Airbag control unit with part number 89170-BZA30

What does the airbag control unit 89170-BZA30 do?

The airbag control unit 89170-BZA30 coordinates the restraint system (SRS) in Toyota. It queries the crash sensors, decides in an accident whether the airbags and seatbelt pretensioners are triggered, and monitors the entire system.

Faults appear via the airbag warning light. After an accident, the unit stores crash data and locks itself.

Monitoring runs in the background, on every journey, without you having to do anything.

Why does the control unit 89170-BZA30 fail?

With the 89170-BZA30, the most common cause is stored crash data after an accident, even without a triggered airbag. Other causes are aged components, solder joints, moisture and voltage spikes.

Crash data cannot be erased with a normal diagnostic tool. Airbag24 removes it during the repair.

• aged electronic components
• cold solder joints
• moisture and corrosion at plug connections
• voltage spikes from a weak battery or a jump start

How can you tell that the 89170-BZA30 is defective?

A defect on the 89170-BZA30 shows itself through the airbag warning light, which lights up permanently or intermittently. In addition, fault messages appear, the diagnostic tool has no connection, or a fault memory cannot be cleared.

The airbag warning light in the instrument cluster is the most important warning sign. It shows that the system has detected a fault.

If the defect persists, airbags and seatbelt pretensioners may fail to trigger in an emergency. Therefore have the vehicle checked promptly.

Which vehicles is the 89170-BZA30 fitted in?

The control unit 89170-BZA30 is fitted in these vehicles: Toyota Avanza F650 Facelift (2015-2023). This list gives you an initial orientation before you remove the unit.

The assigned vehicle:

• Toyota Avanza F650 Facelift (2015-2023)

Compare the part number on the label with this page. This ensures that it is the right unit. Have the fault memory read out beforehand as well, because the result shows whether the control unit 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-BZA30 work?

First have the fault memory read out and enclose the log. Then disconnect the battery and only then remove the control unit 89170-BZA30. Next, create a repair order online and send the unit in.

Pack the unit well so that it arrives undamaged. 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.

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-BZA30 get to Airbag24?

You can send the control unit 89170-BZA30 in as a parcel, or book a UPS collection for an extra charge. After the repair, Airbag24 returns it to you by UPS.

Enclose the printed repair order with the parcel and pack the unit shockproof.