Airbag control unit with part number 89170-0R430

What does the airbag control unit 89170-0R430 do?

The airbag control unit 89170-0R430 coordinates the restraint system (SRS) of Toyota. From the values of the crash sensors it works out within milliseconds whether airbags and seatbelt pretensioners must be triggered, and it monitors the system continuously. If it detects a fault, the fault appears on the airbag warning light.

Monitoring runs throughout the entire operating time of the vehicle, not only at the moment of an impact.

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

Why does the control unit 89170-0R430 fail?

Stored crash data from an accident is the most common cause, even if no airbag has deployed. A normal diagnostic tool does not erase it. Other causes are aged electronics, cold solder joints, moisture and corrosion on connectors, and voltage spikes.

The causes in detail:

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

How can you tell that the 89170-0R430 is defective?

The airbag warning light in the instrument cluster shows the defect when it lights up constantly or intermittently. Fault messages in the instrument cluster, a missing connection between the diagnostic tool and the control unit, and a fault memory that cannot be cleared are further signs.

The warning light is therefore the most important warning signal of the system. As long as it is active, airbags and seatbelt pretensioners may not trigger in an emergency.

Which vehicles is the 89170-0R430 fitted in?

The airbag control unit 89170-0R430 is fitted in these vehicles: Toyota RAV4 XA50 (from 2018). You can check it against your own vehicle before removal.

The following vehicles are listed for it:

• Toyota RAV4 XA50 (from 2018)

Comparing the label with this page only confirms that it is the correct unit. Have the fault memory read out beforehand. Only this log shows whether the control unit is defective or whether connectors or cables are the cause.

For the same vehicles, we also repair control units with the part numbers 150800-4431, 152100-0262, 152100-4560, 89170-42400, 89170-42870, 89170-42A60.

How does the repair of the 89170-0R430 work?

First have the fault memory read out and enclose the log. Then disconnect the battery and only then remove the 89170-0R430. Next create a repair order online and send the unit in, well packed.

Airbag24 tests the unit on the test bench, replaces defective components, erases stored crash data and carries out a functional test. Processing at Airbag24 usually takes 3–4 working days.

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 89170-0R430 get to Airbag24?

You send the control unit 89170-0R430 as a parcel, or you book a UPS collection for an extra charge. After the repair, Airbag24 returns it by UPS.

The repair order must be printed out and placed in the parcel. Pack the unit shock-proof so that it arrives undamaged.