Airbag control unit with part number 89170-52080

What does the airbag control unit 89170-52080 do?

The airbag control unit 89170-52080 is the central control unit of the SRS restraint system of Toyota. It processes the signals from the crash sensors, determines in an accident whether airbags and seatbelt pretensioners are triggered, and monitors the system during operation.

Faults are reported in the instrument cluster as soon as the system detects them. The decision in an emergency is made within a very short time.

If the unit registers an accident, it writes crash data to memory and locks itself afterwards.

Why does the control unit 89170-52080 fail?

The most common cause is crash data that remains in memory after an accident, even if no airbag has deployed. A normal diagnostic tool cannot delete it. Further causes are ageing components, cold solder joints, moisture and corrosion on connectors, and voltage spikes.

The crash data belongs to the unit and stays stored there, even if the vehicle looks undamaged. Airbag24 deletes it during the repair of the 89170-52080.

• ageing electronic components
• cold solder joints
• moisture and corrosion on connectors
• voltage spikes, for example from a weak battery or a jump start

These points can only be narrowed down by reading out and checking the unit.

How can you tell that the 89170-52080 is defective?

The airbag warning light in the instrument cluster indicates the defect by staying on permanently or intermittently. A fault message in the instrument cluster, no connection to the diagnostic tool and a fault memory that cannot be cleared also show the defect.

As long as these signs are present, airbags and seatbelt pretensioners may fail to deploy in an emergency. Follow up on the fault promptly.

The lamp is the clear indication that the system has detected something. You do not have to wait for a measurement or test to see it.

Which vehicles is the 89170-52080 fitted in?

The control unit 89170-52080 is fitted in these vehicles: Toyota Echo XP10 (1999-2002) and XP10 Facelift (2002-2005).

The vehicles for this part number are listed below.

• Toyota Echo XP10 (1999-2002)
• Toyota Echo XP10 Facelift (2002-2005)

Comparing the part number on the label of your removed unit with this page ensures that it is the correct unit. This comparison does nothing more.

Have the fault memory read out before removing the control unit. Only this log shows whether the control unit is defective or whether a connector or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 89170-52050, 89170-52310-93C56.

How does the repair of the 89170-52080 work?

Processing at Airbag24 usually takes 3–4 working days and includes a check on the test bench, replacement of defective components, deletion of crash data and a function test.

First have the fault memory read out and attach the log to the unit. Then disconnect the battery. Only then remove the control unit and create the repair order online. Pack the unit well and send it in.

Your own 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 89170-52080 get to Airbag24?

You send the unit as a parcel or book a UPS collection for an extra charge. Airbag24 returns the repaired unit to you by UPS.

Enclose the printed repair order in the parcel and pack the unit shockproof.