Airbag control unit with part number 89170-0DD00

What does the airbag control unit 89170-0DD00 do?

The airbag control unit 89170-0DD00 controls the restraint system (SRS) for Toyota. It checks the crash sensors and, in an accident, decides within a very short time whether airbags and seatbelt pretensioners are triggered.

In normal operation it monitors the system continuously. If it finds a fault, it reports it via the airbag warning light.

After an accident the unit stores crash data and locks itself.

Why does the control unit 89170-0DD00 fail?

Stored crash data is the most frequent cause, even if no airbag was triggered; a normal diagnostic tool cannot clear it. Aged components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes are also possible.

First the crash data: it sits in memory even when the vehicle has long been driving again after the accident.

The other causes tend to be gradual. Electronic components age, solder joints can go cold, and moisture attacks plug connections.

Voltage spikes, for example from a weak battery or a jump start, also put a strain on the electronics.

How can you tell that the 89170-0DD00 is defective?

A defect shows itself through an airbag warning light that lights up permanently or intermittently, through a fault message in the instrument cluster, through a diagnostic tool with no connection to the control unit, and through a fault memory that cannot be cleared. Airbags and seatbelt pretensioners may then fail to trigger in an emergency.

The warning light is therefore not a minor problem but a clear sign that the system must be checked.

Precisely because the indication is so clear, it pays to act quickly.

Which vehicles is the 89170-0DD00 fitted in?

The airbag control unit 89170-0DD00 is fitted in these vehicles: Toyota Yaris XP130 2nd Facelift (2017-2020), XP130 (2010-2014) and XP130 1st Facelift (2014-2017). Whether it suits your car you see from the label on the removed unit; the cause, however, only the fault memory shows.

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)

Do the label comparison with this page first. It only confirms that you have the right unit, nothing more. Then have the fault memory read out, because the log shows whether the control unit 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 89170-0DD00 work?

Have the fault memory read out, attach the log, and then disconnect the battery before the control unit is removed. Afterwards you create the repair order online and send the unit in packed. Airbag24 needs 3–4 working days as a rule for testing, repair and function test.

At the test bench Airbag24 examines the control unit, repairs defective components, removes the crash data and carries out a function test. Your own unit then 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 89170-0DD00 get to Airbag24?

Either you send the control unit as a parcel, or you arrange a UPS collection for an extra charge. The return after the repair is likewise made by UPS.

Enclose the printed repair order with the parcel; pack the unit shock-proof.