Airbag control unit with part number 89170-06A30

What does the airbag control unit 89170-06A30 do?

Within the restraint system (SRS) of Lexus and Toyota, the airbag control unit 89170-06A30 is the point where decisions are made. It evaluates the crash sensors, determines in an accident within milliseconds which airbags and seatbelt pretensioners trigger, and monitors the system continuously. After an accident it stores crash data and locks itself.

If monitoring detects a fault, the unit switches on the airbag warning light in the instrument cluster.

Why does the control unit 89170-06A30 fail?

The most common cause is stored crash data from an accident, even if no airbag has triggered; it cannot be cleared with an ordinary diagnostic tool. Further causes that come into question are ageing electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes such as those from a weak battery or a jump start.

In the event of a failure, the focus on crash data is therefore obvious, because it stems from the accident itself.

The rest of the electronics is more susceptible when components age, solder joints go cold or moisture gets into plug connections. Voltage spikes from the vehicle electrical system add a further load.

How can you tell that the 89170-06A30 is defective?

The airbag warning light stays on constantly or intermittently, an error message is shown in the instrument cluster, the diagnostic tool cannot reach the control unit, and the fault memory cannot be cleared. Airbags and seatbelt pretensioners may therefore possibly fail to deploy in an emergency.

The warning light shows the fault as soon as the unit recognises it. Whether it burns constantly or only now and then makes no difference to the warning.

A diagnostic tool that cannot establish a connection to the control unit is a separate signal that justifies a check.

Which vehicles is the 89170-06A30 fitted in?

The airbag control unit 89170-06A30 is fitted in these vehicles: Lexus ES AXZH60 (from 2018); Toyota Camry XV70 (2017-2020) and XV70 Facelift (2020-2024). The list only shows roughly whether a particular car is affected.

The vehicles known to us for this number are shown in the following overview:

• Lexus ES AXZH60 (from 2018)
• Toyota Camry XV70 (2017-2020)
• Toyota Camry XV70 Facelift (2020-2024)

Comparing the part number on the label with this page makes sure you have the right unit in front of you. Whether the control unit itself is defective or a plug or cable is behind it is shown only by reading out the fault memory, which you should therefore have done before anything else.

For the same vehicles, we also repair control units with the part numbers 150800-2310, 89170-06770, 89170-06820, 89170-06850, 89170-06880, 89170-06B21.

How does the repair of the 89170-06A30 work?

You have the fault memory read out and enclose the log, then disconnect the battery and remove the control unit. After that you create the repair order online and pack the unit carefully before sending it. Airbag24 checks the unit, replaces defective components, deletes stored crash data and carries out a functional test; this usually takes 3–4 working days.

The order of the first steps is prescribed for your safety.

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 89170-06A30 get to Airbag24?

You send the unit as a parcel or book a UPS collection for an extra charge. Airbag24 returns it to you by UPS after the repair. Put the printed repair order into the parcel.

Pack the control unit shock-resistant so that it survives shipping undamaged.