Airbag control unit with part number 89170-06B10

What does the airbag control unit 89170-06B10 do?

The airbag control unit 89170-06B10 controls the restraint system (SRS) of Lexus and Toyota. It processes the signals from the crash sensors, selects the airbags and seatbelt pretensioners in a crash and checks the system continuously. Faults appear on the airbag warning light; after a crash it stores crash data and locks itself.

Monitoring covers wiring, sensors and output stages. If the unit detects a deviation, it creates an entry in the fault memory.

Evaluation in a crash has to be completed within milliseconds, which is why the sequences in the unit are fixed in advance.

Why does the control unit 89170-06B10 fail?

Stored crash data after an accident is the most common cause, even if no airbag has deployed, and a normal diagnostic tool cannot clear it. Aged electronics, cold solder joints, moisture and corrosion at plug connections, and voltage spikes are also to be considered.

Crash data remains in the unit and explains the faults that troubleshooting starts with. This also applies when the airbag did not deploy.

The other causes concern the hardware. Electronic components age, solder joints can go cold, and moisture or corrosion at contacts leads to malfunctions.

Voltage spikes, for example from a weak battery or a jump start, also strain the circuit.

How can you tell that the 89170-06B10 is defective?

Typical signs are an airbag warning light in the instrument cluster that lights up constantly or intermittently, a fault message in the instrument cluster, a diagnostic tool with no connection to the control unit, and a fault memory that cannot be cleared. Then the airbags and seatbelt pretensioners could fail to deploy in an emergency.

The warning light is the clearest sign. It shows that the restraint system has a fault and must not be overlooked.

A diagnostic tool that has no access to the control unit is likewise a reason to have the system checked. Recurring fault messages also belong in this group.

Which vehicles is the 89170-06B10 fitted in?

The airbag control unit 89170-06B10 is fitted in these vehicles: Lexus ES AXZH60 (from 2018); Toyota Camry XV70 (2017-2020) and XV70 Facelift (2020-2024). The list shows which models are known for this unit.

The following models are known:

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

Before you send the unit in, compare the part number on the label with this page. That only confirms that it is the right unit. You should also have the fault memory read out, because only that 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, 89170-06820, 89170-06850, 89170-06880, 89170-06B21.

How does the repair of the 89170-06B10 work?

First have the fault memory read out and the log enclosed with the unit. Then disconnect the battery, remove the control unit and create the repair order online. Next you send the unit in packed, and Airbag24 tests it, replaces defective components, clears stored crash data and runs a function test.

This sequence is mandatory for safety reasons.

Processing at Airbag24 usually takes 3–4 working days, and this time applies only to testing, repairing and checking.

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 89170-06B10 get to Airbag24?

You send the unit to Airbag24 as a parcel, or you book a UPS collection for an extra charge. After the repair your own unit comes back to you by UPS.

The printed repair order goes into the parcel, and the unit is packed shockproof.