Airbag control unit with part number 89170-0DG80

What does the airbag control unit 89170-0DG80 do?

The airbag control unit 89170-0DG80 is the central control unit of the restraint system in the Toyota. It uses the crash sensors to measure what happens in a collision and triggers the airbags and seatbelt pretensioners in an accident.

During operation the unit monitors the components of the system. If it finds a fault, it reports it via the airbag warning light.

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

Why does the control unit 89170-0DG80 fail?

Stored crash data is the most common cause of failure on the 89170-0DG80, even when no airbag has been triggered. Other causes include aged components, cold solder joints, moisture and corrosion, and voltage spikes.

The other causes at a glance:

• aged electronic components
• cold solder joints
• moisture and corrosion on the connectors
• voltage spikes, for example from a jump-start or a weak battery

Crash data stays in the unit, because a normal diagnostic tool cannot erase it.

How can you tell that the 89170-0DG80 is defective?

On the 89170-0DG80, the airbag warning light in the instrument cluster lights up permanently or intermittently. This is accompanied by a fault message in the instrument cluster, a diagnostic tool that cannot connect, and a fault memory that cannot be cleared.

The restraint system is then disrupted, and airbags and seatbelt pretensioners may not trigger in an emergency.

A test will quickly bring clarity.

Which vehicles is the 89170-0DG80 fitted in?

The control unit 89170-0DG80 is fitted in these vehicles: Toyota Yaris XP210 (from 2020).

The following list shows the assigned models.

• Toyota Yaris XP210 (from 2020)

Compare the part number on the unit with this page; this only confirms that you have the right unit. Whether the control unit itself is defective, or a connector or cable is the cause, is established by the read-out fault memory.

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 89170-0DG80 work?

For the 89170-0DG80, have the fault memory read out and enclose the log with the parcel. Then disconnect the battery and only after that remove the control unit. Online, create the repair order and pack the unit carefully.

Airbag24 tests the unit on the test bench, replaces defective components, erases the stored crash data and carries out a function test. Your own unit is then sent back to you.

For testing, repairing and checking, Airbag24 usually needs 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 89170-0DG80 get to Airbag24?

You can send the control unit 89170-0DG80 in as a parcel or have it collected by UPS for an extra charge. After the repair, Airbag24 returns it by UPS.

The printed repair order goes into the parcel, and the unit is packed shock-proof.