Airbag control unit with part number 89170-02K10

What does the airbag control unit 89170-02K10 do?

The airbag control unit 89170-02K10 is responsible for the restraint system (SRS) of Toyota. It checks the crash sensors, selects the appropriate airbags and seatbelt pretensioners within milliseconds in an accident, and monitors everything constantly. After an accident it stores crash data and locks itself.

If it detects a fault, it reports this via the airbag warning light in the instrument cluster. The warning light is therefore the direct indication of a fault in the system.

Why does the control unit 89170-02K10 fail?

The most common cause in the 89170-02K10 is crash data stored after an accident, even without a triggered airbag. Other causes are ageing electronic components, cold solder joints, moisture, corrosion at plug connections and voltage spikes.

Crash data cannot be erased with a normal diagnostic tool. Airbag24 erases it during the repair, and you do not need to do anything for this.

The possible causes in detail are:

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

How can you tell that the 89170-02K10 is defective?

The airbag warning light in the instrument cluster lights up on the 89170-02K10 either permanently or intermittently, and an error message appears in the instrument cluster. The diagnostic tool gets no connection to the control unit, and the fault memory cannot be cleared.

Typical signs:

• Airbag warning light on permanently or intermittently
• Error message in the instrument cluster
• No connection between the diagnostic tool and the control unit
• Fault memory that cannot be cleared

In that case, airbags and seatbelt pretensioners may fail to trigger in an emergency. Have the warning light checked promptly.

Which vehicles is the 89170-02K10 fitted in?

The control unit 89170-02K10 is fitted in these vehicles: Toyota Corolla E170 (2013-2018).

The vehicle overview follows here:

• Toyota Corolla E170 (2013-2018)

Comparing the part number on the label of the removed unit with this page only ensures that it is the correct unit. Have the fault memory read out beforehand, because only this log 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 89170-02C60, 89170-02C70, 89170-02C80, 89170-02C90, 89170-12280, 89170-12340.

How does the repair of the 89170-02K10 work?

First have the fault memory of the 89170-02K10 read out and enclose the log. Then disconnect the battery, only then remove the control unit, create a repair order online and send the unit in well packed. Processing at Airbag24 usually takes 3–4 working days.

Airbag24 tests the unit on the test bench, renews defective components, erases stored crash data and carries out a functional test. The unit then 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 89170-02K10 get to Airbag24?

You send the control unit 89170-02K10 as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 returns it to you by UPS.

Put the printed repair order into the parcel and pack the unit shockproof.