Airbag control unit with part number 89170-42341

What does the airbag control unit 89170-42341 do?

The airbag control unit 89170-42341 controls the restraint system (SRS) of Toyota. It processes the signals from the crash sensors, selects the appropriate airbags and seatbelt pretensioners in the event of an accident within milliseconds, and monitors the entire system. It reports faults via the airbag warning light.

The system consists of sensors, triggering elements and the control unit, which connects everything. Without this central unit, the signals would not be evaluated.

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

Why does the control unit 89170-42341 fail?

The most common cause is crash data stored after an accident, even without a triggered airbag; a normal diagnostic tool cannot erase it. Other causes include aged components, cold solder joints, moisture and corrosion, and voltage spikes.

Crash data is created in the unit as soon as it records an accident. The records remain in memory until Airbag24 removes them during the repair.

Aged components gradually wear out. Cold solder joints can interrupt a connection only intermittently, which makes the fault hard to pin down.

Moisture and corrosion attack plug connections, and voltage spikes arise, for example, when a jump start is connected or with a weak battery.

How can you tell that the 89170-42341 is defective?

A fault becomes visible when the airbag warning light in the instrument cluster stays on permanently or intermittently. A fault message in the instrument cluster, a missing connection between the diagnostic tool and the control unit, or a fault memory that cannot be cleared are also typical signs.

As long as the light is on, airbags and seatbelt pretensioners may not trigger in an accident.

A specialist workshop or a diagnostic tool can read out the fault memory and assign the entry.

Which vehicles is the 89170-42341 fitted in?

The control unit 89170-42341 is fitted in these vehicles: Toyota RAV4 XA30 (2006-2009) and XA30 Facelift (2009-2013). Model and year of construction in the vehicle registration document show whether your car is affected.

The vehicles are listed here:

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

You should compare the part number on the label of the removed unit with this page, because that only confirms that it is the correct unit. The cause is not clarified by this comparison. Have the fault memory read out beforehand; 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 89170-42341 work?

First have the fault memory read out and the log attached, then disconnect the battery and only then remove the control unit. Afterwards create a repair order online and send in the well-packed unit. Processing at Airbag24, i.e. inspection, repair and function test, usually takes 3–4 working days.

Airbag24 checks the control unit on the test bench, repairs the defective components and erases stored crash data. A function test follows before your own unit goes 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 89170-42341 get to Airbag24?

The unit goes to Airbag24 as a parcel, or you book a UPS collection for an extra charge. The return after the repair is also made by UPS.

The printed repair order lies in the parcel, and the unit is packed shockproof.