Airbag control unit with part number 89170-47700

What does the airbag control unit 89170-47700 do?

The 89170-47700 is the airbag control unit for the restraint system (SRS) of Toyota. It processes the measurements from the crash sensors and decides within milliseconds in an accident on airbags and seatbelt pretensioners. After an accident it stores crash data and locks itself.

It monitors the system constantly and reports faults via the airbag warning light in the instrument cluster.

For the occupants, it is an invisible but decisive part of the vehicle.

Why does the control unit 89170-47700 fail?

On the 89170-47700, crash data from an accident can cause failure, even if no airbag was triggered. Crash data of this kind cannot be erased with an ordinary diagnostic tool.

Airbag24 erases the crash data during the repair. Other causes are:

• electronic components that lose performance over time
• cold solder joints
• moisture and corrosion on the plugs
• voltage spikes, for example from a weak battery or a jump start

How can you tell that the 89170-47700 is defective?

The airbag warning light in the instrument cluster indicates a defect on the 89170-47700 as soon as it stays on permanently or intermittently. Fault messages may also appear, the diagnostic tool may find no contact with the control unit, or the fault memory may not be clearable.

In an emergency, airbags and seatbelt pretensioners may fail to trigger, and that is exactly why these signs matter so much.

Even if the light comes on only at times, you should have the system checked.

Which vehicles is the 89170-47700 fitted in?

The 89170-47700 is intended for vehicles of Toyota, namely in these vehicles: Toyota Prius IV XW50 (2015-2018) and IV XW50 Facelift (2018-2022).

The following overview assigns the vehicles:

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

Read out the fault memory before you remove the unit from the vehicle. This tells you whether the control unit is defective or whether a cable and a plug are causing the displays. Compare the part number on the label with 89170-47700.

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

How does the repair of the 89170-47700 work?

You read out the fault memory before removal, and the log belongs to it. Then disconnect the battery, remove the control unit 89170-47700 and create a repair order online. Processing at Airbag24 usually takes 3–4 working days.

Airbag24 checks the unit, repairs the defective components, erases the crash data and carries out a function test before your own unit is returned 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 89170-47700 get to Airbag24?

There are two ways to reach Airbag24: you send the unit as a parcel, or you book a UPS collection for an extra charge. After the repair, the unit comes back to you by UPS.

The printed repair order is enclosed, and the unit must be packed shockproof.