Airbag control unit with part number 89170-35270

What does the airbag control unit 89170-35270 do?

In the restraint system (SRS) of Toyota, the airbag control unit 89170-35270 is responsible for evaluating the crash sensors. In a crash it decides within milliseconds which airbags and seatbelt pretensioners are triggered, and it checks the system continuously.

If the system detects a fault, the airbag warning light in the instrument cluster lights up. After a crash the control unit stores crash data and locks itself; the lock is lifted only by the repair.

Why does the control unit 89170-35270 fail?

If crash data was stored after an accident, that is the most common cause of a failure of the 89170-35270, even if no airbag was triggered. Aged electronic components, cold solder joints, moisture and corrosion on the plugs, and voltage spikes are also possible causes.

Crash data remains stored with a standard diagnostic tool. Airbag24 erases it during the repair.

The other causes develop over a longer period. Moisture and corrosion attack contacts, and a weak battery or a jump start can cause voltage spikes.

How can you tell that the 89170-35270 is defective?

A defect on the 89170-35270 shows up as an airbag warning light that lights up permanently or intermittently, as fault messages in the instrument cluster, as a missing connection to the diagnostic tool, or as a fault memory that cannot be cleared.

• The airbag warning light stays on permanently or intermittently.
• A fault message appears in the instrument cluster.
• The diagnostic tool finds no connection to the control unit.
• The fault memory cannot be cleared.

In the event of a crash, airbags and seatbelt pretensioners may possibly not trigger. Have the finding checked promptly.

Which vehicles is the 89170-35270 fitted in?

The 89170-35270 is fitted in several vehicles by Toyota. It is fitted in these vehicles: Toyota FJ Cruiser GSJ15 (2006-2022).

Here you can see which models are assigned:

• Toyota FJ Cruiser GSJ15 (2006-2022)

Compare the part number on the label of the removed unit with the part number on this page. This only ensures that it is the right unit. Have the fault memory read out beforehand, because it shows whether the control unit itself is at fault or a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 89170-35300, 89170-35320, 89170-35380, 89170-35470.

How does the repair of the 89170-35270 work?

First have the fault memory read out and attach the log. Then disconnect the battery and only then remove the control unit. Afterwards create a repair order online and pack the unit well for shipping.

Airbag24 checks the unit on the test bench, replaces defective components, erases stored crash data and carries out a function test. After that your unit goes back to you.

Processing at Airbag24 usually takes 3–4 working days and covers only checking, repairing and testing.

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 89170-35270 get to Airbag24?

You send the 89170-35270 as a parcel or book a UPS collection for an extra charge. After the repair Airbag24 sends the unit back to you by UPS.

Enclose the printed repair order in the parcel and pack the control unit shock-proof.