Airbag control unit with part number 89170-08090

What does the airbag control unit 89170-08090 do?

The airbag control unit 89170-08090 is the central control unit of the SRS restraint system in Toyota. From the data of the crash sensors it determines in an accident which airbags and seatbelt pretensioners to trigger, within milliseconds.

The system is monitored continuously during operation. If the unit detects a fault, it reports it via the airbag warning light.

After an accident it stores crash data and is locked afterwards.

Why does the control unit 89170-08090 fail?

Stored crash data from an accident is the most common cause, even if no airbag was triggered. Aged components, cold solder joints, moisture and corrosion on the plug connections, and voltage spikes are also possible.

A standard reading tool cannot access this data, and it cannot remove it either.

Voltage spikes, for example from a weak battery or a jump start, also stress the electronics.

How can you tell that the 89170-08090 is defective?

The airbag warning light in the instrument cluster lights up either continuously or only now and then, and an error message appears. In addition, the diagnostic tool cannot connect to the control unit, and the fault memory cannot be cleared.

In this state, airbags and seatbelt pretensioners may possibly fail to trigger in an emergency.

Take such warnings seriously and have the system checked promptly.

Which vehicles is the 89170-08090 fitted in?

The control unit 89170-08090 from Toyota is fitted in these vehicles: Toyota Sienna XL30 (2010-2020).

Below this paragraph you will find the overview of the vehicles listed for this part number.

• Toyota Sienna XL30 (2010-2020)

Comparing the part number on the label with this page ensures that you have the right unit. Whether the control unit itself is defective or a plug or cable is the cause is shown only by the fault memory, which you should have read out beforehand.

For the same vehicles, we also repair control units with the part numbers 89170-08040, 89170-08130, 89170-08140, 89170-08170, 89170-08230.

How does the repair of the 89170-08090 work?

Have the fault memory read out, attach the log, disconnect the battery and then remove the control unit 89170-08090. Afterwards create a repair order online and send the well-packed unit. Processing at Airbag24 usually takes 3–4 working days.

There, the unit is inspected on the test bench, defective components are reworked, the stored crash data is erased and a function test follows. The unit then comes back to you.

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 89170-08090 get to Airbag24?

You send the unit to Airbag24 as a parcel, or book a UPS pickup for an extra charge. After the repair Airbag24 sends it back by UPS.

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