Airbag control unit with part number 89170-0C582

What does the airbag control unit 89170-0C582 do?

The airbag control unit 89170-0C582 manages the restraint system (SRS) of Toyota. It records the impulses from the crash sensors, decides on airbags and seatbelt pretensioners in an accident, and monitors itself continuously. After an accident it stores crash data and locks itself.

This decision is made within a few milliseconds. The control runs in the background without you having to operate anything.

In normal operation the unit is invisible; the warning light stays off as long as there is no fault.

Why does the control unit 89170-0C582 fail?

Main cause: crash data that remains in the unit after an accident, even without an airbag triggering; standard diagnostic tools do not remove it. Other causes lie in the electronics themselves, in the plugs and in the power supply.

The crash data stays in the unit until a repair removes it.

The other causes include:

• ageing of the electronics
• solder joints that give way over time
• moisture causing corrosion at plugs
• current spikes when starting or with a weak battery

How can you tell that the 89170-0C582 is defective?

The airbag warning light in the instrument cluster indicates a fault if it lights up continuously or at intervals. In addition, fault messages appear in the instrument cluster, the diagnostic tool cannot reach the control unit, or the fault memory cannot be erased. Then airbags and seatbelt pretensioners may not trigger in an emergency.

You should not disregard such findings, because the light reflects the condition of the system.

Have the system examined promptly so that the cause becomes clear.

Which vehicles is the 89170-0C582 fitted in?

The control unit 89170-0C582 is fitted in these vehicles: Toyota Tundra K30 (2007-2021).

This overview shows which vehicles belong to it:

• Toyota Tundra K30 (2007-2021)

First compare the part number on the label of your removed unit with this page; that tells you that it is the correct unit. Have the fault memory read out before removal. It will then show whether the control unit itself is the cause or whether a plug or cable is.

For the same vehicles, we also repair control units with the part numbers 89170-0C440, 89170-0C450, 89170-0C451, 89170-0C452, 89170-0C490, 89170-0C581.

How does the repair of the 89170-0C582 work?

First read out the fault memory and attach the log. Then disconnect the battery, remove the control unit and create the repair order online. Then send in the well-packed unit, and Airbag24 checks it on the test bench.

Airbag24 repairs defective components, erases stored crash data and carries out a function test; processing usually takes 3–4 working days.

Your unit then 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 89170-0C582 get to Airbag24?

You can send the unit as a parcel or book a UPS collection for an extra charge. After the repair, UPS brings the unit from Airbag24 back to you.

Put the printed repair order into the parcel and pack it so that it is shock-resistant.