Airbag control unit with part number 89170-07390

What does the airbag control unit 89170-07390 do?

The airbag control unit 89170-07390 is the control unit of the restraint system (SRS) in Toyota. It constantly checks the system signals, decides in a crash on the triggering of airbags and seatbelt pretensioners, and reports faults to the airbag warning light.

After an accident the device stores crash data and locks itself. Monitoring continues without interruption.

Why does the control unit 89170-07390 fail?

The most common cause is crash data that was stored after an accident without any airbag triggering. Standard diagnostic technology cannot remove it; Airbag24 handles that during the repair. On the control unit 89170-07390, ageing, moisture and voltage spikes also act.

The other causes include:

• ageing of electronic components
• cold solder joints
• moisture and corrosion at plug connections
• voltage spikes from a weak battery or a jump start

How can you tell that the 89170-07390 is defective?

You can recognise a defect by the airbag warning light, which lights up permanently or intermittently. Added to this are fault messages in the instrument cluster, a missing connection to the diagnostic tool, and a fault memory that cannot be cleared.

In an emergency, airbags and seatbelt pretensioners may then not trigger. The light shows the condition continuously.

Which vehicles is the 89170-07390 fitted in?

The control unit 89170-07390 is fitted in these vehicles: Toyota Avalon XX50 Facelift (from 2022) and XX50 (2018-2022). Whether your car is affected, you confirm from the vehicle papers.

The vehicles in detail:

• Toyota Avalon XX50 Facelift (from 2022)
• Toyota Avalon XX50 (2018-2022)

Checking a number on the device against this page only shows that it is the right device. Having the fault memory read out before removal is the decisive step, because only this result shows whether the control unit is defective or whether a plug or cable is the cause.

How does the repair of the 89170-07390 work?

At Airbag24 processing for checking and repair usually takes 3–4 working days. Beforehand you have the fault memory read out, enclose the log, disconnect the battery and remove the control unit 89170-07390 before you create the repair order online.

First Airbag24 checks the device on the test bench, repairs defective spots, deletes the crash data and carries out a function test. You send in a well-packed device beforehand.

Afterwards your own device 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 89170-07390 get to Airbag24?

You send the device as a parcel, or you book a UPS collection for an extra charge. After the repair it comes back to you via UPS.

Enclose the printed repair order and pack the control unit so that it is protected against shocks.