Airbag control unit with part number 89170-0DC80

What does the airbag control unit 89170-0DC80 do?

The airbag control unit 89170-0DC80 is the central control unit of the restraint system (SRS) for Toyota. It evaluates the signals from the crash sensors, determines in a crash within milliseconds which airbags and seatbelt pretensioners are triggered, and monitors the system continuously. After an accident it stores crash data and locks itself.

The device reports faults via the airbag warning light in the instrument cluster. Monitoring runs for as long as the vehicle has power.

In everyday use the work of the control unit remains hidden. It only becomes visible when it records a fault.

Why does the control unit 89170-0DC80 fail?

The most common cause is crash data stored after an accident, even when no airbag has triggered. A normal diagnostic tool cannot remove them. Other causes are aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes, for example from a weak battery or jump-starting.

Crash data arise because the device records an impact. This record stays in memory until it is deliberately erased, and it can document the fault memory even when nothing more can be seen on the vehicle.

The remaining causes tend to develop gradually. An ageing component or a damp contact can distort signals long before a complete failure occurs.

How can you tell that the 89170-0DC80 is defective?

A defect in the 89170-0DC80 shows up as the airbag warning light in the instrument cluster lighting up permanently or intermittently. A fault message in the instrument cluster, no connection to the diagnostic tool or a fault memory that cannot be cleared are added signs.

A diagnostic tool without a connection to the control unit does not automatically mean that the control unit is defective. The cause may just as well be in the wiring or the plug.

While the finding persists, airbags and seatbelt pretensioners may not trigger in an emergency. Please have the warning light checked.

Which vehicles is the 89170-0DC80 fitted in?

The control unit 89170-0DC80 is fitted in these vehicles: Toyota Yaris XP130 2nd Facelift (2017-2020), XP130 (2010-2014) and XP130 1st Facelift (2014-2017).

The overview lists the vehicles recorded for this part number:

• Toyota Yaris XP130 2nd Facelift (2017-2020)
• Toyota Yaris XP130 (2010-2014)
• Toyota Yaris XP130 1st Facelift (2014-2017)

Check the part number on the label of your removed unit against this page. This only tells you that you have the right unit, not whether it is defective. Also have the fault memory read out before you remove the control unit. Only this log shows whether the control unit itself is defective or whether a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 2310009950, 89170-0D300, 89170-0D320, 89170-0D590, 89170-0D600, 89170-0D620.

How does the repair of the 89170-0DC80 work?

First read out the fault memory and attach the log. Then disconnect the battery and only then remove the control unit. Afterwards create a repair order online and send in the well-packed unit.

Airbag24 checks the unit on the test bench, repairs 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 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 89170-0DC80 get to Airbag24?

You send the control unit 89170-0DC80 in as a parcel or 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 shockproof.