Airbag control unit with part number 89170-0E280

What does the airbag control unit 89170-0E280 do?

The airbag control unit 89170-0E280 coordinates the restraint system (SRS) for Toyota as the central control unit. In an accident, it evaluates the signals from the crash sensors and decides within milliseconds on the triggering of airbags and seatbelt pretensioners.

During operation, the unit checks all components of the system continuously. If it finds a fault, the airbag warning light in the instrument cluster lights up.

After an accident, the control unit stores crash data and locks itself. The following sections describe why this happens and how you should proceed.

Why does the control unit 89170-0E280 fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed; a normal diagnostic tool cannot erase this data. Other causes we name are aged electronic components, cold solder joints, moisture and corrosion on plug connections, and voltage spikes.

An airbag deployment is not a prerequisite for this. Therefore have the fault memory read out in every case.

The other causes in overview:

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

How can you tell that the 89170-0E280 is defective?

A defect shows up as the airbag warning light in the instrument cluster lighting up permanently or intermittently, and as fault messages in the instrument cluster. In addition, the diagnostic tool has no connection to the control unit, or the fault memory cannot be cleared.

Anyone who watches the warning light will notice a defect early. A fault message in the instrument cluster is also a clear sign that the system should be checked.

In an emergency, airbags and seatbelt pretensioners may then fail to deploy. Therefore have the system checked promptly.

Which vehicles is the 89170-0E280 fitted in?

The control unit 89170-0E280 is fitted in these vehicles: Toyota Highlander XU70 (from 2019).

Below you will find the list of vehicles stored for this control unit. Compare it with your own vehicle.

• Toyota Highlander XU70 (from 2019)

Compare the part number on the label of the removed unit with this page, then you know that it is the right unit. Have the fault memory read out beforehand, because this result alone 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 89170-0E690.

How does the repair of the 89170-0E280 work?

First have the fault memory read out and attach the log. Then disconnect the battery and only afterwards remove the control unit. Next, create a repair order online and send in the unit well packed.

For testing, repairing and checking, Airbag24 usually needs 3–4 working days, after which the unit is 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 89170-0E280 get to Airbag24?

You send the control unit 89170-0E280 as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 sends the unit back by UPS.

Put the printed repair order into the parcel, and pack the unit shock-proof.