Airbag control unit with part number 89170-02K00

What does the airbag control unit 89170-02K00 do?

The control unit 89170-02K00 coordinates the restraint system (SRS) in Toyota vehicles. It captures the values from the crash sensors, selects within milliseconds the airbags and seatbelt pretensioners to fire, and monitors the system throughout.

As an airbag control unit, it reports faults via the airbag warning light in the instrument cluster.

After an accident it stores crash data and then locks itself.

Why does the control unit 89170-02K00 fail?

The most common reason at the 89170-02K00 is stored crash data, even if no airbag has fired. A normal diagnostic tool cannot clear it. Further causes are aged components, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes.

Crash data arises from the event and sits in the memory of the control unit. The fact that no airbag fired therefore does not mean that nothing was recorded.

Aged components and cold solder joints only show up after prolonged use.

Moisture and corrosion attack the plug connectors, and voltage spikes, for example from a weak battery or a jump-start, place additional strain on the electronics.

How can you tell that the 89170-02K00 is defective?

A defect in the 89170-02K00 shows up as an airbag warning light that stays on permanently or flashes from time to time, as an error message, as a missing connection to the diagnostic tool, and as a fault memory that cannot be cleared. In an emergency, airbags and seatbelt pretensioners may then fail to fire.

The warning light is the visible signal the system gives, regardless of how the vehicle behaves in everyday use.

A diagnostic tool that cannot establish a connection is also a clear reason to have the system checked.

Which vehicles is the 89170-02K00 fitted in?

The 89170-02K00 is fitted in these vehicles: Toyota Corolla E170 (2013-2018); Toyota Auris E180 (2012-2015) and E180 Facelift (2015-2019).

The list below shows the vehicles recorded for this part number.

• Toyota Corolla E170 (2013-2018)
• Toyota Auris E180 (2012-2015)
• Toyota Auris E180 Facelift (2015-2019)

Compare the part number on the label of the removed unit with this page. This only establishes that it is the right unit. Have the fault memory read out beforehand, because only this record shows whether the control unit is defective or a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 222814-101, 89170-02C60, 89170-02C70, 89170-02C80, 89170-02C90, 89170-02J70.

How does the repair of the 89170-02K00 work?

The process begins with reading out the fault memory at the 89170-02K00, and you attach its log. Then disconnect the battery, remove the control unit, create a repair order online and send in the well-packed unit. Processing at Airbag24 usually takes 3–4 working days, during which the unit is checked, components are replaced, crash data is erased and the unit is tested.

The order of the steps serves the safety of the restraint system.

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 89170-02K00 get to Airbag24?

The 89170-02K00 goes to Airbag24 as a parcel, or you book a UPS collection for an extra charge. After the repair, Airbag24 sends the control unit back to you by UPS.

You put the printed repair order into the parcel. Pack the unit to withstand shocks, and it will survive shipping undamaged.