Airbag control unit with part number 89170-42330

What does the airbag control unit 89170-42330 do?

The airbag control unit 89170-42330 is the central unit of the restraint system (SRS) in Toyota. It evaluates the crash sensors and decides in a crash which airbags and seatbelt pretensioners are triggered.

While driving, it monitors the system continuously. It shows faults via the airbag warning light in the instrument cluster.

After a crash, it stores crash data and locks itself.

Why does the control unit 89170-42330 fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed. Other causes include aged electronic components, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes.

A standard diagnostic tool leaves the crash data untouched. It therefore stays in the memory until it is removed during the repair.

Ageing, cold solder joints and corrosion affect the electronics over a longer period. Moisture acts particularly on the plug contacts.

Voltage spikes, for example from a weak battery or a jump start, additionally stress the unit.

How can you tell that the 89170-42330 is defective?

The airbag warning light in the instrument cluster stays on permanently or intermittently. In addition, there is an error message in the instrument cluster, a diagnostic tool without a connection to the control unit, and a fault memory that cannot be cleared.

In an emergency, airbags and seatbelt pretensioners may be unable to deploy. Therefore, have the warning checked promptly.

Which vehicles is the 89170-42330 fitted in?

The control unit 89170-42330 is fitted in these vehicles: Toyota RAV4 XA30 (2006-2009) and XA30 Facelift (2009-2013).

The list shows the vehicles recorded for this part number:

• Toyota RAV4 XA30 (2006-2009)
• Toyota RAV4 XA30 Facelift (2009-2013)

Comparing the part number on the label of the removed unit with this page only confirms that you have the right unit. Also have the fault memory read out; only the 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 150300-8850, 89170-0P010, 89170-0P020, 89170-0P030, 89170-0P040, 89170-0P050.

How does the repair of the 89170-42330 work?

First, have the fault memory read out and enclose the log. Then disconnect the battery and remove the control unit. Processing at Airbag24 usually takes 3–4 working days.

Next, create the repair order online and send the unit in. Airbag24 checks it on the test bench, repairs defective components, erases stored crash data and carries out a function test, after which the unit is sent 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 89170-42330 get to Airbag24?

You send the unit as a parcel, or you book a UPS collection for an extra charge. Airbag24 sends it back to you by UPS after the repair.

A shock-resistant box and the printed repair order in the parcel are the essentials.