Airbag control unit with part number 89170-0DE30

What does the airbag control unit 89170-0DE30 do?

The airbag control unit 89170-0DE30 controls the restraint system (SRS) in Toyota vehicles. In a crash, it processes the signals from the crash sensors and determines within milliseconds which airbags and seatbelt pretensioners are triggered.

Outside of an accident, the unit works without interruption. It monitors the components and reports faults via the airbag warning light in the instrument cluster.

After an accident, it stores crash data and locks itself. In everyday use this stays hidden, but a diagnosis reveals it.

Why does the control unit 89170-0DE30 fail?

The most common cause is crash data from an accident, even if no airbag has deployed. Aged electronic components, cold solder joints, moisture and corrosion on plug connections, and voltage spikes, for example from a weak battery, are also possible causes.

Crash data cannot be removed with a standard diagnostic tool. The problem therefore remains in the control unit and cannot be resolved through the fault memory alone.

Aged components and cold solder joints change over time and make the connection inside the unit unreliable.

Moisture, corrosion and voltage spikes from a jump start act on the electronics from the outside.

How can you tell that the 89170-0DE30 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently. An error message in the instrument cluster accompanies it, the diagnostic tool does not connect to the control unit, and the fault memory cannot be cleared.

The light is a message from the system itself, not a mere suspicion. It shows the finding before further consequences become apparent.

In an emergency, airbags and seatbelt pretensioners may then fail to deploy. A prompt check is therefore sensible.

Which vehicles is the 89170-0DE30 fitted in?

The details come from our assignment. The control unit 89170-0DE30 is fitted in these vehicles: Toyota Yaris XP210 (from 2020).

To this part number we currently assign the vehicles listed here. The list should not be regarded as conclusive.

• Toyota Yaris XP210 (from 2020)

Comparing the part number on the label with this page only shows whether you have the right unit. Having the fault memory read out beforehand, however, shows whether the control unit is defective or whether a plug 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 89170-0DE30 work?

First, have the fault memory read out and attach the log. Then disconnect the battery and only then remove the control unit. Next, create a repair order online and pack the unit well before sending it in.

Airbag24 examines the unit on the test bench, repairs the defective components, removes the crash data and carries out a function test. After that, the customer's own unit is returned.

For checking, repairing and testing, processing at us 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 89170-0DE30 get to Airbag24?

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

The printed repair order belongs in the parcel, and the unit must be packed shock-proof.