Airbag control unit with part number 89170-52C60

What does the airbag control unit 89170-52C60 do?

The airbag control unit 89170-52C60 controls the restraint system (SRS) of Toyota. It evaluates the crash sensors, decides in an accident whether airbags and seatbelt pretensioners are triggered, and monitors the interaction of the components continuously. After an accident it locks itself; the lock is lifted only by the repair.

The control unit checks lines, sensors and triggers continuously and records deviations in the fault memory.

Messages are shown via the instrument cluster, in particular via the airbag warning light. Anyone who keeps an eye on this display is immediately aware of a fault.

Why does the control unit 89170-52C60 fail?

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

The crash data arise in the control unit and remain stored there. Only the repair removes them.

The other causes build up gradually. Electronics age, solder joints become brittle, and moisture or corrosion attack the plug connections. Voltage spikes arise, for example, from a weak battery or a jump start.

How can you tell that the 89170-52C60 is defective?

The airbag warning light in the instrument cluster stays on intermittently or permanently, an error message appears, the diagnostic tool finds no connection to the control unit, and the fault memory cannot be cleared.

The warning light is the most important sign. Permanent lighting and intermittent lighting are both indications of a fault in the system.

If the connection to the diagnostic tool fails, or the fault memory stays full despite an attempt to clear it, the unit itself may be affected. In this state, airbags and seatbelt pretensioners may fail to deploy in an emergency.

Which vehicles is the 89170-52C60 fitted in?

The control unit 89170-52C60 is fitted in these vehicles: Toyota Yaris XP90 (2005-2009) and XP90 Facelift (2009-2011).

The following list shows the assignment in detail:

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

Comparing the part number on the label with this page ensures that the unit fits. Nothing more is established by this. Have the fault memory read out before removal: only the log shows whether the control unit is defective or whether a connector or cable is the cause.

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 89170-52C60 work?

You read out the fault memory and enclose the log, then disconnect the battery and remove the control unit 89170-52C60. Next, create the repair order online and send the unit in well packed. Processing at Airbag24 usually takes 3–4 working days.

At Airbag24 the unit is checked on the test bench: defective components are replaced, crash data are erased and a function test is carried out. Afterwards 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 89170-52C60 get to Airbag24?

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

Enclose the printed repair order and pack the control unit shock-proof.