Airbag control unit with part number 89170-07220

What does the airbag control unit 89170-07220 do?

The airbag control unit 89170-07220 is the central control unit of the restraint system (SRS) of Toyota. It evaluates the signals from the crash sensors, decides within milliseconds during an accident which airbags and seatbelt pretensioners are triggered, and reports faults via the airbag warning light.

The unit works in the background and stays active while you drive. After an accident it stores crash data and locks itself.

Why does the control unit 89170-07220 fail?

The most common cause: crash data stored after an accident, even if no airbag was triggered. A normal diagnostic tool cannot erase it. Aged electronic components, cold solder joints, moisture and corrosion on plug connections, and voltage peaks also play a role.

The data is stored as soon as the unit detects an accident. Whether an airbag is triggered makes no difference to the entry.

Other causes lie in the electronics. Components age, solder joints can go cold, and moisture or corrosion affect plug connections. Voltage peaks, for example from a weak battery or a jump start, can also damage the unit.

How can you tell that the 89170-07220 is defective?

The airbag warning light in the instrument cluster stays on permanently or intermittently, an error message appears in the instrument cluster, the diagnostic tool cannot connect to the control unit, and the fault memory cannot be cleared. In an emergency, airbags and seatbelt pretensioners may then fail to trigger.

• The airbag warning light stays on or keeps lighting up.
• An error message appears in the instrument cluster.
• The diagnostic tool does not connect to the control unit.
• The fault memory remains, even after an attempt to clear it.

If you notice any of these signs, have the system checked promptly.

Which vehicles is the 89170-07220 fitted in?

Checking the list before you send anything in is worthwhile. The airbag control unit 89170-07220 is fitted in these vehicles: Toyota Avalon XX30 1st Facelift (2008-2010), XX30 (2005-2007) and XX30 2nd Facelift (2010-2012).

These vehicles are recorded for this part number:

• Toyota Avalon XX30 1st Facelift (2008-2010)
• Toyota Avalon XX30 (2005-2007)
• Toyota Avalon XX30 2nd Facelift (2010-2012)

Compare the part number on the label of the removed unit with this page beforehand. This only shows that it is the right unit. Also have the fault memory read out, because only that result shows whether the control unit itself is defective or whether a connector or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 89170-07200, 89170-07221, 89170-07230, 89170-07240.

How does the repair of the 89170-07220 work?

First have the fault memory read out and attach the log, then disconnect the battery and only then remove the control unit. Next, create a repair order online and send the unit in, well packed. Processing at Airbag24 usually takes 3–4 working days.

At Airbag24 the unit is checked on the test bench, defective components are repaired, stored crash data is erased and a function test is carried out. 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 89170-07220 get to Airbag24?

You send the unit as a parcel, or arrange a UPS collection for an extra charge. Airbag24 returns it by UPS after the repair.

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