Airbag control unit with part number 89170-47660

What does the airbag control unit 89170-47660 do?

The airbag control unit 89170-47660 controls the restraint system (SRS) of Toyota. It receives signals from the crash sensors and uses them to determine within milliseconds which airbags and seatbelt pretensioners fire in an accident. After an accident, it stores crash data and locks itself.

Between events, it continuously checks sensors, wiring and actuators. If it finds a fault, it reports it via the airbag warning light in the instrument cluster.

This continuous check runs unnoticed as long as everything is in order.

Why does the control unit 89170-47660 fail?

In the control unit 89170-47660, the most frequent cause of failure is a crash data entry: it is created after an accident, even if no airbag has deployed. Other possible causes are aged components, cold solder joints, moisture on connectors and voltage spikes.

An ordinary diagnostic tool cannot remove this entry. Only the repair clears it.

The other causes tend to develop gradually: components age, solder joints can go cold, and moisture on connectors sets corrosion in motion. A weak battery or a jump start can also generate voltage spikes.

How can you tell that the 89170-47660 is defective?

A defect in the 89170-47660 shows up through warning indicators in the vehicle and through the diagnostic tool. The airbag warning light may stay on permanently or intermittently, and the fault memory cannot be cleared.

You may notice these points:

• The airbag warning light in the instrument cluster stays on permanently or keeps coming on.
• An error message appears in the instrument cluster.
• The diagnostic tool cannot establish a connection to the control unit.
• The fault memory cannot be cleared.

As long as these signs persist, airbags and seatbelt pretensioners may not fire in an emergency. Please take the warning seriously.

Which vehicles is the 89170-47660 fitted in?

The control unit 89170-47660 is used in these vehicles: Toyota Prius IV XW50 (2015-2018) and IV XW50 Facelift (2018-2022).

Here is the list of vehicles:

• Toyota Prius IV XW50 (2015-2018)
• Toyota Prius IV XW50 Facelift (2018-2022)

Comparing the part number on the label of the removed unit with this page only confirms that you have the right unit. Having the fault memory read out beforehand shows whether the control unit is defective or whether a connector or cable is causing the problem.

For the same vehicles, we also repair control units with the part numbers 89170-47030, 89170-47611.

How does the repair of the 89170-47660 work?

Have the fault memory read out first; the log travels with the unit. Before you remove the control unit 89170-47660, disconnect the battery. Create the repair order online afterwards, and send the unit in carefully packed.

The sequence serves safety. At Airbag24, the unit is examined on the test bench, damaged components are repaired, crash data is deleted and a function test is carried out.

Checking, repairing and function testing usually takes 3–4 working days at Airbag24. 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 89170-47660 get to Airbag24?

You send the control unit 89170-47660 to Airbag24 yourself as a parcel, or you arrange a UPS collection for an extra charge. UPS returns the unit to you after the repair.

The printed repair order goes in the parcel. The unit must be packed shockproof.