Airbag control unit with part number 89170-BZ560

What does the airbag control unit 89170-BZ560 do?

For Toyota, the airbag control unit 89170-BZ560 coordinates the restraint system (SRS). From the signals of the crash sensors, it works out within milliseconds in an accident which airbags and seatbelt pretensioners are triggered.

The electronics check the system continuously. If they detect a fault, they report it via the airbag warning light in the instrument cluster.

After an accident, the unit stores crash data and is locked from then on.

Why does the control unit 89170-BZ560 fail?

The most common cause of a fault in the 89170-BZ560 is stored crash data, even if no airbag was triggered. Other causes include ageing electronic components, cold solder joints, moisture and corrosion, and voltage spikes.

The other causes can be summed up as follows:

• ageing electronic components
• cold solder joints
• moisture and corrosion at plug connections
• voltage spikes, for example from a weak battery or jump-starting

A normal diagnostic tool cannot erase crash data. Airbag24 deletes it during the repair.

How can you tell that the 89170-BZ560 is defective?

A defect in the 89170-BZ560 shows mainly through the airbag warning light, which stays on permanently or intermittently.

The following signs also occur:

• fault message in the instrument cluster
• no connection between the diagnostic tool and the control unit
• fault memory cannot be cleared

In an emergency, airbags and seatbelt pretensioners may then fail to trigger. The warning light is therefore the simplest first thing to check.

Which vehicles is the 89170-BZ560 fitted in?

The control unit 89170-BZ560 is fitted in these vehicles: Toyota Avanza F650 Facelift (2015-2023). This information helps you match your car.

These are the recorded vehicles:

• Toyota Avanza F650 Facelift (2015-2023)

First compare the part number on the label of the removed unit with this page. This only confirms that it is the right unit. You should also have the fault memory read, because only the result shows whether the control unit is defective or whether a plug or 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-BZ560 work?

First have the fault memory read and enclose the log. Then disconnect the battery. Only after that remove the control unit 89170-BZ560, then create a repair order online and pack the unit securely for sending.

Airbag24 then checks the unit on the test bench, repairs defective components, deletes the stored crash data and carries out a function test.

Airbag24 usually processes the unit within 3–4 working days. Your unit is then sent 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-BZ560 get to Airbag24?

You send the control unit 89170-BZ560 to Airbag24 as a parcel, or book a UPS collection for an extra charge. The return is made by UPS.

The printed repair order goes into the parcel, and the unit must be packed shockproof.