Airbag control unit with part number 89170-47B30

What does the airbag control unit 89170-47B30 do?

The airbag control unit 89170-47B30 is the central control unit of the restraint system (SRS) in Toyota. It evaluates the crash sensors and decides in an accident, within milliseconds, which airbags and seatbelt pretensioners are triggered.

In operation it monitors the entire system. It stores faults and reports them via the airbag warning light in the instrument cluster.

After an accident the control unit stores crash data and locks itself.

Why does the control unit 89170-47B30 fail?

At the 89170-47B30, stored crash data after an accident is the most common cause, even if no airbag has deployed. Other general causes are aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

• Crash data that cannot be erased with a normal diagnostic tool
• aged electronic components
• cold solder joints
• moisture and corrosion at plug connections
• voltage spikes, for example from a weak battery or a jump-start

Airbag24 erases crash data during the repair.

How can you tell that the 89170-47B30 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently. In addition there is a fault message, the diagnostic tool finds no connection to the control unit, and the fault memory cannot be cleared. With the 89170-47B30, these signs can appear together.

With these signs, airbags and seatbelt pretensioners may not deploy in an emergency. A prompt check of the system is therefore sensible.

Which vehicles is the 89170-47B30 fitted in?

The 89170-47B30 is fitted in these vehicles: Toyota Prius V XW60 (from 2022).

The assignment of this part number is listed below:

• Toyota Prius V XW60 (from 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 record 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, 89170-47860.

How does the repair of the 89170-47B30 work?

Have the fault memory read out and attach the log. Then disconnect the battery and remove the control unit 89170-47B30. Processing at Airbag24 usually takes 3–4 working days.

Afterwards you create a repair order online and send in the well-packed unit. Airbag24 checks it on the test bench, repairs defective components, erases stored crash data and carries out a function test. The unit is then returned to you.

This order of steps must 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 89170-47B30 get to Airbag24?

You can send the control unit 89170-47B30 as a parcel or have it collected by UPS for an extra charge. The return after the repair is made by UPS.

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