Airbag control unit with part number 89170-47670

What does the airbag control unit 89170-47670 do?

The airbag control unit 89170-47670 is the central control unit of the restraint system (SRS) in Toyota. It evaluates the crash sensors and decides within milliseconds in an accident which airbags and seatbelt pretensioners are triggered.

Outside an accident, the unit checks the system continuously. It stores any faults it finds and shows them via the airbag warning light in the instrument cluster.

After an accident, the control unit stores crash data and locks itself. A failure therefore affects the protective effect of the entire system.

Why does the control unit 89170-47670 fail?

The most common cause for the 89170-47670 is crash data stored after an accident, even if no airbag was triggered. Aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes are further causes.

Crash data remains stored until it is erased. A normal diagnostic tool cannot do this. Airbag24 erases the data during the repair.

Electronics age, and solder joints can go cold over time. Moisture and corrosion at plug connections disrupt the contact.

Voltage spikes arise, for example, from a weak battery or a jump start.

How can you tell that the 89170-47670 is defective?

A defect on the 89170-47670 becomes visible through the airbag warning light in the instrument cluster, which lights up permanently or intermittently. A fault message, no connection to the diagnostic tool, or a fault memory that cannot be erased also point to it.

The warning light shows the defect. In this state, the airbags and seatbelt pretensioners may fail to trigger in an emergency, which is why a prompt check is advisable.

Which vehicles is the 89170-47670 fitted in?

The 89170-47670 is fitted in these vehicles: Toyota Prius IV XW50 (2015-2018) and IV XW50 Facelift (2018-2022).

The assignment is set out in the following list:

• Toyota Prius IV XW50 (2015-2018)
• Toyota Prius IV XW50 Facelift (2018-2022)

Compare the part number on the label of the removed unit with this page. This only ensures that you have the right unit. Have the fault memory read out beforehand, because only this log shows whether the control unit is defective or a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 89170-47030, 89170-47611.

How does the repair of the 89170-47670 work?

For the 89170-47670, have the fault memory read out and then remove the unit after disconnecting the battery. Next, send it in with the repair order created online, well packed. Processing at Airbag24 usually takes 3–4 working days.

Airbag24 checks the unit on the test bench, repairs defective components, erases stored crash data and carries out a function test. The own unit then goes back to you.

This order is to be observed 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 89170-47670 get to Airbag24?

You send the control unit 89170-47670 as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 returns it to you by UPS.

Put the printed repair order in the parcel. The unit is packed shock-proof.