Airbag control unit with part number 89170-35280

What does the airbag control unit 89170-35280 do?

The airbag control unit 89170-35280 forms the control unit of the restraint system (SRS) for Toyota. It queries the crash sensors, evaluates the signals and triggers airbags and seatbelt pretensioners specifically in an accident. After an accident, it stores crash data and locks itself.

Its job also includes permanent monitoring: the unit checks the system constantly.

If it detects a fault, the airbag warning light in the instrument cluster comes on. The lock ends only with the repair.

Why does the control unit 89170-35280 fail?

The most common cause for the 89170-35280 is crash data stored after an accident, even if no airbag has deployed. This data cannot be erased with a normal diagnostic tool; Airbag24 removes it during the repair. Also involved are aged components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

The crash data is held in the control unit itself. An attempt to remove it from the vehicle therefore fails.

The other causes relate to ageing and environmental influences. Electronic components change with age, solder joints can go cold, and moisture attacks the contacts.

Voltage spikes, for example from a weak battery or a jump start, also stress the electronics. Which cause applies in the individual case is shown by the check on the test bench.

How can you tell that the 89170-35280 is defective?

The airbag warning light in the instrument cluster stays on at the 89170-35280 permanently or intermittently. In addition, a fault message appears in the instrument cluster, there is no connection to the diagnostic tool, or the fault memory cannot be cleared.

The warning light is the central warning sign in everyday driving.

As long as the fault persists, the airbags and seatbelt pretensioners may not deploy in an emergency. Unremarkable driving behaviour changes nothing about this.

Which vehicles is the 89170-35280 fitted in?

The 89170-35280 is installed in these vehicles: Toyota FJ Cruiser GSJ15 (2006-2022). The assignment follows the part number of the unit.

The assignment is listed here:

• Toyota FJ Cruiser GSJ15 (2006-2022)

Take the label of the removed unit and compare the part number with this page. This shows you that it is the right unit, and nothing more. It is also advisable to have the fault memory read out beforehand, because it 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 89170-35300, 89170-35320, 89170-35380, 89170-35470.

How does the repair of the 89170-35280 work?

On the 89170-35280, first have the fault memory read out and enclose the log. Then disconnect the battery, and only then remove the control unit. Next, create a repair order online and pack the unit carefully. At Airbag24, checking, repairing and testing usually take 3–4 working days.

Airbag24 first checks the unit on the test bench, repairs defective components, erases the crash data and carries out a function test. Afterwards, your own unit 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 89170-35280 get to Airbag24?

You send the 89170-35280 as a parcel, or you book a UPS collection for an extra charge. After the repair, Airbag24 sends the unit back by UPS.

Put the printed repair order into the parcel, and pack the control unit shock-proof.