Airbag control unit with part number 89170-0DB90

What does the airbag control unit 89170-0DB90 do?

The airbag control unit 89170-0DB90 controls the SRS system in Toyota. It checks the crash sensors and, in the event of an accident, decides within milliseconds which airbags and seatbelt pretensioners are triggered.

During operation the control unit monitors all components of the system. It indicates faults via the airbag warning light in the instrument cluster.

After an accident it stores crash data and locks itself.

Why does the control unit 89170-0DB90 fail?

Stored crash data from an accident is the most common cause on the 89170-0DB90, even if no airbag has deployed. Ageing components, moisture and corrosion at plug connections, cold solder joints and voltage spikes are also possible causes.

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

The other causes relate to the ageing of the electronics, to connections that are damp or corroded, and to voltage spikes. A weak battery or a jump start can trigger voltage spikes.

How can you tell that the 89170-0DB90 is defective?

The airbag warning light in the instrument cluster indicates a fault on the 89170-0DB90 by staying on permanently or intermittently. In addition, an error message may appear, the diagnostic tool may not connect to the control unit, or the fault memory remains.

The light is a clear sign, because the control unit reports the fault itself. Paying attention to the light is therefore the first step.

As long as the fault persists, airbags and seatbelt pretensioners may fail to deploy in an accident. This risk is reason enough not to ignore the warning.

Which vehicles is the 89170-0DB90 fitted in?

Toyota does not use this control unit in every model range. The 89170-0DB90 is fitted in these vehicles: Toyota Yaris XP130 2nd Facelift (2017-2020), XP130 (2010-2014) and XP130 1st Facelift (2014-2017).

The following vehicles are associated with this part number:

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

Compare the part number on the label of the removed unit with this page so that you have the right unit in front of you. This does not reveal the defect itself. That is only clarified by the fault memory, which you should have read out beforehand, because it shows whether the control unit or 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 89170-0DB90 work?

Have the fault memory of the 89170-0DB90 read out first, and enclose the log. Only once the battery is disconnected do you remove the control unit.

Then create a repair order online and send the unit in, well packed.

At Airbag24 the control unit is tested on the test bench, defective components are replaced and stored crash data is deleted. After a function test the unit is returned to you. Processing at Airbag24 usually takes 3–4 working days.

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 89170-0DB90 get to Airbag24?

You send the 89170-0DB90 as a parcel, or you book a UPS collection for an extra charge. The return to you is made by UPS after the repair.

A printed repair order belongs in the consignment. Pack the control unit so that it withstands knocks.