Airbag control unit with part number 89170-33511

What does the airbag control unit 89170-33511 do?

The airbag control unit 89170-33511 is the central control unit of the restraint system (SRS) for Toyota. It evaluates the signals from the crash sensors, decides within milliseconds in an accident which airbags and seatbelt pretensioners to trigger, and monitors the system continuously.

The evaluation runs in the background throughout the journey. Sensors, wiring and trigger circuits are checked continuously in the process, so that faults are noticed early.

If the unit detects a fault, it stores it in the fault memory and reports it via the airbag warning light in the instrument cluster. After an accident it also stores crash data and locks itself.

Why does the control unit 89170-33511 fail?

Most often the cause is crash data stored after an accident, even if no airbag was triggered. A normal diagnostic tool cannot erase it. Other causes are aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes, for example from a weak battery or a jump start.

The crash data remains in the unit after the accident, and a normal diagnostic tool cannot remove it. Airbag24 erases it during the repair.

Over years, heat, vibration and moisture act on components and contacts. This leads to aged electronics and corrosion; cold solder joints can also occur. Voltage spikes, by contrast, load the electronics briefly.

How can you tell that the 89170-33511 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, a fault message appears in the instrument cluster, and the diagnostic tool gets no connection to the control unit. In addition, the fault memory cannot be cleared, and airbags and seatbelt pretensioners may possibly not trigger in an emergency.

The warning light is the clearest indication that a fault has been detected. Anyone who sees it should have the fault memory read out promptly and decide on the next steps afterwards.

If no connection is established during the read-out, the wiring routing may also be the cause. Only the check of the fault memory will clarify this question.

Which vehicles is the 89170-33511 fitted in?

The control unit 89170-33511 is fitted in these vehicles: Toyota Camry XV40 (2006-2011).

The vehicles are listed individually here:

• Toyota Camry XV40 (2006-2011)

Compare the part number on the label of the removed unit with this page. In this way you make sure you have the right unit in front of you. Have the fault memory read out beforehand, because only this result shows whether the control unit is defective or whether a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 89170-06A40.

How does the repair of the 89170-33511 work?

First have the fault memory read out and enclose the log. Then disconnect the battery and only then remove the control unit. Afterwards create a repair order online and send in the well-packed unit. The processing at Airbag24 usually takes 3–4 working days.

Airbag24 checks the unit on the test bench, repairs defective components, erases stored crash data and carries out a function test. Your own unit then goes back 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 89170-33511 get to Airbag24?

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

Put the printed repair order into the parcel and pack the control unit shockproof.