Airbag control unit with part number 89170-0R280

What does the airbag control unit 89170-0R280 do?

The airbag control unit 89170-0R280 is the central control unit of the restraint system (SRS) of Toyota. It checks the crash sensors, decides in a crash within milliseconds whether airbags and seatbelt pretensioners are triggered, and monitors the system continuously.

If the unit detects a fault, it displays it via the airbag warning light. In this way you can see the condition of the system without needing any tools.

After an accident, the control unit stores crash data and locks itself. This function is part of the system's design.

Why does the control unit 89170-0R280 fail?

The most common cause on the 89170-0R280 is stored crash data, even when no airbag has deployed. Ordinary diagnostic tools cannot erase them. Other causes include aged electronics, cold solder joints, moisture and corrosion, and voltage spikes.

• Aged electronic components
• Cold solder joints
• Moisture and corrosion at plug connections
• Voltage spikes, for example from a weak battery or jump-starting

The crash data remains stored in the unit until it is removed during the repair. It does not disrupt the function immediately, but it can place a long-term strain on it.

How can you tell that the 89170-0R280 is defective?

A defect on the 89170-0R280 shows up as the airbag warning light in the instrument cluster, as a fault message on the display, and as a diagnostic tool that cannot establish a connection. A fault memory that cannot be cleared is also a sign.

In an emergency, airbags and seatbelt pretensioners may possibly fail to trigger while the fault persists. Do not ignore the warning.

The warning light reports the fault itself, so you do not have to search for it first.

Which vehicles is the 89170-0R280 fitted in?

The airbag control unit 89170-0R280 is fitted in these vehicles: Toyota RAV4 XA50 (from 2018).

The list below shows the vehicles assigned to this part number.

• Toyota RAV4 XA50 (from 2018)

Compare the part number on the label of the removed unit with this page; this only ensures that you have the right unit. Read out the fault memory beforehand as well, as it shows whether the control unit or 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 89170-0R280 work?

Processing at Airbag24 usually takes 3–4 working days. Beforehand, you read out the fault memory, disconnect the battery and remove the control unit. Then create the repair order online and send the unit in well packed.

Airbag24 checks the unit on the test bench, repairs defective components, erases stored crash data and runs a functional test. Your own unit is then returned to you.

The sequence is mandatory for safety reasons. 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 89170-0R280 get to Airbag24?

You send the 89170-0R280 as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 sends it back by UPS.

Place the printed repair order in the parcel and pack the unit shockproof.