Airbag control unit with part number 89170-0R360

What does the airbag control unit 89170-0R360 do?

The airbag control unit 89170-0R360 forms the central control of the restraint system (SRS) in Toyota. It checks the signals from the crash sensors and decides in an impact within milliseconds whether airbags and seatbelt pretensioners are triggered. After an accident, it stores crash data and locks itself.

During operation the unit continuously evaluates whether all components are working. If it detects a fault, it shows this via the airbag warning light in the instrument cluster.

The lock ends only with the repair.

Why does the control unit 89170-0R360 fail?

The most common cause is crash data stored after an accident, even if no airbag was triggered. A normal diagnostic tool cannot erase it. Aged electronic components, dry solder joints, moisture and corrosion at plug connections, and voltage spikes are also involved.

With crash data, the cause is not visible from outside, because nothing on the vehicle has to be visible. That is exactly why it is worth looking at the fault memory before anything is changed on the electronics.

The other causes concern the electronics themselves. Components age, dry solder joints can form, moisture and corrosion damage plug connections, and voltage spikes arise, for example, with a weak battery or a jump start.

How can you tell that the 89170-0R360 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently. In addition, a fault message appears in the instrument cluster, and the diagnostic tool finds no connection to the control unit.

The fault memory cannot then be cleared, even though the diagnostic tool is connected. This combination is a clear sign of a defect.

In an emergency, airbags and seatbelt pretensioners may not trigger. That is why you should have the system checked promptly.

Which vehicles is the 89170-0R360 fitted in?

The 89170-0R360 is fitted in these vehicles: Toyota RAV4 XA50 (from 2018).

The assignment to vehicles is shown in this list.

• Toyota RAV4 XA50 (from 2018)

Compare the part number of the removed unit with this page. That way you can be sure you have the correct unit. The comparison does not clarify the cause, however. For that, have the fault memory read out beforehand, because only this 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 89170-0R360 work?

For the repair of the 89170-0R360, you first read out the fault memory and enclose the log. Then you disconnect the battery, and only after that remove the control unit. Next, you create a repair order online and send in the well-packed unit.

At Airbag24 the unit is checked on the test bench. Defective components are replaced, stored crash data is erased and a function test is carried out. Afterwards the unit goes back to you.

Processing at Airbag24 typically 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 89170-0R360 get to Airbag24?

The control unit 89170-0R360 reaches Airbag24 either as a parcel or with a UPS collection that you book for an extra charge. After the repair, Airbag24 sends it back by UPS.

Print out the repair order and put it into the parcel, and pack the unit in a shock-resistant way.