Airbag control unit with part number 89170-02N80

What does the airbag control unit 89170-02N80 do?

The airbag control unit 89170-02N80 evaluates the crash sensors and decides in an accident which airbags and seatbelt pretensioners are triggered. It is the central control unit of the SRS for Toyota.

During operation it checks the system for faults and reports them via the airbag warning light.

After an accident it stores crash data and locks itself; only the repair lifts this again.

Why does the control unit 89170-02N80 fail?

Most often the cause is crash data from an accident, even without a triggered airbag, which cannot be erased with ordinary diagnostic tools. In addition, the control unit 89170-02N80 may suffer from ageing electronic components, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes.

Only during a repair are these entries removed from the memory.

Voltage spikes occur, for example, with a weak battery or when jump-starting. Moisture and corrosion attack the contacts, while cold solder joints can disturb the connection.

How can you tell that the 89170-02N80 is defective?

A defect on the 89170-02N80 shows up in the airbag warning light, which is lit permanently or intermittently, in an error message in the instrument cluster, in a missing connection to the diagnostic tool or in a fault memory that cannot be cleared.

If the fault memory remains, this indicates a fault that must be examined further.

In an emergency, the airbags and seatbelt pretensioners may possibly not trigger in the event of a fault.

Which vehicles is the 89170-02N80 fitted in?

The 89170-02N80 is fitted in these vehicles: Toyota Corolla E210 (2018-2022) and E210 Facelift (from 2022).

The vehicles on record for this part number are listed here.

• Toyota Corolla E210 (2018-2022)
• Toyota Corolla E210 Facelift (from 2022)

Comparing the part number on the label of the removed unit with this page shows that you have the correct unit. Having the fault memory read out beforehand shows whether the control unit is defective or a plug or cable is causing the fault.

For the same vehicles, we also repair control units with the part numbers 89170-02N50, 89170-02T10, 89170-02W80, 89170-0F150.

How does the repair of the 89170-02N80 work?

First have the fault memory read out, then disconnect the battery and only then remove the control unit. Afterwards create a repair order online and send in the unit. Processing the repair of the 89170-02N80 at Airbag24 usually takes 3–4 working days.

The sequence protects you during work on the vehicle, because the battery must be disconnected before removal.

On the test bench Airbag24 checks the unit, repairs the defective components, erases the crash data and carries out a function test. Afterwards your own unit is sent 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 89170-02N80 get to Airbag24?

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

Put the printed repair order in the parcel and pack the control unit shock-resistant.