Airbag control unit with part number 89170-02640

What does the airbag control unit 89170-02640 do?

The airbag control unit 89170-02640 is the central control unit of the restraint system (SRS) of Toyota. It processes the signals from the crash sensors, decides within a few milliseconds in a crash whether airbags and seatbelt pretensioners are triggered, and monitors the system continuously. It reports faults via the airbag warning light.

After an accident the unit stores crash data and locks itself. The protective effect of the system depends on this control unit working reliably.

Why does the control unit 89170-02640 fail?

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

Airbag24 erases the crash data during the repair of the control unit 89170-02640. No separate step is needed on your part.

• Aged electronic components in the unit.
• Cold solder joints that can interrupt the contact.
• Moisture and corrosion at plug connections.
• Voltage spikes, for example from a weak battery or a jump start.

Which cause is actually present is only shown by the examination of the unit.

How can you tell that the 89170-02640 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently when a fault has been detected in the 89170-02640.

Fault messages in the instrument cluster also appear. If the diagnostic tool cannot connect to the control unit, or the fault memory cannot be erased, that is also a sign of a defect.

Airbags and seatbelt pretensioners may then fail to trigger in an emergency. A lit warning light must therefore be taken seriously.

Which vehicles is the 89170-02640 fitted in?

The 89170-02640 is fitted in these vehicles: Toyota Corolla E140 (2006-2013) and E150 (2006-2013).

These vehicles are listed individually here:

• Toyota Corolla E140 (2006-2013)
• Toyota Corolla E150 (2006-2013)

On the one hand: compare the part number on the label of the removed unit with this page. This only confirms that it is the correct unit. On the other hand: have the fault memory read out beforehand, because only this result shows whether the control unit is defective or whether a connector or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 89170-02810, 89170-02830, 89170-02840, 89170-02860, 89170-02870, 89170-02A90.

How does the repair of the 89170-02640 work?

First have the fault memory read out and include the log in the package. Then disconnect the battery and only then remove the control unit 89170-02640. Next, create a repair order online and pack the unit well.

Airbag24 checks the unit on the test bench, replaces defective components, erases stored crash data and carries out a function test. Processing at Airbag24 usually takes 3–4 working days.

The unit then returns 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 89170-02640 get to Airbag24?

The control unit 89170-02640 goes to Airbag24 as a parcel, or alternatively with a UPS collection booked for an extra charge. Airbag24 handles the return by UPS.

Pack the unit shock-proof and place the printed repair order in the parcel.