Airbag control unit with part number 89170-0D320

What does the airbag control unit 89170-0D320 do?

The airbag control unit 89170-0D320 is the control unit of the restraint system (SRS) for Toyota. It evaluates crash sensors, determines in a crash which airbags and seatbelt pretensioners trigger, and monitors the system permanently.

The unit stores faults in the fault memory and shows them via the airbag warning light. This keeps the state of the system transparent for you.

After an accident the unit secures crash data and locks itself. The lock is one of the features that matter later if problems occur.

Why does the control unit 89170-0D320 fail?

The most common cause is stored crash data after an accident, even if no airbag has deployed. Further causes are aged electronics, cold solder joints, moisture and corrosion on plugs, and voltage spikes.

Crash data stays in the unit because a normal diagnostic tool cannot erase it. Airbag24 erases it specifically during the repair, so the system can be tested freely again afterwards.

The other causes concern electronics in everyday use. An aged component, a cold solder joint or a damp plug can disturb the unit just as much as a weak battery or a jump start.

How can you tell that the 89170-0D320 is defective?

The airbag warning light lights up permanently or intermittently, an error message appears in the instrument cluster, the diagnostic tool finds no connection to the control unit, and the fault memory cannot be cleared.

• airbag warning light permanently or intermittently on
• error message in the instrument cluster
• no connection to the diagnostic tool
• fault memory cannot be cleared

In an emergency, airbags and seatbelt pretensioners may then not trigger.

Which vehicles is the 89170-0D320 fitted in?

The control unit 89170-0D320 is fitted in these vehicles: Toyota Yaris XP130 (2010-2014), XP130 1st Facelift (2014-2017) and XP130 2nd Facelift (2017-2020).

The following models are on record for this part number:

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

Comparing the part number on the label of the removed unit with this page only ensures that it is the right unit. Having the fault memory read out beforehand, on the other hand, shows whether the control unit itself or a cable is the cause.

For the same vehicles, we also repair control units with the part numbers 2310009950, 89170-0D010, 89170-52350, 891700D610.

How does the repair of the 89170-0D320 work?

Have the fault memory read out and enclose the log with the unit. Then disconnect the battery and only then remove the control unit. Create a repair order online; processing at Airbag24 usually takes 3–4 working days.

Pack the unit well and send it in. Airbag24 checks it on the test bench, repairs defective components, erases crash data and carries out a function test before your own unit goes back.

The 3–4 working days refer only to this work at Airbag24. 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 89170-0D320 get to Airbag24?

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

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