Airbag control unit with part number 89170-35400

What does the airbag control unit 89170-35400 do?

As an SRS control unit, the airbag control unit 89170-35400 in Toyota models ensures that airbags and seatbelt pretensioners deploy correctly in an emergency. It reads the signals from the crash sensors, makes the deployment decision within milliseconds and locks itself after an accident, once it has stored crash data.

The unit checks the connected components permanently. The airbag warning light in the instrument cluster tells you when it has found a fault.

Why does the control unit 89170-35400 fail?

Stored crash data is the most common cause for 89170-35400, even if no airbag was deployed in the accident. Further causes are aging electronics, cold solder joints, moisture at plug connections and voltage spikes.

A normal diagnostic tool cannot clear the memory content, which is why Airbag24 takes this on during the repair.

Other causes also occur:

• aging electronic components
• cold solder joints
• moisture and corrosion at plug connections
• voltage spikes from a weak battery or a jump-start

How can you tell that the 89170-35400 is defective?

A defect in the 89170-35400 can be recognised by several signs that you can check yourself.

Typical indications are:

• airbag warning light that stays on permanently or intermittently
• fault message in the instrument cluster
• missing communication with the diagnostic tool
• fault memory that cannot be cleared

In an emergency, airbags and seatbelt pretensioners could then possibly fail to deploy, so a prompt check makes sense.

Which vehicles is the 89170-35400 fitted in?

The control unit 89170-35400 was fitted in the following models: Toyota FJ Cruiser GSJ15 (2006-2022).

The matching list follows directly below:

• Toyota FJ Cruiser GSJ15 (2006-2022)

Comparing the part number on the unit with this page only shows that you have the right unit. The cause is established by the fault memory, which you have read out beforehand, because it reveals whether the control unit or a connection is affected.

For the same vehicles, we also repair control units with the part numbers 89170-35230, 89170-35270, 89170-35280, 89170-35290, 89170-35300, 89170-35320.

How does the repair of the 89170-35400 work?

Airbag24 needs 3–4 working days for checking, repairing and testing the 89170-35400. During this time the team examines the unit on the test bench, replaces defective components, erases stored crash data and carries out a function test.

Independently of this, you take care of the following yourself: have the fault memory read out, attach the log, disconnect the battery and only then remove the control unit. Then create the repair order online and send in the well-packed unit.

After the function test your own unit is returned 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 89170-35400 get to Airbag24?

The unit comes to Airbag24 as a parcel, or you book a UPS collection for an extra charge. Airbag24 handles the return by UPS.

Pack the control unit shockproof, and the printed repair order goes into the parcel.