Airbag control unit with part number 89170-0D370

What does the airbag control unit 89170-0D370 do?

The airbag control unit 89170-0D370 controls the restraint system at Toyota. It evaluates what the crash sensors record, determines in a collision whether airbags and seatbelt pretensioners fire, and monitors the entire system constantly.

It indicates irregularities via the airbag warning light in the instrument cluster. The decision in a collision is made within fractions of a second.

After an accident, the control unit stores crash data and then locks itself.

Why does the control unit 89170-0D370 fail?

The most common cause is crash data stored after an accident, even if no airbag has fired. A standard diagnostic tool cannot erase it. In addition, ageing components, cold solder joints, moisture and corrosion, as well as voltage spikes, play a role in the 89170-0D370.

The crash data remains in the unit, even if the car continues to drive normally after the event. Airbag24 removes it during the repair, so the other causes can then be checked in a targeted way.

Electronic components age over time, solder joints can have gone cold, and moisture attacks plug connections. A jump start or a weak battery causes voltage spikes that also stress the control unit.

How can you tell that the 89170-0D370 is defective?

A defect in the 89170-0D370 shows up as the airbag warning light, which stays on permanently or intermittently, or as a fault message in the instrument cluster. In addition, the diagnostic tool cannot communicate with the control unit, and the fault memory cannot be cleared.

Such signs mean that the restraint system is not working reliably. In an emergency, airbags and seatbelt pretensioners may not trigger, so take the warning seriously.

The warning light gives a clear indication of the fault, without you having to measure anything.

Which vehicles is the 89170-0D370 fitted in?

The control unit 89170-0D370 is fitted in these vehicles: Toyota Yaris XP90 (2005-2009) and XP90 Facelift (2009-2011).

The list of assigned vehicles follows here:

• 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 you have the correct unit.

Have the fault memory read out beforehand. Only this finding 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 212986-105, 212986-110, 220749-101, 89170-0D170, 89170-0D230, 89170-0D440.

How does the repair of the 89170-0D370 work?

First, have the fault memory read out and enclose the log. Then disconnect the battery and only then remove the control unit. Next, create a repair order online and send the unit well packed.

At Airbag24, the unit is examined on the test bench, defective components are replaced, crash data is erased and a function test is carried out. Processing 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 89170-0D370 get to Airbag24?

You send the control unit 89170-0D370 as a parcel or book a UPS collection for an extra charge. Airbag24 sends the repaired unit back by UPS.

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