Airbag control unit with part number 89170-02K80

What does the airbag control unit 89170-02K80 do?

The airbag control unit 89170-02K80 controls the restraint system (SRS) of Toyota. It evaluates the signals from the crash sensors and, in an accident, decides within milliseconds which airbags and seatbelt pretensioners are triggered.

In addition, it monitors the system continuously. If it detects a fault, it reports it via the airbag warning light in the instrument cluster.

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

Why does the control unit 89170-02K80 fail?

The most common cause is crash data stored after an accident, even if no airbag was triggered. Other possible causes are aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

A normal diagnostic tool cannot delete crash data. Airbag24 deletes it during the repair, and the inspection on the test bench shows which other cause applies in the individual case.

Voltage spikes arise, for example, from a weak battery or a jump start. They are among the causes that must be ruled out for every control unit before a repair begins.

How can you tell that the 89170-02K80 is defective?

A defect shows up at the airbag warning light in the instrument cluster, which lights up permanently or intermittently. Also possible are an error message in the instrument cluster, a missing connection to the diagnostic tool and a fault memory that cannot be cleared.

These signs occur singly or together:

• The airbag warning light stays on permanently.
• The airbag warning light lights up only intermittently.
• An error message appears in the instrument cluster.
• The diagnostic tool cannot establish a connection to the control unit.
• The fault memory cannot be cleared.

With such signs, airbags and seatbelt pretensioners may not trigger in an emergency. Therefore have the display checked promptly.

Which vehicles is the 89170-02K80 fitted in?

The airbag control unit 89170-02K80 is fitted in these vehicles: Toyota Corolla E170 (2013-2018).

Here is the overview:

• Toyota Corolla E170 (2013-2018)

Compare the part number on the label of the removed unit with this page. This only ensures that it is the correct unit. Also have the fault memory read out beforehand: only this result shows whether the control unit is defective or whether a plug or a cable is the cause.

For the same vehicles, we also repair control units with the part numbers 89170-02C60, 89170-02C70, 89170-02C80, 89170-02C90, 89170-12280, 89170-12340.

How does the repair of the 89170-02K80 work?

First have the fault memory read out and attach the log. Then disconnect the battery and remove the control unit. Afterwards create a repair order online and send in the well-packed unit.

Airbag24 checks the unit on the test bench, repairs defective components, deletes the crash data and carries out a function test. The processing time at Airbag24 is usually 3–4 working days; this time relates only to checking, repairing and testing at Airbag24. The unit is then returned 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 89170-02K80 get to Airbag24?

You send the 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.