Airbag control unit with part number 89170-04341

What does the airbag control unit 89170-04341 do?

The airbag control unit 89170-04341 coordinates the restraint system (SRS) in the Toyota vehicle. It uses sensors to detect whether an impact has occurred and then decides within milliseconds which airbags and seatbelt pretensioners to trigger. After an accident it stores crash data and locks itself.

During normal operation it checks the circuits continuously and reports faults to the airbag warning light.

The lock only ends once the control unit has been repaired.

Why does the control unit 89170-04341 fail?

Stored crash data is the most common cause, even when no airbag has fired. A standard diagnostic tool cannot erase it. Other triggers are aged components, cold solder joints, moisture, corrosion on plug connections and voltage spikes.

An accident leaves records in the control unit, even if none of the airbags has fired. The standard diagnostic tool cannot access this data.

Components age, solder joints can go cold, and moisture with corrosion attacks plug connections.

Voltage spikes from a weak battery or a jump-start place additional strain on the electronics.

How can you tell that the 89170-04341 is defective?

The airbag warning light in the instrument cluster stays on permanently or lights up intermittently. In addition, an error message may appear, the diagnostic tool loses contact with the control unit, and the fault memory cannot be cleared.

As long as these signs persist, the airbags and seatbelt pretensioners may not be able to trigger in an emergency.

The light itself does not reveal the cause. For that, the fault memory has to be read out.

Which vehicles is the 89170-04341 fitted in?

The 89170-04341 is fitted in these vehicles: Toyota Tacoma N200 (2004-2015).

This list shows the vehicles that belong to the part number:

• Toyota Tacoma N200 (2004-2015)

Compare the number on the label of the removed unit with this page. This only confirms that it is the correct unit. Whether the control unit is defective or a plug is the cause only becomes clear from the fault memory read out beforehand.

For the same vehicles, we also repair control units with the part numbers 89170-04420, 89170-04570, 89170-04600, 89170-04650.

How does the repair of the 89170-04341 work?

Have the fault memory read out, attach the log and then disconnect the battery. Only then remove the control unit and create a repair order online. At Airbag24, processing usually takes 3–4 working days.

Airbag24 tests the unit on the test bench, repairs defective components, erases stored 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 89170-04341 get to Airbag24?

You send the unit as a parcel or book a UPS collection for an extra charge. After the repair Airbag24 sends it back by UPS.

Place the well-packed control unit in the box together with the repair order.