Airbag control unit with part number 89170-0C260

What does the airbag control unit 89170-0C260 do?

The airbag control unit 89170-0C260 regulates the restraint system (SRS) for Toyota. It checks the crash sensors, decides in a fraction of a second in the event of an accident whether airbags and seatbelt pretensioners are triggered, and keeps the system under observation. Faults are shown via the airbag warning light.

The observation takes place during every journey. Deviations in the signals or in the firing circuits end up in the fault memory.

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

Why does the control unit 89170-0C260 fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed; a normal diagnostic tool cannot remove it. Other causes include aged electronics, cold solder joints, moisture and corrosion at plug connections, and voltage spikes, for example from a weak battery or jump-starting.

Crash data is stored in the control unit after an impact, even if no airbag has fired. A standard diagnostic tool cannot clear it. Airbag24 carries out the deletion during the repair.

Other causes lie in electronics and wiring. Older components and cold solder joints impair the function, and damp or corrosion at plugs disrupt the contact. Voltage spikes, for example from a weak battery or jump-starting, also act on the circuit.

How can you tell that the 89170-0C260 is defective?

A defect in the 89170-0C260 shows up as an airbag warning light that stays on permanently or intermittently, as a fault message in the instrument cluster, as a diagnostic tool without a connection, and as a fault memory that cannot be cleared. In an emergency, airbags and seatbelt pretensioners may then fail to trigger.

The airbag warning light in the instrument cluster is the most obvious sign. It lights up permanently or intermittently as soon as the control unit records a fault.

A fault message in the instrument cluster, a diagnostic tool that cannot establish a connection and a fault memory that cannot be erased also point to a defect. Have these signs clarified promptly, as the restraint systems are then affected.

Which vehicles is the 89170-0C260 fitted in?

The control unit 89170-0C260 is fitted in these vehicles: Toyota Tundra K20 (2000-2006).

The list shows the following vehicles:

• Toyota Tundra K20 (2000-2006)

Comparing the part number on the label of the removed unit with this page only shows whether it is the right unit. It does not explain the cause. Have the fault memory read out beforehand, because only this result shows whether the control unit is defective or whether a plug or a cable is causing the fault.

For the same vehicles, we also repair control units with the part numbers 89170-0C050, 89170-0C060.

How does the repair of the 89170-0C260 work?

First have the fault memory read out and enclose the log with the parcel. Then disconnect the battery, remove the control unit and create a repair order online. At Airbag24, inspection, repair and testing usually take 3–4 working days.

Safety determines the sequence: readout with log, disconnect the battery, and only then remove the unit. Pack the unit well afterwards.

Airbag24 checks the unit on the test bench, repairs defective components and deletes stored crash data. The unit also goes through a function test before it is 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 89170-0C260 get to Airbag24?

You hand over the unit as a parcel or arrange a UPS collection for an extra charge. After the repair, Airbag24 sends it back to you with UPS.

The printed repair order goes into the parcel, and the packaging must be shock-proof.