Airbag control unit with part number 89170-0DG70

What does the airbag control unit 89170-0DG70 do?

The airbag control unit 89170-0DG70 is responsible for the restraint system (SRS) in the Toyota. It processes readings from the crash sensors, decides within milliseconds in an accident whether to trigger airbags and seatbelt pretensioners, and monitors the system continuously. It reports faults via the airbag warning light.

In the background, the unit checks its connections and the attached components, so that a fault is detected.

After an accident, it stores crash data and locks itself.

Why does the control unit 89170-0DG70 fail?

The most common cause is crash data from an accident, even if no airbag deployed. A normal diagnostic tool cannot delete this data. Ageing electronics, cold solder joints, moisture and corrosion on connectors, and voltage spikes are also involved.

Airbag24 removes the crash data during the repair. These other causes are summarised below:

• components that age over time
• cold solder joints in the unit
• moisture or corrosion on connectors
• voltage spikes, for example from a weak battery or when using a jump start

How can you tell that the 89170-0DG70 is defective?

The airbag warning light in the instrument cluster stays on permanently or intermittently, indicating a defect. A fault message may also appear in the instrument cluster.

A diagnostic tool that cannot connect to the control unit, or a fault memory that cannot be cleared, also points to a problem.

In an emergency, airbags and seatbelt pretensioners may fail to deploy. Follow up on the warning.

Which vehicles is the 89170-0DG70 fitted in?

The airbag control unit 89170-0DG70 is fitted in these vehicles: Toyota Yaris XP210 (from 2020).

The following list shows which vehicles match this part number.

• Toyota Yaris XP210 (from 2020)

Comparing the part number on the label of the removed unit with this page ensures that it is the correct unit; it does nothing more. Have the fault memory read out before removal, because only the result 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 89170-0D730, 89170-0DE60, 89170-0DF50, 89170-52350, 89170-K0060.

How does the repair of the 89170-0DG70 work?

First have the fault memory read out and attach the log. Then disconnect the battery and only afterwards remove the control unit. Next, create a repair order online and send the unit in well packed.

Airbag24 tests the unit on the test bench, replaces defective components, deletes the stored crash data and runs a function test. Processing usually takes 3–4 working days. Afterwards, your own unit is sent back.

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 89170-0DG70 get to Airbag24?

You either send the unit yourself as a parcel, or book a UPS collection for an extra charge. After the repair, UPS brings the unit back to you.

A printed repair order goes in the parcel, and the unit is packed shockproof.