Airbag control unit with part number 89170-BZ260

What does the airbag control unit 89170-BZ260 do?

The control unit 89170-BZ260 is the central unit of the restraint system (SRS) for Toyota. It evaluates the crash sensors, determines in a crash which airbags and seatbelt pretensioners fire, and monitors the system throughout.

If it detects a fault, it reports this via the airbag warning light. After a crash, it records crash data and locks itself.

Because the unit works constantly while driving, its function is decisive for the safety of the occupants.

Why does the control unit 89170-BZ260 fail?

The most common cause for 89170-BZ260 is crash data stored after an accident, even if no airbag has deployed. Aged electronics, moisture and corrosion at plug connections and voltage spikes are further causes.

A normal diagnostic tool cannot remove this crash data. Airbag24 removes it during the repair.

Cold solder joints play a role as well, as do electronic components that age over time.

Finally, voltage spikes can load the unit, for example when the battery is weak or a jump-start is connected.

How can you tell that the 89170-BZ260 is defective?

A defect in the 89170-BZ260 shows itself through the airbag warning light in the instrument cluster. In addition, a fault message appears, and the diagnostic tool receives no connection to the control unit.

• The airbag warning light comes on permanently or intermittently
• A fault message appears in the instrument cluster
• The diagnostic tool finds no connection to the control unit
• The fault memory cannot be cleared

As long as the fault persists, airbags and seatbelt pretensioners may fail to deploy in an emergency. Therefore, take the vehicle for a check promptly.

Which vehicles is the 89170-BZ260 fitted in?

The control unit 89170-BZ260 is fitted in these vehicles: Toyota Avanza F650 (2011-2015). This is a first indication to go by before you remove the unit.

The vehicles are listed here:

• Toyota Avanza F650 (2011-2015)

Two steps help. First compare the part number on the label with this page, so that you know for certain that it is the correct unit. Then have the fault memory read out, because only this shows whether the control unit itself is defective or whether a plug or a cable is the cause.

For the same vehicles, we also repair control units with the part numbers 17952812-928112, 17952815-928143, 89170-BZ440.

How does the repair of the 89170-BZ260 work?

First have the fault memory read out and enclose the log. Then disconnect the battery and remove the control unit 89170-BZ260. Next, create a repair order online and pack the unit carefully.

You then send the unit in. Airbag24 checks it on the test bench, replaces defective components, erases the stored crash data and carries out a function test.

Processing at Airbag24 usually takes 3–4 working days. After that, your unit is returned 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-BZ260 get to Airbag24?

You send the control unit 89170-BZ260 as a parcel, or you book a UPS collection for an extra charge. After the repair, Airbag24 returns it by UPS.

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