Airbag control unit with part number 89170-0R160

What does the airbag control unit 89170-0R160 do?

The airbag control unit 89170-0R160 is the central control unit of the restraint system (SRS) for Toyota. It evaluates the signals from the crash sensors, decides in an accident within milliseconds which airbags and seatbelt pretensioners are triggered, and monitors the system permanently.

If the unit detects a fault, it reports it via the airbag warning light in the instrument cluster. After an accident it stores crash data and then locks itself.

The monitoring runs in the background. In everyday use you notice nothing of it as long as everything is in order.

Why does the control unit 89170-0R160 fail?

The most common cause in the 89170-0R160 lies in crash data stored after an accident, even if no airbag was triggered. Further causes are aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Crash data cannot be erased with a common diagnostic tool. Airbag24 erases it during the repair.

For the other causes, components age on the circuit board, solder joints can go cold, and moisture or corrosion on plugs disturbs the connection. Voltage spikes, for example from a weak battery or when starting with external power, can also harm the electronics.

How can you tell that the 89170-0R160 is defective?

A defect in the 89170-0R160 shows itself through an airbag warning light that stays on permanently or intermittently, an error message in the instrument cluster, a missing connection to the diagnostic tool, or a fault memory that cannot be cleared. In that case airbags and seatbelt pretensioners may not be triggered in an emergency.

• Airbag warning light in the instrument cluster stays on permanently or intermittently
• Error message in the instrument cluster
• The diagnostic tool finds no connection to the control unit
• The fault memory cannot be cleared

The warning light is the actual warning signal, because it shows the fault as soon as the system detects it.

Which vehicles is the 89170-0R160 fitted in?

The assignment by model belongs to the part number 89170-0R160. The control unit 89170-0R160 is fitted in these vehicles: Toyota RAV4 XA50 (from 2018).

The models at a glance:

• Toyota RAV4 XA50 (from 2018)

First compare the part number on the label of the removed unit with this page. That way you make sure you have the right unit in hand. Also have the fault memory read out before you dismantle anything, because only this result shows whether the control unit itself 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 89170-0R160 work?

First have the fault memory read out and enclose the log, then disconnect the battery and only afterwards remove the control unit 89170-0R160. Then create a repair order online and send in the well-packed unit.

Airbag24 checks the unit on the test bench, replaces defective components, deletes stored crash data and carries out a function test. Afterwards your own unit is returned to you.

Processing at Airbag24 usually takes 3–4 working days. This time covers only checking, repairing and testing in-house. 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 89170-0R160 get to Airbag24?

You send the control unit 89170-0R160 to Airbag24 as a parcel, or you book a UPS collection for an extra charge. After the repair, Airbag24 sends the unit back by UPS.

Pack the printed repair order into the parcel and pack the unit shock-proof.