Airbag control unit with part number 89170-0DB80

What does the airbag control unit 89170-0DB80 do?

For Toyota, the airbag control unit 89170-0DB80 processes the signals from the crash sensors and, in an accident, triggers the appropriate airbags and seatbelt pretensioners within milliseconds. It monitors the entire system and, after an accident, stores crash data, after which it locks itself.

The unit works in the background and reports faults via the airbag warning light in the instrument cluster.

Seatbelt pretensioners are controlled by the same control unit, so a fault can affect not only the airbags but also the seatbelt pretensioners.

Why does the control unit 89170-0DB80 fail?

The most common reason for a failure of the 89170-0DB80 is crash data stored after an accident, whether or not an airbag fired. Further causes are aging electronics, moisture and corrosion, and voltage spikes.

• Aging of the electronic components
• cold solder joints on the circuit board
• moisture and corrosion on connectors
• voltage spikes from a weak battery or jump-starting

Crash data cannot be removed with an ordinary diagnostic tool.

The actual cause in an individual case can only be narrowed down on the test bench.

How can you tell that the 89170-0DB80 is defective?

A defect in the 89170-0DB80 shows up on the airbag warning light in the instrument cluster, which lights up permanently or intermittently, and in a fault message in the instrument cluster. In addition, the diagnostic tool cannot establish a connection to the control unit, and the fault memory cannot be erased.

The light and the fault message are the visible signs for the driver. Anyone who notices a permanent or intermittent indication should have the system checked.

As long as the fault persists, airbags and seatbelt pretensioners may not be able to deploy in an emergency.

Which vehicles is the 89170-0DB80 fitted in?

Only the read-out fault memory shows which cause applies. The 89170-0DB80 is fitted in these vehicles: Toyota Yaris XP130 2nd Facelift (2017-2020), XP130 (2010-2014) and XP130 1st Facelift (2014-2017).

The models with this control unit:

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

First, compare the part number on the label of the removed unit with this page; this only ensures that you have the right unit. Second, have the fault memory read out in advance, because only the log 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 2310009950, 89170-0D300, 89170-0D320, 89170-0D590, 89170-0D600, 89170-0D620.

How does the repair of the 89170-0DB80 work?

First have the fault memory read out and enclose the log, then disconnect the battery. Only then remove the control unit 89170-0DB80 and create a repair order online before sending it in securely packed. Inspection, repair and function test at Airbag24 usually take 3–4 working days.

In the Airbag24 test lab, the unit is checked, defective components are repaired, the crash data is erased and a function test is carried out. After that, your own unit is sent back.

The order at the start is mandatory for safety reasons.

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 89170-0DB80 get to Airbag24?

You send the control unit 89170-0DB80 as a parcel, or you book a UPS collection for an extra charge. After the repair, Airbag24 sends it back to you by UPS.

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