Airbag control unit with part number 89170-02S00

What does the airbag control unit 89170-02S00 do?

The airbag control unit 89170-02S00 coordinates the restraint system in Toyota vehicles. In the event of an accident, it evaluates the crash sensors and determines which airbags and seatbelt pretensioners are triggered.

Ongoing monitoring detects faults and records them in the fault memory. The airbag warning light in the instrument cluster indicates these faults.

An accident causes the control unit to secure crash data and then to be locked.

Why does the control unit 89170-02S00 fail?

The most common cause is crash data stored after an accident, even if no airbag was triggered. A normal diagnostic tool cannot erase it. Other causes include aged electronics, cold solder joints, moisture at plug connections and voltage spikes.

This crash data is also created in events that the driver does not notice. It remains in the memory until the repair at Airbag24 removes it.

Weak batteries and jump starts with high voltage can cause damage to the electronics. Corrosion on plugs disrupts the contact and can likewise contribute to the failure.

How can you tell that the 89170-02S00 is defective?

Typical signs are an airbag warning light that lights up permanently or intermittently, an error message in the instrument cluster, and a diagnostic tool with no connection to the control unit. In addition, the fault memory cannot be erased. In an emergency, the airbags and seatbelt pretensioners may then fail to trigger.

These signs appear in everyday life in different combinations. Even one of them is enough to prompt a check.

Act promptly, and have the system inspected as soon as one of these signs appears.

Which vehicles is the 89170-02S00 fitted in?

The control unit 89170-02S00 is fitted in these vehicles: Toyota Corolla E210 (2018-2022) and E210 Facelift (from 2022).

The list below shows the vehicles stored for this part number.

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

Compare the part number on the label with this page; this only confirms that you have the right unit. Also have the fault memory read out beforehand, as only this result shows whether the control unit is defective or a wire or plug 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 89170-02S00 work?

First, have the fault memory read out and enclose the log. Then disconnect the battery and remove the control unit. After that, create a repair order online and pack the unit well before you send it in.

Airbag24 checks the unit on the test bench, replaces defective components, erases the crash data and carries out a function test. Afterwards your own unit is returned to you.

Processing at Airbag24 usually takes 3–4 working days, meaning checking, repairing and testing alone.

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 89170-02S00 get to Airbag24?

You send the control unit 89170-02S00 as a parcel or book a UPS collection for an extra charge. Airbag24 sends it back to you by UPS after the repair.

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