Airbag control unit with part number 89170-08210

What does the airbag control unit 89170-08210 do?

In the Toyota, the airbag control unit 89170-08210 controls the restraint system (SRS). It evaluates the crash sensors, determines in an emergency whether airbags and seatbelt pretensioners are triggered, and monitors the system continuously. Faults are shown via the airbag warning light.

In the event of an impact, the unit compares the measured values and selects the appropriate restraint devices. This happens in a fraction of a second.

After an accident, the unit stores crash data and locks itself.

Why does the control unit 89170-08210 fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed; a standard diagnostic tool cannot erase it. Other causes are:

• aged electronic components
• cold solder joints
• moisture and corrosion on plug connectors
• voltage spikes, for example from a weak battery or jump-starting

The crash data remains stored until Airbag24 removes it during the repair. The other points can likewise trigger a fault without any accident.

How can you tell that the 89170-08210 is defective?

Typical signs are an airbag warning light in the instrument cluster that lights up permanently or intermittently, an error message, no connection to the diagnostic tool, and a fault memory that cannot be cleared. In that case, airbags and seatbelt pretensioners may not deploy in an emergency.

• Airbag warning light lights up permanently or intermittently
• Error message in the instrument cluster
• Diagnostic tool receives no connection to the control unit
• Fault memory cannot be cleared

The warning light is the most important warning sign. If it stays on after the ignition is switched on, the finding must be checked.

Which vehicles is the 89170-08210 fitted in?

The airbag control unit 89170-08210 is fitted in these vehicles: Toyota Sienna XL30 (2010-2020). You can check in advance whether your vehicle is among them. A part number alone does not give a reliable answer to this.

The affected vehicles at a glance:

• Toyota Sienna XL30 (2010-2020)

Comparing the part number on the label of the removed unit with this page only confirms that you have the correct unit. Please also have the fault memory read out. The log 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 89170-08040, 89170-08130, 89170-08140, 89170-08170, 89170-08230.

How does the repair of the 89170-08210 work?

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 send the unit in, well packed. At Airbag24, testing, repair and function test usually take 3–4 working days.

Airbag24 checks the unit on the test bench, repairs defective components, erases the stored crash data and carries out a function test. Afterwards, 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 89170-08210 get to Airbag24?

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

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