Airbag control unit with part number 89170-02B10

What does the airbag control unit 89170-02B10 do?

The airbag control unit 89170-02B10 coordinates the restraint system (SRS) of Toyota. It evaluates the crash sensors and, in an accident, triggers the appropriate airbags and seatbelt pretensioners within milliseconds.

At the same time, the unit checks the system continuously. It indicates faults via the airbag warning light in the instrument cluster.

After an accident, the control unit stores crash data and locks itself. Only the repair lifts the lock.

Why does the control unit 89170-02B10 fail?

The most common cause for the 89170-02B10 is crash data stored after an accident, even if no airbag has deployed. Further causes are components that age, as well as moisture, corrosion and voltage spikes.

A standard diagnostic tool cannot remove this data. Airbag24 erases it during the repair.

The other causes concern the electronics themselves or their connections. Aged components, cold solder joints, moisture and corrosion at plug connections belong to these.

Voltage spikes occur, for example, with a weak battery or when jump-starting.

How can you tell that the 89170-02B10 is defective?

A defect in the 89170-02B10 shows itself through warning signals in the instrument cluster. The most important signs are:

• Airbag warning light that lights up permanently or intermittently
• Fault message in the instrument cluster
• Diagnostic tool without a connection to the control unit
• Fault memory that cannot be cleared

In an emergency, airbags and seatbelt pretensioners may possibly not deploy in the event of a defect. Take each of these signs seriously.

Which vehicles is the 89170-02B10 fitted in?

The airbag control unit 89170-02B10 is fitted in these vehicles: Toyota Corolla E140 (2006-2013).

Our assignment lists the following vehicles for this part number:

• Toyota Corolla E140 (2006-2013)

Compare the part number on the label of the removed unit with this page, so that you can be sure you have the correct unit in front of you. Also have the fault memory read out beforehand. Only this record shows whether the control unit or a connector or a cable is the cause.

For the same vehicles, we also repair control units with the part numbers 89170-0F032, 89170-12160.

How does the repair of the 89170-02B10 work?

First, read out the fault memory of the 89170-02B10 and enclose the log. Then disconnect the battery and only afterwards remove the control unit. Then create a repair order online and send the unit in well packed.

Airbag24 checks the unit on the test bench and replaces defective components. The stored crash data is deleted, followed by a function test. Afterwards, the unit goes back to you.

Processing at Airbag24 usually takes 3–4 working days, and this time applies only to checking, repairing and testing.

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 89170-02B10 get to Airbag24?

You send the 89170-02B10 in as a parcel or arrange a UPS collection for an extra charge. After the repair, the unit comes back to you by UPS.

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