Airbag control unit with part number 89170-47880

What does the airbag control unit 89170-47880 do?

The airbag control unit 89170-47880 coordinates the restraint system (SRS) in vehicles of Toyota. It processes the signals from the crash sensors, decides within milliseconds in a crash on airbags and seatbelt pretensioners, and monitors all components continuously.

Reported faults appear on the airbag warning light. After a crash the unit stores crash data and locks itself; this lock is released only by the repair.

Why does the control unit 89170-47880 fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed. An ordinary diagnostic tool cannot remove it. Other causes are ageing components, moisture and corrosion at connectors, and voltage spikes.

After a crash the unit writes event data to its memory. Without an airbag having deployed, this entry nonetheless remains, and ordinary diagnostic equipment cannot clear it.

Electronic components age, solder joints can cause contact problems, and moisture attacks plug connections. Voltage spikes, for example from a weak battery or a jump-start, additionally stress the electronics.

How can you tell that the 89170-47880 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently. In addition there are fault messages in the instrument cluster, a diagnostic tool with no connection to the control unit, and a fault memory that cannot be cleared.

The warning light makes the defect visible as soon as the system detects it. If you overlook the warning light, airbags and seatbelt pretensioners may not deploy in an emergency.

A prompt check brings clarity here.

Which vehicles is the 89170-47880 fitted in?

The control unit 89170-47880 is fitted in vehicles of Toyota: Toyota Prius V XW60 (from 2022). Whether your vehicle is among them, check against the list on this page.

These vehicles are recorded for this part number:

• Toyota Prius V XW60 (from 2022)

Compare the part number on the label of the removed unit with this page. This only confirms that it is the right unit. Have the fault memory read out beforehand, because 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 89170-47030, 89170-47860.

How does the repair of the 89170-47880 work?

First have the fault memory read out and attach the log. Then disconnect the battery and remove the control unit. Next, create the repair order online and pack the unit well before sending it in. Processing at Airbag24 usually takes 3–4 working days.

At Airbag24 the unit is checked on the test bench, defective components are replaced, crash data is erased, and a functional test follows. Afterwards your own unit 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 89170-47880 get to Airbag24?

You send the control unit 89170-47880 as a parcel, or you book a UPS collection for an extra charge. After the repair, Airbag24 sends the unit back to you by UPS.

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