Airbag control unit with part number 89170-35230

What does the airbag control unit 89170-35230 do?

The airbag control unit 89170-35230 controls the restraint system (SRS) of Toyota. It evaluates the crash sensors and, in an accident, decides within fractions of a millisecond which airbags and seatbelt pretensioners are triggered.

In addition, it continuously checks its surroundings and reports faults via the airbag warning light in the instrument cluster.

After an accident it stores crash data and locks itself. Only a repair lifts the lock.

Why does the control unit 89170-35230 fail?

The most common cause after an accident is stored crash data, even if no airbag has triggered. A standard diagnostic tool cannot remove it. Ageing electronics, cold solder joints, moisture and corrosion at plug connections, and voltage spikes are also possible causes.

The crash data remains in the unit's memory. Airbag24 removes it during the repair.

The other causes concern ageing and environmental influences. Electronic components change over time, cold solder joints act as a weak point, and moisture with corrosion damages the plugs.

Voltage spikes, for example from a weak battery or a jump start, put additional strain on the electronics.

How can you tell that the 89170-35230 is defective?

A defect in the control unit 89170-35230 shows itself through the airbag warning light, fault messages in the instrument cluster, a missing connection to the diagnostic tool, or a fault memory that cannot be cleared.

Look out for the following signs:

• Airbag warning light lights up constantly or intermittently
• Fault message in the instrument cluster
• Diagnostic tool cannot find the control unit
• Fault memory cannot be cleared

In an emergency, airbags and seatbelt pretensioners may then fail to deploy. Please have the finding checked.

Which vehicles is the 89170-35230 fitted in?

The control unit 89170-35230 is fitted in these vehicles: Toyota FJ Cruiser GSJ15 (2006-2022).

The overview contains the vehicles for which the unit is intended:

• Toyota FJ Cruiser GSJ15 (2006-2022)

Compare the part number on the label of the removed unit with this page to make sure that you have the correct unit. Have the fault memory read out beforehand. Only the log shows whether the control unit is defective 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 89170-35230 work?

Processing at Airbag24 usually takes 3–4 working days. Airbag24 checks the control unit 89170-35230 on the test bench, repairs defective components, deletes the crash data and carries out a function test.

First have the fault memory read out and enclose the log. Then disconnect the battery and only afterwards remove the control unit.

Next, create a repair order online and pack the unit well before sending it in. You receive your own unit back after the repair.

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 89170-35230 get to Airbag24?

You send the control unit 89170-35230 in as a parcel or book a UPS collection for an extra charge. After the repair Airbag24 sends it back by UPS.

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