Airbag control unit with part number 89170-52M00

What does the airbag control unit 89170-52M00 do?

The crash sensors continuously supply measured values to the airbag control unit 89170-52M00. From these, the unit calculates in an accident which airbags and seatbelt pretensioners to trigger. It is the central control unit of the SRS for Toyota, and after an accident it stores crash data and locks itself.

The unit monitors the system constantly and reports faults via the airbag warning light in the instrument cluster.

Why does the control unit 89170-52M00 fail?

The most common cause in the 89170-52M00 is crash data stored from an accident, even without a triggered airbag. Other causes are ageing electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

A normal diagnostic tool cannot erase crash data. Airbag24 removes it during the repair by deleting the crash data, so that it plays no further role afterwards.

A weak battery or jump-starting can cause voltage spikes that damage the control unit. Which of these causes applies to your unit is shown only by the examination on the test bench.

How can you tell that the 89170-52M00 is defective?

The airbag warning light in the instrument cluster lights up on the 89170-52M00 either permanently or intermittently, and an error message appears. The diagnostic tool does not find the control unit, and the fault memory remains.

Typical signs are:

• The airbag warning light stays on permanently
• The error message appears in the instrument cluster
• A connection to the control unit cannot be established
• The fault memory cannot be cleared

In that case, airbags and seatbelt pretensioners may fail to trigger in an emergency. Have the finding checked promptly.

Which vehicles is the 89170-52M00 fitted in?

The control unit 89170-52M00 is fitted in these vehicles: Toyota Yaris XP130 2nd Facelift (2017-2020), XP130 (2010-2014) and XP130 1st Facelift (2014-2017).

Here are the vehicles recorded for this part number:

• Toyota Yaris XP130 2nd Facelift (2017-2020)
• Toyota Yaris XP130 (2010-2014)
• Toyota Yaris XP130 1st Facelift (2014-2017)

Comparing the part number on the label with this page only ensures that it is the correct unit. Have the fault memory read out beforehand. 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 2310009950, 89170-0D300, 89170-0D320, 89170-0D590, 89170-0D600, 89170-0D620.

How does the repair of the 89170-52M00 work?

First have the fault memory of the 89170-52M00 read out and enclose the log. Then disconnect the battery, only then remove the control unit. Afterwards, create a repair order online and send the unit in well packed.

Airbag24 tests the unit on the test bench, renews defective components and erases stored crash data. A functional test follows, after which the unit goes back to you. Processing at Airbag24 usually takes 3–4 working days.

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 89170-52M00 get to Airbag24?

You send the control unit 89170-52M00 as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 returns the unit to you by UPS.

Put the printed repair order into the parcel and pack the unit shockproof.