Airbag control unit with part number 89170-35290

What does the airbag control unit 89170-35290 do?

The control unit 89170-35290 forms the central control unit of the restraint system (SRS) for Toyota. From the signals of the crash sensors it works out, in the event of an accident and within a few milliseconds, which airbags and seatbelt pretensioners are triggered. Ongoing faults are shown on the airbag warning light.

In everyday use the unit works unnoticed in the background and checks the system continuously. If it detects a fault, it stores it in the fault memory, where it can be read out later.

After an accident the unit stores crash data and locks itself. The system reports this through fault messages in the instrument cluster, provided it is configured accordingly.

Why does the control unit 89170-35290 fail?

A control unit 89170-35290 can fail because of stored crash data, which was recorded after an accident even if no airbag fired. A normal diagnostic tool does not erase this data, but Airbag24 removes it during the repair.

Other factors can include aged electronic components, cold solder joints, and moisture and corrosion at plug connections. Voltage spikes, for example from a weak battery or a jump start, can also affect the unit and promote a failure.

How can you tell that the 89170-35290 is defective?

Typical signs of a defect on the 89170-35290 are the airbag warning light, a fault message in the instrument cluster and a diagnostic tool without a connection to the control unit. Added to this is a fault memory that cannot be erased.

• Airbag warning light in the instrument cluster, continuously or intermittently
• Fault message in the instrument cluster
• Diagnostic tool cannot establish a connection with the control unit
• Fault memory cannot be erased

With these signs, airbags and seatbelt pretensioners may possibly fail to trigger in an emergency. The cause should therefore be clarified promptly, before you continue driving.

Which vehicles is the 89170-35290 fitted in?

The control unit 89170-35290 is fitted in these vehicles: Toyota FJ Cruiser GSJ15 (2006-2022).

Here you can see the vehicles that are recorded for this part number.

• Toyota FJ Cruiser GSJ15 (2006-2022)

A comparison is worthwhile: the part number on the label of the removed unit should match the list. Read out the fault memory beforehand, because it shows whether the control unit is really defective or whether a cable or a connector is at fault.

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 89170-35290 work?

Airbag24 needs 3–4 working days as a rule for testing, repairing and checking. Before that you read out the fault memory, disconnect the battery, remove the control unit 89170-35290 and create a repair order online.

On the test bench the unit is examined, defective components are repaired and stored crash data is erased. A function test follows before the 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 89170-35290 get to Airbag24?

You send the control unit 89170-35290 as a parcel or book a UPS collection for an extra charge. After the repair it goes back to you by UPS.

Put the printed repair order into the parcel and pack the unit so that it is shock-resistant.