Airbag control unit with part number 89170-02R80

What does the airbag control unit 89170-02R80 do?

The airbag control unit 89170-02R80 controls the restraint system (SRS) of Toyota. It checks the crash sensors, decides within milliseconds in an accident whether airbags and seatbelt pretensioners are triggered, and monitors the system during operation.

The airbag warning light shows when the unit has detected a fault. This keeps the state of the system in the vehicle visible at all times.

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

Why does the control unit 89170-02R80 fail?

Stored crash data is the most common cause, after an accident, even if no airbag was triggered. Aged components, moisture and corrosion on plugs, cold solder joints and voltage peaks are also possible.

Crash data cannot be removed with an ordinary diagnostic tool. Airbag24 erases it during the repair.

The other causes affect the electronics gradually. Jump-starting or a weak battery can cause voltage peaks that damage the unit.

How can you tell that the 89170-02R80 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, and a fault message appears. The diagnostic tool finds no connection to the control unit, and the fault memory cannot be cleared. In an emergency, airbags and seatbelt pretensioners may then fail to deploy.

These signs clearly indicate a defect. Only reading out the fault memory shows which cause lies behind it.

Which vehicles is the 89170-02R80 fitted in?

The control unit 89170-02R80 is fitted in these vehicles: Toyota Corolla E210 (2018-2022) and E210 Facelift (from 2022).

The following vehicles are on record for this part number:

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

Comparing the part number on the label of the removed unit with this page only tells you that it is the correct unit. Also have the fault memory read out before you remove the control unit. Only the log 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 89170-02R80 work?

At Airbag24, processing usually takes 3–4 working days. Beforehand, read out the fault memory and attach the log. Then disconnect the battery and only then remove the control unit. Online, you create a repair order and send the well-packed unit in.

Airbag24 tests the control unit on the test bench, replaces defective components, erases the stored crash data and carries out a function test. Afterwards your own unit 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 89170-02R80 get to Airbag24?

You send the unit as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 sends it back to you by UPS.

Put the printed repair order into the parcel. Pack the unit shock-proof, so that it arrives undamaged.