Airbag control unit with part number 89170-33270

What does the airbag control unit 89170-33270 do?

The airbag control unit 89170-33270 is the central unit of the restraint system (SRS) for Toyota. It continuously evaluates the signals from the crash sensors, decides in the event of a crash which airbags and seatbelt pretensioners are triggered, and monitors the entire system. It shows faults via the airbag warning light. After a crash it stores crash data and locks itself.

Monitoring covers sensors, wiring and trigger units and runs in the background.

Why does the control unit 89170-33270 fail?

The most common cause is crash data from an earlier accident, even if no airbag was deployed. A normal diagnostic tool cannot erase it. Other possible causes are aged electronic components, cold solder joints, moisture and corrosion on plug connections, and voltage spikes.

Moisture and corrosion attack plug connections, and aged electronic components change their behaviour. Cold solder joints are also among the causes.

Voltage spikes, for example from a weak battery or a jump start, can also damage the electronics.

How can you tell that the 89170-33270 is defective?

A fault shows up as the airbag warning light, an error message in the instrument cluster, no communication with the diagnostic tool, or a fault memory that cannot be cleared. In these cases the airbags and seatbelt pretensioners may not deploy in an accident.

• Airbag warning light in the instrument cluster, permanently or intermittently
• Error message in the instrument cluster
• Diagnostic tool cannot reach the control unit
• Fault memory cannot be cleared

The light reports the fault, so respond to every warning.

Which vehicles is the 89170-33270 fitted in?

The 89170-33270 is fitted in these vehicles: Toyota Camry XV30 Facelift (2004-2006) and XV30 (2001-2004).

The list below shows the vehicles stored for this part number.

• Toyota Camry XV30 Facelift (2004-2006)
• Toyota Camry XV30 (2001-2004)

Compare the part number on the label of the removed unit with this page to make sure it is the right unit. The fault memory, on the other hand, shows whether the control unit itself or a plug or cable is the cause, so have it read out beforehand.

For the same vehicles, we also repair control units with the part numbers 89170-33430, 89170-33470, 89170-33530.

How does the repair of the 89170-33270 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 pack the unit well before sending it in.

Airbag24 checks the unit on the test bench, repairs defective components, erases stored crash data and carries out a function test. Processing usually takes 3–4 working days.

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 89170-33270 get to Airbag24?

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

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