Airbag control unit with part number 89170-0R070

What does the airbag control unit 89170-0R070 do?

The airbag control unit 89170-0R070 works as the central control unit in the restraint system (SRS) of Toyota. In a crash it evaluates the crash sensors and decides within milliseconds on triggering the airbags and seatbelt pretensioners. In normal operation it monitors the system continuously.

It stores any faults it finds and displays them via the airbag warning light in the instrument cluster. After a crash, it also stores crash data and locks itself, and only the repair lifts this lock.

Why does the control unit 89170-0R070 fail?

The most common cause is stored crash data, even if no airbag has deployed. Other causes are aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

• Aged electronic components
• Cold solder joints
• Moisture and corrosion at plug connections
• Voltage spikes, for example from a weak battery or jump-starting

Crash data cannot be erased with a normal diagnostic tool. Airbag24 removes it during the repair. Which of the other causes applies is shown by the check.

How can you tell that the 89170-0R070 is defective?

The airbag warning light in the instrument cluster lights up on the 89170-0R070 permanently or intermittently, and in addition the instrument cluster shows a fault message. The diagnostic tool then finds no connection to the control unit, and the fault memory cannot be cleared.

As long as these signs persist, airbags and seatbelt pretensioners may possibly fail to trigger in an emergency. The light is therefore a clear indication, and please take this indication seriously.

Which vehicles is the 89170-0R070 fitted in?

The airbag control unit 89170-0R070 is fitted in these vehicles: Toyota RAV4 XA50 (from 2018).

Here is the list of the vehicles assigned:

• Toyota RAV4 XA50 (from 2018)

Compare the part number on the label with this page. This only confirms that it is the right unit. Also have the fault memory read out, because 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 150800-4431, 152100-0262, 152100-4560, 89170-42400, 89170-42870, 89170-42A60.

How does the repair of the 89170-0R070 work?

First have the fault memory read out and enclose the log. Then disconnect the battery and only then remove the control unit 89170-0R070. Next, create a repair order online and send in the well-packed unit. At Airbag24, testing, repairing and checking take 3–4 working days as a rule.

Airbag24 checks the unit on the test bench, repairs defective components, erases the crash data and carries out a function test. Afterwards, you receive your own, repaired unit back.

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 89170-0R070 get to Airbag24?

You send the control unit 89170-0R070 in as a parcel, or book a UPS collection for an extra charge. After the repair, Airbag24 sends it back by UPS.

Place the printed repair order in the parcel and pack the unit shock-proof.