Airbag control unit with part number 89170-48680

What does the airbag control unit 89170-48680 do?

The airbag control unit 89170-48680 forms the central control of the SRS restraint system for Toyota. In an impact it evaluates the sensors and determines within milliseconds which airbags and seatbelt pretensioners are triggered.

During operation it checks the system continuously. It indicates any faults found via the airbag warning light in the instrument cluster.

After an accident the control unit records crash data and locks itself. Only the repair lifts this lock.

Why does the control unit 89170-48680 fail?

Stored crash data is the most common cause, even if no airbag was triggered in the accident. A usual diagnostic tool cannot erase it.

Airbag24 removes this data during the repair, so you do not have to take any action on it yourself. The fault may nevertheless have other causes.

Ageing electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes, such as those from a weak battery or a jump start, are possible causes. Which of them applies is only shown by the examination.

How can you tell that the 89170-48680 is defective?

The airbag warning light in the instrument cluster comes on permanently or intermittently when something is wrong with the 89170-48680. There may also be a fault message, a diagnostic tool without a connection, and a fault memory that cannot be cleared.

These are the signs:

• airbag warning light on permanently or intermittently
• fault message in the instrument cluster
• diagnostic tool receives no connection to the control unit
• fault memory cannot be cleared

In a crash, airbags and seatbelt pretensioners may then fail to trigger. Please check the finding promptly.

Which vehicles is the 89170-48680 fitted in?

The control unit 89170-48680 is fitted in these vehicles: Toyota Highlander XU40 (2007-2013).

Below is the overview of the vehicles that match this unit in our stock.

• Toyota Highlander XU40 (2007-2013)

To be sure that the control unit really is defective, have the fault memory read out first. Only then is comparing the part number on the label of the removed unit worthwhile.

For the same vehicles, we also repair control units with the part numbers 89170-48090, 89170-48240.

How does the repair of the 89170-48680 work?

You have the fault memory read out before removal, disconnect the battery, remove the control unit and create a repair order online. Processing at Airbag24 usually takes 3–4 working days.

You attach the record to the unit, then pack it and send it in.

Airbag24 examines the control unit on the test bench, repairs defective components, erases the crash data and carries out a functional test. Afterwards your own 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 89170-48680 get to Airbag24?

You send the control unit 89170-48680 as a parcel or book a UPS collection for an extra charge. After the repair Airbag24 returns it to you by UPS.

The printed repair order goes into the parcel. Pack the unit so that it is shock-resistant.