Airbag control unit with part number 89170-33310

What does the airbag control unit 89170-33310 do?

The airbag control unit 89170-33310 is the central control unit of the restraint system (SRS) for Toyota. It evaluates the crash sensors, decides within milliseconds in the event of an accident on the triggering of airbags and seatbelt pretensioners, and monitors the system continuously. It shows faults via the airbag warning light.

Monitoring also works in the background when the vehicle is parked. The unit checks the connections and stores irregularities in the fault memory.

After an accident it stores crash data and locks itself. The entire evaluation and diagnosis therefore run through this one unit.

Why does the control unit 89170-33310 fail?

Crash data from an accident is the most common cause, even if no airbag was triggered. A normal diagnostic tool cannot delete it, and Airbag24 deletes it during the repair. Other causes include aged components, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes.

Crash data remains in the unit after an accident, even if no airbag fired. The fault therefore stays visible until the unit is repaired.

The other causes concern the electronics in everyday use. Components age, solder joints can go cold, and moisture attacks plug connections. Voltage spikes, for example from a weak battery, put additional strain on the circuits.

How can you tell that the 89170-33310 is defective?

A defect shows up on the airbag warning light, which lights up permanently or intermittently, as a fault message in the instrument cluster, and as a missing connection to the diagnostic tool. A fault memory that cannot be cleared also indicates a defect. In a real emergency, airbags and seatbelt pretensioners may then fail to trigger.

The airbag warning light in the instrument cluster is the most important sign, because it lights up as soon as the system detects a fault. A fault message on the airbag system may also appear in the instrument cluster.

If the diagnostic tool cannot connect to the control unit, or the fault memory cannot be emptied, have the finding checked promptly. The warning light already shows the fault.

Which vehicles is the 89170-33310 fitted in?

The airbag control unit 89170-33310 is fitted in these vehicles: Toyota Camry XV30 Facelift (2004-2006) and XV30 (2001-2004). This information helps you match the removed unit to a car.

The following vehicles are on record for this part number:

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

Two things come before removal. First, compare the part number on the label of the unit with this page, so you can be sure you have the right unit. Second, have the fault memory read out, because only that result shows whether the control unit is defective or whether a plug or a cable is the cause.

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 89170-33310 work?

First have the fault memory read out and enclose the log. Then disconnect the battery and only then remove the control unit. Online, you create a repair order and send the unit in well packed. At Airbag24, testing, repair and functional testing usually take 3–4 working days.

Airbag24 checks the unit on the test bench and repairs defective components. It then deletes the stored crash data and carries out a functional test.

Afterwards, your own unit 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 89170-33310 get to Airbag24?

You send the control unit 89170-33310 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 in the parcel and pack the unit shock-resistant.