Airbag control unit with part number 89170-0D740

What does the airbag control unit 89170-0D740 do?

The airbag control unit 89170-0D740 is the control centre of the restraint system (SRS) for Toyota. It evaluates the crash sensors, decides within milliseconds in an accident whether airbags and seatbelt pretensioners are triggered, and monitors the system continuously.

It indicates faults via the airbag warning light in the instrument cluster. After an accident it stores crash data and locks itself. The lock is lifted only by the repair.

Why does the control unit 89170-0D740 fail?

Crash data from an accident is the most common cause, even when no airbag has deployed. An ordinary diagnostic tool cannot delete it. Further causes are ageing electronics, cold solder joints, moisture or corrosion on plug connectors, and voltage spikes.

The further causes at a glance:

• Wear on electronic components
• Solder joints with cold faults
• Wet conditions and salt on plugs
• Voltage spikes from a weak battery or jump-starting

Airbag24 deletes the crash data during the repair. Which of the other causes applies in an individual case only becomes clear during the test.

How can you tell that the 89170-0D740 is defective?

A defective control unit is recognised by the airbag warning light in the instrument cluster, which lights up permanently or intermittently. The instrument cluster also shows an error message, the diagnostic tool finds no connection to the control unit, and the fault memory cannot be cleared.

These signs mean that airbags and seatbelt pretensioners may not deploy in an emergency. If you notice any of them, look into the cause promptly.

Which vehicles is the 89170-0D740 fitted in?

The control unit 89170-0D740 is found in these vehicles: Toyota Yaris XP130 1st Facelift (2014-2017).

The following list shows the vehicles:

• Toyota Yaris XP130 1st Facelift (2014-2017)

Comparing the part number on the label of the removed unit with this page only confirms that you have the right unit. You should have the fault memory read out in advance, because only this 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 2310009950, 89170-0D010, 89170-52350, 891700D610.

How does the repair of the 89170-0D740 work?

First have the fault memory read out and enclose the log, then disconnect the battery. Then remove the control unit, and then create the repair order online.

Once the unit has arrived, Airbag24 checks it on the test bench, replaces defective components, deletes the crash data and carries out a function test. Processing usually takes 3–4 working days.

You then receive your own unit back. 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 89170-0D740 get to Airbag24?

You send the control unit as a parcel, or book a UPS collection for an extra charge. After the repair the unit returns to you by UPS.

The unit must be packed shock-proof, and the printed repair order goes inside.