Airbag control unit with part number 89170-02C53

What does the airbag control unit 89170-02C53 do?

The airbag control unit 89170-02C53 evaluates the sensors in the vehicle of Toyota and controls the triggers. In an accident it calculates within milliseconds which airbags and seatbelt pretensioners are triggered. It also monitors the entire system. After an accident it stores crash data and locks itself.

If the monitoring detects a fault, the unit reports it via the airbag warning light in the instrument cluster.

Why does the control unit 89170-02C53 fail?

The most common cause is crash data from an accident that is stored in the unit even without an airbag having triggered; an ordinary diagnostic tool cannot remove it. In addition there are ageing electronics, cold solder joints, moisture and corrosion on the plug connections, and voltage spikes from a weak battery or a jump start.

Crash data cannot be removed with ordinary tools, because it is stored in the control unit itself.

Old components and damp contacts can also disturb the electronics.

How can you tell that the 89170-02C53 is defective?

A defect shows itself through the airbag warning light, error messages in the instrument cluster, a missing connection to the diagnostic tool or a fault memory that cannot be cleared. In this case airbags and seatbelt pretensioners may possibly fail to deploy in an emergency.

• Airbag warning light in the instrument cluster lights constantly or intermittently
• Error message in the instrument cluster
• Diagnostic tool receives no connection to the control unit
• Fault memory cannot be cleared

The warning light is the one you will notice first. Take it seriously, because then the system is not working in the state it should be in.

Which vehicles is the 89170-02C53 fitted in?

The airbag control unit 89170-02C53 is fitted in these vehicles: Toyota Matrix E140 (2008-2014). Whether your vehicle is affected can only be roughly estimated from the list.

The vehicles known to us for this number are listed below:

• Toyota Matrix E140 (2008-2014)

Match the part number on the label of the removed unit with this page; that only confirms that it is the right unit. Have the fault memory read out, 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 89170-01060, 89170-01070, 89170-01100.

How does the repair of the 89170-02C53 work?

First read out the fault memory and enclose the log with the parcel. Then disconnect the battery, remove the control unit and create the repair order online; then pack the unit well and send it in. Airbag24 checks it on the test bench, replaces defective components, deletes stored crash data, carries out a functional test and then returns the unit to you.

The sequence is fixed for safety: only after reading out is the battery disconnected, and only then does the control unit come out of the vehicle.

Processing at Airbag24 usually takes 3–4 working days.

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 89170-02C53 get to Airbag24?

You may 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. The printed repair order is enclosed in the parcel.

The control unit belongs in shock-resistant packaging, such as a sturdy box with padding.