Airbag control unit with part number 89170-06B31

What does the airbag control unit 89170-06B31 do?

The airbag control unit 89170-06B31 controls the restraint system (SRS) of Toyota. It reads the signals from the crash sensors and decides in an accident within milliseconds which airbags and seatbelt pretensioners are triggered.

It also monitors the system constantly. If it detects a fault, it indicates this via the airbag warning light.

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

Why does the control unit 89170-06B31 fail?

Crash data stored in the unit after an accident is the most common cause, even if no airbag was triggered. A normal diagnostic tool cannot delete it. Other factors include ageing components, moisture, corrosion and voltage spikes.

As long as the data remains stored, the fault persists. The other causes concern the electronics themselves: ageing components, cold solder joints on the circuit board, moisture and corrosion at plug connections, and voltage spikes, for example from a weak battery or a jump start.

How can you tell that the 89170-06B31 is defective?

A defect shows up as the airbag warning light in the instrument cluster, which stays on permanently or intermittently, as a fault message in the instrument cluster, as no connection to the diagnostic tool, or as a fault memory that cannot be cleared.

Typical signs at a glance:

• Airbag warning light on permanently or intermittently
• Fault message in the instrument cluster
• Diagnostic tool cannot find the control unit
• Fault memory cannot be cleared

As long as the defect exists, airbags and seatbelt pretensioners may fail to deploy in an emergency. Please take the warning light seriously.

Which vehicles is the 89170-06B31 fitted in?

The control unit 89170-06B31 is fitted in these vehicles: Toyota Camry XV70 (2017-2020) and XV70 Facelift (2020-2024).

These vehicles are on record for this part number:

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

Compare the number on the label of the removed unit with this page. That only confirms it is the right unit. Have the fault memory read out beforehand. Only the result 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 150800-2310, 89170-06770, 89170-06B21.

How does the repair of the 89170-06B31 work?

First have the fault memory read out and attach the log. Then disconnect the battery, only afterwards remove the control unit, and create an online repair order. Send the unit in well packed. Processing at Airbag24 usually takes 3–4 working days.

Airbag24 examines the unit on the test bench, repairs defective components, removes the crash data and tests the function. Afterwards your own, repaired unit comes back to you. The 3–4 working days relate solely to these tasks.

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 89170-06B31 get to Airbag24?

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

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