Airbag control unit with part number 89170-0D280

What does the airbag control unit 89170-0D280 do?

The airbag control unit 89170-0D280 coordinates the restraint system (SRS) of Toyota. It checks the signals from the crash sensors and determines in an accident which airbags and seatbelt pretensioners are triggered. After an accident it stores crash data and locks itself.

Monitoring runs in the background throughout the entire journey. If anything unusual occurs, the unit reports it via the airbag warning light in the instrument cluster.

Why does the control unit 89170-0D280 fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed. Other causes are aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

A normal diagnostic tool cannot erase this data, and that is why the fault does not resolve itself without intervention.

The remaining causes lie in the electronics and at the contacts. Older solder joints can go cold, moisture and corrosion disrupt the connections, and voltage spikes stress the components.

How can you tell that the 89170-0D280 is defective?

A defect in the 89170-0D280 can be recognised by the airbag warning light in the instrument cluster. In addition, there are error messages and problems when reading out the fault memory.

• Warning light on permanently
• Warning light on intermittently
• Error message in the instrument cluster
• Diagnostic tool cannot reach the control unit
• Fault memory remains after the attempt to erase it

Airbags and seatbelt pretensioners may then fail to deploy in an emergency. If you notice such signs, have the system checked promptly.

Which vehicles is the 89170-0D280 fitted in?

The control unit 89170-0D280 is used in these vehicles: Toyota Yaris XP90 (2005-2009) and XP90 Facelift (2009-2011).

The models concerned are as follows:

• Toyota Yaris XP90 (2005-2009)
• Toyota Yaris XP90 Facelift (2009-2011)

Comparing the part number on the label of the removed unit with this page only confirms that it is the right unit. Whether the control unit is defective or a plug or cable is the cause is established only by the fault memory, which you have read out beforehand.

For the same vehicles, we also repair control units with the part numbers 212986-105, 212986-110, 220749-101, 89170-0D160, 89170-0D170, 89170-0D180.

How does the repair of the 89170-0D280 work?

First have the fault memory read out; the log goes into the parcel. Then disconnect the battery, and only then remove control unit 89170-0D280. Processing at Airbag24 usually takes 3–4 working days, and that covers only checking, repairing and testing.

Next, you create a repair order online and send the well-packed unit. Airbag24 checks the unit on the test bench, replaces defective components, erases stored crash data and tests the function. Your own unit then 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 89170-0D280 get to Airbag24?

Control unit 89170-0D280 reaches Airbag24 as a parcel, or you book a UPS collection for an extra charge. The return shipment after the repair is made by UPS.

Packed shockproof, the unit goes into the carton together with the printed repair order.