Airbag control unit with part number 89170-08110

What does the airbag control unit 89170-08110 do?

The airbag control unit 89170-08110 controls the restraint system (SRS) for Toyota. From the signals of the crash sensors it determines whether an accident has occurred and, in an emergency, triggers the appropriate airbags and seatbelt pretensioners. Detected faults are reported via the airbag warning light.

Monitoring runs in the background throughout the entire journey.

After an accident the unit records crash data and locks itself. Only the repair returns it to its normal state.

Why does the control unit 89170-08110 fail?

The most common cause is crash data from a previous accident, even if no airbag has deployed; a standard diagnostic tool cannot erase it. In addition, ageing electronics, cold solder joints, moisture and corrosion, and voltage spikes come into consideration for the control unit 89170-08110.

Further causes include:

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

How can you tell that the 89170-08110 is defective?

A defect on the 89170-08110 can be recognised by the airbag warning light, which lights up permanently or intermittently, by error messages in the instrument cluster, by a missing connection to the diagnostic tool, or by a fault memory that cannot be cleared.

If the fault memory remains after an attempt to clear it, this indicates a fault that must be investigated further.

In an emergency, airbags and seatbelt pretensioners may possibly not trigger if there is a fault.

Which vehicles is the 89170-08110 fitted in?

The 89170-08110 is fitted in these vehicles: Toyota Sienna XL30 (2010-2020).

Below you will find the list of vehicles on record for this part number.

• Toyota Sienna XL30 (2010-2020)

First compare the part number on the label of the removed unit with this page; this only confirms that it is the correct unit. Also have the fault memory read out, because this result shows whether the control unit is defective or a plug or cable is affected.

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 89170-08110 work?

First have the fault memory read out and attach the log to the unit; then disconnect the battery and only then remove the control unit 89170-08110. Then create a repair order online and send in the well-packed unit. Processing at Airbag24 usually takes 3–4 working days, during which the unit is checked, repaired and tested.

Airbag24 checks the submitted unit on the test bench, repairs defective components, erases the stored crash data and carries out a function test.

Afterwards your own unit goes 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 89170-08110 get to Airbag24?

You send the control unit 89170-08110 as a parcel, or book UPS collection for an extra charge. Airbag24 sends the repaired unit back to you by UPS.

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