Airbag control unit with part number 89170-0R041

What does the airbag control unit 89170-0R041 do?

The airbag control unit 89170-0R041 is the central control unit of the restraint system (SRS) of Toyota. It evaluates the signals from the crash sensors, decides in a crash within fractions of a second whether airbags and seatbelt pretensioners are triggered, and monitors the system continuously.

The unit reports faults via the airbag warning light in the instrument cluster. After an accident it stores crash data and then locks itself.

Because the system only works reliably with a functioning control unit, irregularities in this component must be taken seriously.

Why does the control unit 89170-0R041 fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed; a normal diagnostic tool cannot erase it. Further causes are:

• aged electronic components
• cold solder joints
• moisture and corrosion at plug connections
• voltage spikes, for example from a weak battery or a jump start

Crash data is created when the sensors register an impact that is relevant to the unit. That the data exists says nothing about whether an airbag has deployed.

Airbag24 erases the crash data during the repair, because a normal diagnostic tool cannot do this.

How can you tell that the 89170-0R041 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, an error message appears in the instrument cluster, or the diagnostic tool receives no connection to the control unit. The fault memory that cannot be cleared is also noticeable. In that case airbags and seatbelt pretensioners may not trigger in an emergency.

• Airbag warning light lights up permanently or intermittently
• Error message in the instrument cluster
• Diagnostic tool receives no connection to the control unit
• Fault memory cannot be cleared

With each of these signs a check makes sense, because the protective effect may be impaired in an emergency.

Which vehicles is the 89170-0R041 fitted in?

The control unit 89170-0R041 is fitted in these vehicles: Toyota RAV4 XA30 (2006-2009) and XA30 Facelift (2009-2013). Your vehicle is identified by make and model.

These vehicles are known to us 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 it is the right unit. Before that, have the fault memory read out, because only the log 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, 89170-0R022, 89170-0R140, 89170-42201, 89170-42210, 89170-42420.

How does the repair of the 89170-0R041 work?

First read out the fault memory and include the log. Then disconnect the battery and only then remove the control unit. Afterwards create a repair order online and send the well-packed unit in. Processing at Airbag24 usually takes 3–4 working days.

The order serves safety: the battery is disconnected only after the read-out, and the control unit is removed only after that.

Airbag24 checks the unit on the test bench, repairs or replaces defective components, deletes the stored crash data and carries out a function test. Afterwards the 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 89170-0R041 get to Airbag24?

You send the control unit 89170-0R041 as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 sends it back to you by UPS.

Enclose the printed repair order with the parcel, and pack the unit shockproof.