Airbag control unit with part number 89170-04320

What does the airbag control unit 89170-04320 do?

As the airbag control unit 89170-04320, the unit in the restraint system (SRS) of Toyota evaluates the crash sensors. In an accident it decides within milliseconds about airbags and seatbelt pretensioners and monitors the system continuously.

The unit indicates faults via the airbag warning light. After an accident it stores crash data and locks itself. This monitoring is the basis for faults being noticed at all.

Why does the control unit 89170-04320 fail?

The most common cause is stored crash data after an accident, even without a triggered airbag; a normal diagnostic tool cannot erase it. Other causes are aged components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Storage does not depend on whether an airbag was triggered. Airbag24 erases the data during the repair.

Aged components, cold solder joints, and moisture or corrosion at plug connections count among the other causes.

Voltage spikes, for example from a weak battery or a jump start, can likewise contribute to a failure.

How can you tell that the 89170-04320 is defective?

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

As long as such a defect exists, airbags and seatbelt pretensioners may fail to trigger in an emergency. The warning light is therefore not a minor matter.

Which vehicles is the 89170-04320 fitted in?

The 89170-04320 is fitted in the following vehicle: Toyota Tacoma N200 (2004-2015).

The vehicle details:

• Toyota Tacoma N200 (2004-2015)

Comparing the part number on the label of the removed unit with this page only ensures that you have the right unit. The cause is established by the fault memory, which you have read out beforehand. It shows whether the control unit is defective or whether a plug or cable is affected.

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 89170-04320 work?

First have the fault memory read out and enclose the log. Then disconnect the battery and only then remove the control unit; afterwards create a repair order online. The processing at Airbag24 usually takes 3–4 working days.

You send in the well-packed unit. Airbag24 checks it on the test bench, repairs defective components, erases stored crash data and performs a function test; after that your own unit 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 89170-04320 get to Airbag24?

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

The printed repair order goes into the parcel, and you pack the unit shockproof.