pack the unit well for dispatch.

Airbag24 checks the unit on the test bench, repairs defective components, erases crash data and carries out a functional test. Your own unit is then sent back. 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 89170-02T00 get to Airbag24?

You send the control unit 89170-02T00 as a parcel or arrange a UPS collection for an extra charge. Airbag24 returns the unit to you by UPS after the repair.

Put the printed repair order in the parcel, and pack the unit shock-proof.