Airbag control unit with part number 89170-04720

What does the airbag control unit 89170-04720 do?

The airbag control unit 89170-04720 manages the restraint system (SRS) of Toyota. In an accident it processes the sensor data and determines which airbags and seatbelt pretensioners are triggered.

The unit also checks continuously whether the system is working correctly. If there is a deviation, the airbag warning light shows a signal.

An accident causes crash data to be stored in the unit, and the control unit is locked afterwards.

Why does the control unit 89170-04720 fail?

Most often the cause is crash data stored after an accident, even if no airbag has triggered. Added to this are aged electronics, cold solder joints, moisture and corrosion on plug connections, as well as voltage spikes.

Crash data cannot be removed with a standard diagnostic tool. Deletion takes place at Airbag24 as part of the repair.

Voltage spikes, for example from a weak battery or a jump start, can also cause faults. Whether they apply in the individual case is shown only by the test.

How can you tell that the 89170-04720 is defective?

The airbag warning light in the instrument cluster stays on constantly or intermittently, and an error message also appears. The diagnostic tool does not establish a connection to the control unit, and a fault memory cannot be cleared.

In an emergency, airbags and seatbelt pretensioners may possibly not trigger if the control unit is defective.

Therefore keep an eye on the warning symbol and have it assessed by a specialist workshop promptly.

Which vehicles is the 89170-04720 fitted in?

The control unit 89170-04720 from Toyota is fitted in these vehicles: Toyota Tacoma N300 (2015-2019) and N300 Facelift (2019-2023).

Next you will find the list of vehicles that are assigned to this part number.

• Toyota Tacoma N300 (2015-2019)
• Toyota Tacoma N300 Facelift (2019-2023)

Comparing the part number on the unit with this page only confirms that you have the right unit in front of you. Have the fault memory read out before removal, because only this log shows whether the control unit itself is defective or whether a connector or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 89170-04080, 89170-04120, 89170-04150, 89170-04570.

How does the repair of the 89170-04720 work?

First have the fault memory read out, attach the log, disconnect the battery and only then remove the control unit 89170-04720. Afterwards create a repair order online and send in the well-packed unit. Processing at Airbag24 usually takes 3–4 working days.

Airbag24 examines the unit on the test bench, reworks defective components, deletes the crash data and carries out a function test. Afterwards your own unit is 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 89170-04720 get to Airbag24?

You send the control unit 89170-04720 off as a package or book a UPS collection for an extra charge. After the repair, your own unit comes back to you by UPS.

Enclose the printed repair order with the package and pad the unit so that it is shock-proof.