Airbag control unit with part number 89170-52B60

What does the airbag control unit 89170-52B60 do?

The airbag control unit 89170-52B60 is the central switching unit of the restraint system (SRS) in Toyota. It evaluates the crash sensors and, in an accident, decides within milliseconds whether airbags and seatbelt pretensioners are triggered.

It also monitors the entire system permanently and reports faults via the airbag warning light in the instrument cluster. After an accident it stores crash data and then locks itself.

Why does the control unit 89170-52B60 fail?

The most common cause on the 89170-52B60 is crash data stored after an accident, even if no airbag has deployed. Other causes are aged electronics, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes.

Crash data of this kind cannot be erased with a normal diagnostic tool, which is why it stays in the device until it is repaired. Airbag24 erases it during the repair.

Aged components and cold solder joints affect the electronics directly. Moisture and corrosion attack the plug connections.

Voltage spikes additionally stress the electronics, for example from a weak battery or from a jump start.

How can you tell that the 89170-52B60 is defective?

A defect on the 89170-52B60 can be recognised by the airbag warning light in the instrument cluster, which stays on permanently or intermittently. Fault messages may also appear, the diagnostic tool may fail to connect, and the fault memory may persist.

If the control unit is in this condition, airbags and seatbelt pretensioners may not deploy in an emergency. Check the warning promptly, because safety in an emergency depends on it.

Which vehicles is the 89170-52B60 fitted in?

The 89170-52B60 is fitted in these vehicles: Toyota Yaris XP90 (2005-2009) and XP90 Facelift (2009-2011).

These models are recorded for this part number:

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

Compare the part number on the label of the removed device with this page. Then you have the matching device in front of you. Before you remove the control unit from the vehicle, also have the fault memory read out. Only this log shows whether the control unit itself is defective or whether a plug 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 89170-52B60 work?

First you read out the fault memory and attach the log. Only then disconnect the battery and remove the 89170-52B60. Afterwards create a repair order online and pack the device well for shipping. Processing at Airbag24, meaning checking, repairing and testing, usually takes 3–4 working days.

The order is mandatory for safety reasons, which is why the control unit may only be removed once the memory has been read out and the battery disconnected.

At Airbag24 the device is examined on the test bench, defective components are replaced, the crash data is erased and a function test is carried out. For this work, 3–4 working days are generally planned. Afterwards your own device 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 89170-52B60 get to Airbag24?

You send the 89170-52B60 in as a parcel or book a UPS collection for an extra charge. After the repair Airbag24 returns the device by UPS.

The printed repair order belongs in the parcel. Pack the control unit shockproof.