Airbag control unit with part number 89170-0C630

What does the airbag control unit 89170-0C630 do?

The airbag control unit 89170-0C630 is the central control unit of the restraint system (SRS) in Toyota. It evaluates the signals from the crash sensors, decides in a crash within milliseconds which airbags and seatbelt pretensioners are triggered, and monitors the system continuously.

The unit reports any faults via the airbag warning light in the instrument cluster. This lets the driver know that something is wrong in the restraint system.

After a crash, the unit stores crash data and locks itself.

Why does the control unit 89170-0C630 fail?

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

Aged electronic components are another possible cause, as are cold solder joints, moisture and corrosion on plug connections, and voltage spikes, for example from a weak battery.

Stored crash data does not mean that the electronics are damaged. Only the inspection in the Airbag24 workshop can make that distinction.

How can you tell that the 89170-0C630 is defective?

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

• The airbag warning light lights up permanently or intermittently
• A fault message appears in the instrument cluster
• The diagnostic tool cannot connect to the control unit
• The fault memory cannot be cleared

In an emergency, airbags and seatbelt pretensioners may possibly fail to trigger if the control unit is defective. The fault memory should not be left unread.

Which vehicles is the 89170-0C630 fitted in?

The airbag control unit 89170-0C630 is fitted in these vehicles: Toyota Tundra K30 (2007-2021).

The following list names the vehicles for this part number.

• Toyota Tundra K30 (2007-2021)

Compare the part number on the label of the removed unit with this page. This shows you that it is the right unit. The cause is not yet established by this. Therefore have the fault memory read out, because only the result shows whether the control unit is defective or whether a plug or cable is responsible.

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 89170-0C630 work?

First have the fault memory read out and enclose the log. Then disconnect the battery and only then remove the control unit. Next, create a repair order online and pack the unit well before sending it in.

Airbag24 examines the unit on the test bench, replaces defective components, erases stored crash data and carries out a function test. The unit is then sent back to you.

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 89170-0C630 get to Airbag24?

You send the control unit 89170-0C630 in as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 returns it to you by UPS.

Please put the printed repair order into the parcel and pack the unit shock-resistant.