Airbag control unit with part number 89170-0D460

What does the airbag control unit 89170-0D460 do?

The airbag control unit 89170-0D460 coordinates the restraint system (SRS) in Toyota. It processes the signals from the sensors, determines in a crash which airbags and seatbelt pretensioners are triggered, and checks the system continuously. Faults appear via the airbag warning light in the instrument cluster.

The unit runs in the background as soon as the ignition is switched on. In an emergency it then decides within milliseconds.

If an accident occurs, the unit records crash data and locks itself.

Why does the control unit 89170-0D460 fail?

The most common cause is stored crash data after an accident, even when no airbag has triggered; a normal diagnostic tool cannot erase it. Ageing components, cold solder joints, moisture and corrosion, as well as voltage spikes, also play a role.

Crash data is the first place to look when the unit disturbs operation without an apparent reason. It sits inside the unit itself and cannot be seen from outside.

The remaining factors act over a longer period. Ageing electronics, hairline cracks in solder joints and moisture at the plugs affect the signals. Voltage spikes, for example from a weak battery or a jump start, put additional strain on the components.

How can you tell that the 89170-0D460 is defective?

A permanently or intermittently lit airbag warning light, an error message in the instrument cluster, a missing connection to the diagnostic tool and a fault memory that cannot be cleared all indicate a defect. In an emergency, airbags and seatbelt pretensioners may then fail to trigger.

The light is the system's direct indication of a fault. If it comes on, react promptly.

Even without any noticeable restriction while driving, the warning remains important.

Which vehicles is the 89170-0D460 fitted in?

The airbag control unit 89170-0D460 is fitted in these vehicles: Toyota Yaris XP90 (2005-2009) and XP90 Facelift (2009-2011).

The list shows the vehicles stored for this control unit in our records.

• Toyota Yaris XP90 (2005-2009)
• Toyota Yaris XP90 Facelift (2009-2011)

Two points are important before removal. Comparing the part number on the label with this page confirms that it is the correct unit. A read-out of the fault memory, on the other hand, clarifies whether the control unit itself or a plug or cable is affected.

For the same vehicles, we also repair control units with the part numbers 212986-105, 212986-110, 220749-101, 89170-0D170, 89170-0D230, 89170-0D440.

How does the repair of the 89170-0D460 work?

You first read out the fault memory and attach the log to the unit. Then disconnect the battery and remove the control unit. Create the repair order online, and pack the unit well before sending it in.

The sequence is binding for safety reasons and not negotiable.

At Airbag24 the unit is examined on the test bench, defective components are replaced and the crash data is erased. A function test follows. We usually need 3–4 working days for processing, after which your own unit is returned.

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 89170-0D460 get to Airbag24?

You send the unit as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 returns it by UPS. Enclose the printed repair order and pack the unit shockproof.

Shockproof means solid material, padding all round and no loose filling material in the carton.