Airbag control unit with part number 89170-06640

What does the airbag control unit 89170-06640 do?

The airbag control unit 89170-06640 forms the control center of the restraint system (SRS) for Toyota. From the sensor signals it determines in a crash which airbags and seatbelt pretensioners fire, and it monitors the system continuously. It reports faults via the airbag warning light.

Monitoring runs constantly, whether the vehicle is driving or standing still. In this way the unit detects deviations early and keeps them in the fault memory.

After a crash, the unit stores crash data and locks itself. Nothing more can be derived from this fact for everyday function.

Why does the control unit 89170-06640 fail?

Stored crash data are the most common cause, even if no airbag was triggered. Other influences include aged electronic components, cold solder joints, moisture and corrosion at connectors, and voltage spikes, for example from a weak battery or jump-starting.

A normal diagnostic tool cannot delete this crash data. Airbag24 deletes it as part of the repair, so the cause can then be checked in a targeted way.

The other influences affect components and contacts that are stressed over time and can show themselves late.

How can you tell that the 89170-06640 is defective?

If the airbag warning light in the instrument cluster stays on permanently or only lights up now and then, that is a warning sign. Add to this an error message in the instrument cluster, a diagnostic tool without connection to the control unit, and a fault memory that cannot be cleared.

In an emergency, airbags and seatbelt pretensioners may therefore not trigger. Such a finding requires a prompt check.

The display in the instrument cluster is the direct signal from the control unit. You should respond to it rather than ignore it.

Which vehicles is the 89170-06640 fitted in?

The control unit 89170-06640 is fitted in these vehicles: Toyota Camry XV70 (2017-2020) and XV70 Facelift (2020-2024). The list below names the models in which this part number occurs.

The vehicles in detail:

• Toyota Camry XV70 (2017-2020)
• Toyota Camry XV70 Facelift (2020-2024)

A comparison of the part number on the label with this page only ensures that you have the right unit. Whether the control unit itself is defective or whether a connector or cable is the cause is shown only by the fault memory read out beforehand.

For the same vehicles, we also repair control units with the part numbers 150800-2310, 89170-06770, 89170-06B21.

How does the repair of the 89170-06640 work?

First the fault memory is read out and the log enclosed. Only then do you disconnect the battery and remove the control unit, and create a repair order online. Processing at Airbag24 usually takes 3–4 working days.

Send in the well-packed unit beforehand. At Airbag24 it is examined on the test bench, defective components are replaced, the crash data is deleted and a function test is run. 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 89170-06640 get to Airbag24?

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

Enclose the printed repair order with the parcel, and pack the unit shock-proof.