Airbag control unit with part number 89170-0DC30

What does the airbag control unit 89170-0DC30 do?

The airbag control unit 89170-0DC30 controls the restraint system (SRS) of Toyota. In an accident, it evaluates the sensor signals and decides within milliseconds which airbags and seatbelt pretensioners to trigger. After an accident, it stores crash data and locks itself.

The electronics monitor the system even during normal driving. A detected fault appears via the airbag warning light in the instrument cluster.

Because the decision has to be made in fractions of a second, calculation paths and sensors are closely interwoven. Any disturbance in this chain can impair the function.

Why does the control unit 89170-0DC30 fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed; a standard diagnostic tool cannot erase it. Other causes include aged components, dry solder joints, moisture and corrosion on plug connections, and voltage spikes.

Stored crash data keeps the unit in the fault state, even though nothing outwardly appears wrong. Typical further triggers are:

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

These causes can hardly be narrowed down reliably from outside. Only an examination of the unit helps further.

How can you tell that the 89170-0DC30 is defective?

Typical signs are an airbag warning light that lights up permanently or intermittently, a fault message in the instrument cluster, and a diagnostic tool that cannot establish a connection to the control unit. A fault memory that cannot be cleared also belongs here. In an emergency, the airbags and seatbelt pretensioners may then not deploy.

Watch out for the following signs:

• airbag warning light in the instrument cluster, permanently or intermittently
• fault message in the instrument cluster
• no connection between the diagnostic tool and the control unit
• fault memory that cannot be cleared

Have the fault checked promptly, even if the vehicle continues to run.

Which vehicles is the 89170-0DC30 fitted in?

Compare your vehicle with the details before removal. Control unit 89170-0DC30 is fitted for Toyota in these vehicles: Toyota Yaris XP130 2nd Facelift (2017-2020), XP130 (2010-2014) and XP130 1st Facelift (2014-2017).

The following vehicles are assigned to this part number:

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

Matching the part number on the label of the removed unit with this page only confirms that it is the correct unit. Have the fault memory read out beforehand, because only the log shows whether the control unit is defective or 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 89170-0DC30 work?

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

Airbag24 checks the unit on the test bench, repairs defective components, erases stored crash data and carries out a function test. Only then is your own unit returned to you. Processing at Airbag24 usually takes 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 89170-0DC30 get to Airbag24?

You send the unit as a parcel or have it collected by UPS. After the repair, Airbag24 returns it to you via UPS.

Put the printed repair order into the parcel. Pack the control unit shock-proof.