Airbag control unit with part number 89170-0C180

What does the airbag control unit 89170-0C180 do?

The airbag control unit 89170-0C180 is the central control unit of the restraint system (SRS) for Toyota. It evaluates the crash sensors and, in an accident, decides within milliseconds which airbags and seatbelt pretensioners are triggered.

It monitors the system continuously. It reports faults via the airbag warning light in the instrument cluster.

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

Why does the control unit 89170-0C180 fail?

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

Crash data cannot be erased with a standard diagnostic tool. Airbag24 erases it during the repair.

• Aged electronic components
• Cold solder joints
• Moisture and corrosion at plug connections
• Voltage spikes, for example from a weak battery or jump-starting

How can you tell that the 89170-0C180 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently. An error message also appears in the instrument cluster, the diagnostic tool cannot connect to the control unit, or the fault memory cannot be cleared.

In this case, the airbags and seatbelt pretensioners may fail to trigger in an emergency. The light indicates a finding that you need to follow up promptly.

Which vehicles is the 89170-0C180 fitted in?

The control unit 89170-0C180 is fitted in this vehicle: Toyota Tundra K20 (2000-2006).

The assignment is shown in this overview:

• Toyota Tundra K20 (2000-2006)

Compare the part number on the label of the removed unit with this page. This only ensures that you have the correct unit. Have the fault memory read out beforehand, because only this 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 89170-0C050, 89170-0C060.

How does the repair of the 89170-0C180 work?

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

Airbag24 tests the control unit on the test bench, repairs defective components, erases the stored crash data and carries out a function test. The unit is then 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 89170-0C180 get to Airbag24?

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

Put the printed repair order into the parcel and pack the control unit shock-resistant.