Airbag control unit with part number 89170-47380

What does the airbag control unit 89170-47380 do?

The airbag control unit 89170-47380 is the central control unit of the SRS restraint system for Toyota. It evaluates the crash sensors, decides in the event of an accident which airbags and seatbelt pretensioners are triggered, and monitors the system continuously. It shows faults via the airbag warning light.

The monitoring runs in the background while you drive.

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

Why does the control unit 89170-47380 fail?

The most common cause with the 89170-47380 after an accident is stored crash data, even if no airbag was triggered. Aged components, cold solder joints, moisture, corrosion and voltage spikes are added.

Crash data cannot be erased with a normal diagnostic tool. Airbag24 erases it during the repair.

Aged components and cold solder joints affect the electronics. Moisture and corrosion attack the plug connections.

Voltage spikes occur, for example, with a weak battery or when jump-starting.

How can you tell that the 89170-47380 is defective?

A defect in the 89170-47380 shows itself through the airbag warning light in the instrument cluster and a fault message in the instrument cluster.

In addition, these signs occur:

• the diagnostic tool gets no connection to the control unit
• the fault memory cannot be cleared

In an emergency, airbags and seatbelt pretensioners may then fail to trigger.

Which vehicles is the 89170-47380 fitted in?

The control unit 89170-47380 is fitted in these vehicles: Toyota Prius II XW20 (2003-2009).

The following overview shows the vehicle for which this part number is stored.

• Toyota Prius II XW20 (2003-2009)

Compare the part number on the label of the removed unit with this page. That only confirms that you have the correct unit. Also have the fault memory read out beforehand, because only the result shows whether the control unit is defective or a plug or cable is the cause.

How does the repair of the 89170-47380 work?

First have the fault memory read out and attach the log. Then disconnect the battery, and only after that remove the 89170-47380. Then create a repair order online and send the unit in. 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 runs a function test. Processing there usually takes 3–4 working days. Afterwards the unit returns 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 89170-47380 get to Airbag24?

You ship the 89170-47380 as a parcel, or you arrange a UPS collection for an extra charge. After the repair, it is returned to you by UPS.

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