Airbag control unit with part number 89170-0C250

What does the airbag control unit 89170-0C250 do?

The airbag control unit 89170-0C250 is the central control unit of the SRS system of Toyota. It processes the signals from the crash sensors and within milliseconds decides on airbags and seatbelt pretensioners in a crash.

The system is monitored permanently by the unit, and faults appear on the airbag warning light in the instrument cluster.

After a crash the unit stores crash data and locks itself.

Why does the control unit 89170-0C250 fail?

Crash data from an earlier accident is considered the most common cause of the 89170-0C250, even if no airbag fired. An off-the-shelf diagnostic tool cannot erase it. Ageing, cold solder joints, moisture and voltage spikes are also possible.

Aged components and cold solder joints can affect the electronics.

Moisture and corrosion on plug connectors likewise lead to faults, and voltage spikes, for example from a weak battery or a jump start, load the circuit.

Repair at Airbag24 includes erasing the crash data. Which cause applies in the individual case only the check will show.

How can you tell that the 89170-0C250 is defective?

A defect in the 89170-0C250 shows up on the airbag warning light in the instrument cluster, on fault messages in the instrument cluster and in problems when reading out. In an emergency, airbags and seatbelt pretensioners may then not fire.

The signs in detail:

• warning light permanently on
• warning light coming on intermittently
• messages in the instrument cluster
• no contact between diagnostic tool and control unit
• fault memory remains

The condition can therefore be read from the light.

Which vehicles is the 89170-0C250 fitted in?

The control unit 89170-0C250 is fitted in these vehicles: Toyota Tundra K20 (2000-2006). The information covers the models known for this number.

The known vehicles:

• Toyota Tundra K20 (2000-2006)

Comparing the part number on the label with this page shows that the unit is the right one. The comparison says nothing more. So have the fault memory read out beforehand, because only that shows whether the control unit is defective or a plug or a cable is the cause.

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

How does the repair of the 89170-0C250 work?

First have the fault memory read out, then disconnect the battery and only then remove the control unit 89170-0C250. Afterwards create a repair order online. Processing at Airbag24 is usually scheduled at 3–4 working days.

Pack the unit well and send it in; the log is enclosed.

Airbag24 checks the control unit on the test bench, replaces defective components, erases the crash data and performs 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 89170-0C250 get to Airbag24?

Either you send the control unit 89170-0C250 to Airbag24 as a parcel, or you book a UPS collection for an extra charge. The return after the repair also runs via UPS.

Print out the repair order and put it in the parcel. Pack the unit shock-proof.