Airbag control unit with part number 89170-42350

What does the airbag control unit 89170-42350 do?

The airbag control unit 89170-42350 controls the restraint system (SRS) of Toyota. It evaluates the crash sensors, decides within milliseconds in a crash which airbags and seatbelt pretensioners are triggered, and monitors the system continuously. It reports faults via the airbag warning light.

Monitoring takes place throughout operation. If the unit detects a fault, it reports this in the instrument cluster.

After a crash, the control unit stores crash data and locks itself. In this way, it stays traceable what the system registered during the impact.

Why does the control unit 89170-42350 fail?

The most common cause is stored crash data after a crash, even if no airbag has deployed. Airbag24 erases this data during the repair, because a normal diagnostic tool does not remove it. Further causes are aged electronic components, cold solder joints, moisture and corrosion, and voltage spikes.

Stored crash data leaves the system in a state that a diagnostic tool alone cannot fix. The other causes are technical in nature:

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

How can you tell that the 89170-42350 is defective?

A defect shows up as the airbag warning light staying on permanently or intermittently, as a fault message in the instrument cluster, as a missing connection to the diagnostic tool, or as a fault memory that cannot be cleared. Airbags and seatbelt pretensioners may then fail to trigger in an emergency.

Watch especially for these signs:

• The airbag warning light in the instrument cluster stays on permanently or intermittently.
• A fault message appears in the instrument cluster.
• The diagnostic tool gets no connection to the control unit.
• The fault memory cannot be cleared.

Which vehicles is the 89170-42350 fitted in?

The control unit 89170-42350 is fitted in these vehicles: Toyota RAV4 XA30 (2006-2009) and XA30 Facelift (2009-2013).

The following list shows the vehicles assigned to this part number.

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

Compare the part number on the label of the removed unit with this page, so that you can be sure you have the right unit in front of you. Also have the fault memory read out before removal, because only this result 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 150300-8850, 89170-0P010, 89170-0P020, 89170-0P030, 89170-0P040, 89170-0P050.

How does the repair of the 89170-42350 work?

Processing at Airbag24 usually takes 3–4 working days. Beforehand, have the fault memory read out and the log attached, disconnect the battery, and only then remove the control unit.

Then create a repair order online and send the unit well packed. Airbag24 checks it on the test bench, repairs defective components, erases stored crash data and carries out a function test. Afterwards, your own unit comes 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 89170-42350 get to Airbag24?

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

Place the printed repair order in the parcel and pack the unit to withstand impact.