Airbag control unit with part number 89170-60450

What does the airbag control unit 89170-60450 do?

The airbag control unit 89170-60450 is the central control unit of the restraint system (SRS) for Toyota. It evaluates the signals from the sensors, decides within milliseconds in an accident which airbags and seatbelt pretensioners are triggered, and monitors the system continuously. It reports detected faults via the airbag warning light.

Monitoring runs throughout the entire journey. The control unit checks the input signals continuously for plausibility so that faults are noticed early.

After an accident, it stores crash data and locks itself.

Why does the control unit 89170-60450 fail?

The most common cause is crash data stored after an accident, even if no airbag was deployed; a normal diagnostic tool cannot erase it. Other causes are aged electronic components, cold solder joints, moisture and corrosion on plug connectors, and voltage spikes, for example from a weak battery or a jump start.

The fact that no airbag deployed therefore does not mean that the control unit has stored no crash data.

The other causes concern the electronics and their connections. Components that have been exposed to heat and vibration for years can deteriorate. Plug connectors with moisture or corrosion transmit signals only unreliably, and strong voltage fluctuations put additional stress on the circuits.

How can you tell that the 89170-60450 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, and an error message appears in the instrument cluster. The diagnostic tool receives no connection to the control unit, or the fault memory cannot be cleared. In this case, airbags and seatbelt pretensioners may possibly fail to trigger in an emergency.

The light signals a fault in the system even when the vehicle otherwise behaves normally. Do not leave it without a check, because only the read-out shows the cause.

A light that comes on only intermittently also indicates a detected fault. You should have the vehicle checked in that case too.

Which vehicles is the 89170-60450 fitted in?

The control unit 89170-60450 is fitted in these vehicles: Toyota Prado J150 1st Facelift (2013-2015), J150 2nd Facelift (2015-2018), J150 3rd Facelift (2018-2024) and J150 (2009-2013). The list refers to the vehicles for which this part number is recorded.

The vehicles on record are listed below.

• Toyota Prado J150 1st Facelift (2013-2015)
• Toyota Prado J150 2nd Facelift (2015-2018)
• Toyota Prado J150 3rd Facelift (2018-2024)
• Toyota Prado J150 (2009-2013)

Before that, bear the following in mind. Compare the part number on the label of the removed unit with this page; this only ensures that it is the right unit. Also have the fault memory read out beforehand: only this log shows whether the control unit is defective or a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 150300-2965, 89170-60540, 89170-60630, 89170-60631.

How does the repair of the 89170-60450 work?

First have the fault memory read out and enclose the log; then disconnect the battery and only then remove the control unit. Only afterwards create a repair order online and send in the well-packed unit.

At Airbag24, the unit is first examined on the test bench. Airbag24 then replaces defective components, erases stored crash data and carries out a functional test; afterwards your own unit goes 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 89170-60450 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 to you by UPS. Put the printed repair order into the package, and pack the control unit to withstand shocks.

Protective packaging that withstands shocks protects the unit on its way to Airbag24 and back again.