Airbag control unit with part number 89170-33240

What does the airbag control unit 89170-33240 do?

The airbag control unit 89170-33240 forms the central control of the restraint system (SRS) in Toyota. It processes the signals from the crash sensors, decides in an accident whether airbags and seatbelt pretensioners are triggered, and monitors the entire system. It indicates faults via the airbag warning light.

In an accident only a very brief moment remains for triggering. The evaluation of the sensor data must therefore work correctly at all times.

After an accident the control unit stores crash data and locks itself.

Why does the control unit 89170-33240 fail?

Stored crash data is most often the cause, even if no airbag triggered in the accident. These data cannot be deleted with a standard diagnostic tool. Other causes include aged components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

The crash data is held in the unit's memory until it is removed during a repair. Aged components, cold solder joints and moisture at the plug connections can impair the function just as well, regardless of an accident.

Voltage spikes arise, for example, from a weak battery or jump-starting, and can affect the electronics. Which cause actually applies only becomes clear from the inspection.

How can you tell that the 89170-33240 is defective?

A defect in the 89170-33240 shows up as the airbag warning light in the instrument cluster lighting up permanently or intermittently. In addition, error messages appear, the diagnostic tool finds no connection to the control unit, and the fault memory cannot be cleared.

In an emergency, airbags and seatbelt pretensioners may then possibly fail to deploy. Such a display should therefore be checked promptly.

The warning light makes the condition visible, so take it seriously, even if it lights up only briefly.

Which vehicles is the 89170-33240 fitted in?

The control unit 89170-33240 is fitted in vehicles from Toyota: Toyota Camry XV30 Facelift (2004-2006) and XV30 (2001-2004).

The vehicles are listed clearly here:

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

A comparison of the part number on the label of the removed unit with this page only confirms that it is the correct unit. Whether the control unit is defective or a plug or a cable is the cause is shown only by the read-out fault memory. You should therefore 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 89170-33240 work?

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.

Airbag24 tests the unit on the test bench, replaces defective components, deletes stored crash data and carries out a functional test. Your unit is then returned to you.

Processing at Airbag24 usually takes 3–4 working days. This time relates solely to testing, repairing and checking in the business. 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 89170-33240 get to Airbag24?

You send the control unit 89170-33240 as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 sends it back by UPS.

Enclose the printed repair order, and pack the unit shockproof.