Airbag control unit with part number 89170-02570

What does the airbag control unit 89170-02570 do?

The airbag control unit 89170-02570 evaluates the crash sensor signals in Toyota vehicles and controls the restraint system. In an impact, it decides within fractions of a second which airbags and seatbelt pretensioners are triggered.

Between accidents, the unit monitors the circuits of the system. If it finds a fault, it records it in the fault memory and reports it via the airbag warning light.

After an accident, the control unit secures crash data and then locks itself.

Why does the control unit 89170-02570 fail?

The most common cause is crash data from an accident that remains in the memory, even if no airbag has deployed. A normal diagnostic tool cannot remove it. Other causes are aged components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

The crash data is retained even after events in which the airbags stayed silent. It is therefore a trace of the incident that remains in the unit.

The other causes develop slowly:

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

How can you tell that the 89170-02570 is defective?

A defect shows up as the airbag warning light in the instrument cluster lighting up permanently or intermittently, and as an error message in the instrument cluster. In addition, the diagnostic tool finds no connection to the control unit, and the fault memory cannot be cleared. In an emergency, airbags and seatbelt pretensioners may then fail to deploy.

The airbag warning light is the signal you should watch first. It shows a detected fault right in your field of view while you drive.

Have the system checked promptly. An error message is a warning sign and not a trifle to put off.

Which vehicles is the 89170-02570 fitted in?

The control unit 89170-02570 is fitted in these vehicles: Toyota Auris E150 (2006-2010) and E150 Facelift (2010-2012).

The list shows the vehicles recorded for this part number.

• Toyota Auris E150 (2006-2010)
• Toyota Auris E150 Facelift (2010-2012)

Compare the part number on the label of the removed unit with this page. This only confirms that it is the correct unit. Have the fault memory read out beforehand, because only then does it become clear 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 215537-106, 89170-02560, 89170-0W330, 8924502040.

How does the repair of the 89170-02570 work?

First have the fault memory read out and enclose the log. Then disconnect the battery, remove the control unit, create the repair order online and send the unit in well packed. Checking, repair and function test at Airbag24 usually take 3–4 working days.

Airbag24 checks the unit on the test bench, replaces defective components and erases the stored crash data. A function test follows. Afterwards your own unit 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 89170-02570 get to Airbag24?

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

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