Airbag control unit with part number 89170-0F070

What does the airbag control unit 89170-0F070 do?

The airbag control unit 89170-0F070 controls the restraint system (SRS) in Toyota vehicles. It evaluates the sensor signals, decides within milliseconds in a crash whether airbags and seatbelt pretensioners are triggered, and reports faults via the airbag warning light. After an accident it stores crash data and locks itself.

The unit keeps working in the background all the time and checks the connection to sensors, seatbelt pretensioners and airbags.

The lock after an accident is part of the basic function of the unit and is not a sign of a fault.

Why does the control unit 89170-0F070 fail?

On the 89170-0F070, the most common cause is a crash data entry stored after an accident, even if no airbag has deployed; a normal diagnostic tool cannot erase it. Other causes are ageing electronic components, cold solder joints, moisture and corrosion on plug connections, and voltage spikes, for example from a weak battery or jump-starting.

Crash data remains in the unit regardless of how the vehicle continues to run afterwards. It is not a sign of wear but stored content.

The other causes act on the electronics over a longer period. Solder joints become brittle, and moisture penetrates plug connections.

How can you tell that the 89170-0F070 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, and a fault message appears in the instrument cluster. In addition, the diagnostic tool finds no connection to the 89170-0F070, and the fault memory cannot be cleared.

If these signs appear, the airbags and seatbelt pretensioners may not be able to deploy in an emergency. The light shows the finding clearly, so please have the system checked promptly.

Which vehicles is the 89170-0F070 fitted in?

The control unit 89170-0F070 is fitted in these vehicles: Toyota Verso AR10 (2004-2007) and AR10 Facelift (2007-2009).

The vehicles we have on record for this part number are listed here:

• Toyota Verso AR10 (2004-2007)
• Toyota Verso AR10 Facelift (2007-2009)

Comparing the part number on the unit's label with this page only confirms that you have the right unit. Whether the control unit itself is faulty is only shown by the read-out fault memory, because a plug or cable can also be the cause.

For the same vehicles, we also repair control units with the part numbers 89170-0F022, 89170-0F050, 89170-0F080.

How does the repair of the 89170-0F070 work?

For the 89170-0F070, first have the fault memory read out and enclose the log, then disconnect the battery and only then remove the control unit. Next, create a repair order online and send in the well-packed unit. At Airbag24, testing, repair and function test usually take 3–4 working days.

After receipt, Airbag24 examines the control unit, replaces faulty components, deletes the crash data and tests the function. 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 89170-0F070 get to Airbag24?

You send the control unit 89170-0F070 in as a parcel, or book a UPS collection for an extra charge. After the repair, Airbag24 returns it by UPS. Put the printed repair order in the parcel and pack the unit shock-proof.

A stable packaging that absorbs impacts is especially important for transport.