Airbag control unit with part number 89170-60451

What does the airbag control unit 89170-60451 do?

The airbag control unit 89170-60451 is the central control unit of the restraint system (SRS) in Toyota vehicles. It evaluates the crash sensors, determines in an accident within milliseconds whether airbags and seatbelt pretensioners are triggered, and monitors the system without interruption.

If a fault occurs, the unit displays it via the airbag warning light in the instrument cluster. The warning light is the first sign that the system is no longer fully operational.

After an accident the control unit stores crash data and locks itself. In this state the unit remains integrated in the vehicle.

Why does the control unit 89170-60451 fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed; a normal diagnostic tool cannot erase it. Other causes are ageing components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Crash data is saved in the unit's memory as soon as an accident has been registered. An ordinary diagnostic tool cannot remove this entry, which makes fault finding considerably harder.

Ageing components and cold solder joints are the typical consequences of temperature changes and vibration over many years of operation. Moisture and corrosion at plug connections lead to loose contacts, which can distort the signal.

Voltage spikes arise, for example, from a weak battery or when starting with jump leads, and can put a load on the electronics.

How can you tell that the 89170-60451 is defective?

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

The warning light is the sign you notice first. It stays on as long as the system has the fault on record, and is therefore a reliable indication.

If faults cannot be cleared from the fault memory, or the diagnostic tool cannot connect to the control unit, you should have the condition checked. In case of a defect, airbags and seatbelt pretensioners may not be able to deploy in an emergency.

Which vehicles is the 89170-60451 fitted in?

The 89170-60451 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 vehicles from the stored data are listed here:

• 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)

Compare the part number on the label of the removed unit with this page, so that you can be sure you have the right unit. Also have the fault memory read out beforehand. Only this result shows whether the control unit is defective or whether a plug or cable is causing the fault.

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 89170-60451 work?

First read out the fault memory and enclose the log, then disconnect the battery and remove the control unit. Then create a repair order online and send in the unit, well packed. Airbag24 checks, repairs and tests it as a rule within 3–4 working days.

This order is binding, because the unit may only be removed from the vehicle when the battery is disconnected.

At Airbag24 the unit is examined on the test bench. Defective components are replaced, stored crash data is erased and a function test is carried out. Afterwards your own unit returns 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 89170-60451 get to Airbag24?

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

Place the printed repair order in the parcel and pack the control unit shockproof.