Airbag control unit with part number 89170-0DF30

What does the airbag control unit 89170-0DF30 do?

The airbag control unit 89170-0DF30 is the central control unit of the restraint system (SRS) for Toyota. It analyses the signals from the crash sensors and decides within milliseconds in an accident whether airbags and seatbelt pretensioners are triggered. It reports faults via the airbag warning light.

The unit monitors the system continuously while the vehicle is in operation. After an accident it stores crash data and locks itself.

Why does the control unit 89170-0DF30 fail?

Stored crash data is the most common cause, even if no airbag has deployed. Other causes are ageing electronic components, dry solder joints, moisture and corrosion at plug connections, and voltage spikes.

Crash data cannot be erased with a normal diagnostic tool. That is why the fault persists even when the unit looks intact from the outside.

Solder joints and plug connections cannot always be judged from the outside. Only reading out the fault memory shows where the cause lies.

How can you tell that the 89170-0DF30 is defective?

A fault shows up as the airbag warning light in the instrument cluster, as error messages, as a lack of connection to the diagnostic tool, or as a fault memory that cannot be cleared.

• The airbag warning light stays on permanently or intermittently.
• An error message appears in the instrument cluster.
• The diagnostic tool cannot find a connection to the control unit.
• The fault memory cannot be cleared.

In an emergency, airbags and seatbelt pretensioners may fail to deploy. The warning light is a clear signal, and you should have it checked promptly.

Which vehicles is the 89170-0DF30 fitted in?

The control unit 89170-0DF30 is fitted in these vehicles: Toyota Yaris XP210 (from 2020).

The assignment looks like this:

• Toyota Yaris XP210 (from 2020)

Compare the part number on the label with this page. This comparison only confirms the unit. Have the fault memory read out beforehand, because only the result shows whether the control unit itself is defective or whether a plug or a cable is the cause.

For the same vehicles, we also repair control units with the part numbers 89170-0D730, 89170-0DE60, 89170-0DF50, 89170-52350, 89170-K0060.

How does the repair of the 89170-0DF30 work?

First have the fault memory read out and enclose the log. Then disconnect the battery and remove the control unit 89170-0DF30. Next, create a repair order online and send the unit in, well packed.

Airbag24 checks the unit on the test bench, replaces defective components, erases stored crash data and carries out a function test. Processing usually takes 3–4 working days.

Afterwards 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 89170-0DF30 get to Airbag24?

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

Put the printed repair order into the parcel and pack the unit shock-proof.