Airbag control unit with part number 89170-0R380

What does the airbag control unit 89170-0R380 do?

Within the restraint system (SRS) of Toyota, the airbag control unit 89170-0R380 handles the evaluation. It reads the crash sensors, determines within milliseconds in an impact which airbags and seatbelt pretensioners are to be triggered, and checks the system continuously.

The unit shows faults via the airbag warning light, which is located in the instrument cluster. That way the driver learns that something in the system is wrong.

After an accident it stores crash data and locks itself. The lock is only lifted by the repair.

Why does the control unit 89170-0R380 fail?

The most common cause for the 89170-0R380 is crash data stored after an accident, even if no airbag was triggered. Alongside this come ageing components, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes such as those from a weak battery or a jump start.

The crash data stays in the memory, even though a normal diagnostic tool cannot erase it. Airbag24 removes it during the repair.

Ageing electronic components and cold solder joints can also lead to a failure without an accident being the cause.

Moisture and corrosion at plug connections disrupt the contact, and voltage spikes stress the electronics further.

How can you tell that the 89170-0R380 is defective?

A defect on the 89170-0R380 shows up as the airbag warning light, as a fault message in the instrument cluster, as a missing connection to the diagnostic tool, or as a fault memory that cannot be cleared.

The airbag warning light may light up permanently or only come on intermittently. Either way it indicates that the control unit has detected a fault.

In an emergency, airbags and seatbelt pretensioners may therefore possibly not deploy. A finding like this must be taken seriously.

Which vehicles is the 89170-0R380 fitted in?

The 89170-0R380 is fitted in these vehicles: Toyota RAV4 XA50 (from 2018).

The vehicles for which this control unit is intended are listed here:

• Toyota RAV4 XA50 (from 2018)

Compare the part number on the label of the removed unit with this page. This only establishes that you have the right unit in front of you. Have the fault memory read out beforehand, as 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 150800-4431, 152100-0262, 152100-4560, 89170-42400, 89170-42870, 89170-42A60.

How does the repair of the 89170-0R380 work?

First have the fault memory read out and attach the log. Then disconnect the battery, remove the 89170-0R380 and create a repair order online, before you send in the well-packed unit.

At Airbag24 the control unit is checked on the test bench, defective components are replaced, the stored crash data is cleared and a function test is carried out. Processing usually takes 3–4 working days, and this period covers only checking, repairing and testing at Airbag24.

The 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 89170-0R380 get to Airbag24?

The 89170-0R380 is sent in as a parcel, or you book a UPS collection for an extra charge. Airbag24 sends the unit back by UPS after the repair.

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