Airbag control unit with part number 89170-26820

What does the airbag control unit 89170-26820 do?

The airbag control unit 89170-26820 controls the restraint system (SRS) of Toyota. It evaluates the crash sensors, decides in a crash within milliseconds whether airbags and seatbelt pretensioners are triggered, and reports faults via the airbag warning light.

During operation the control unit works in the background and continuously checks its sensors and wiring. This keeps the system ready for use without delay in an emergency.

After an accident the unit stores crash data and locks itself. The condition of the system can only be reliably assessed with a diagnostic tool.

Why does the control unit 89170-26820 fail?

The most common cause is stored crash data, even if no airbag has deployed; a standard diagnostic tool cannot clear it. Aged electronic components, cold solder joints, moisture and corrosion on connectors, and voltage spikes are also possible causes.

The crash data remains in the memory of the unit. That it is stored there does not mean that an airbag has deployed.

Aged components and cold solder joints can also disturb the electronics. Voltage spikes, for example from a weak battery or jump-starting, are among the causes as well.

How can you tell that the 89170-26820 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, a fault message appears in the instrument cluster, the diagnostic tool finds no connection to the control unit, or the fault memory cannot be cleared. In an emergency, the airbags and seatbelt pretensioners may then fail to deploy.

The warning light indicates the defect and deserves your attention every time.

If you notice these signs, checking the fault memory is the right next step.

Which vehicles is the 89170-26820 fitted in?

The 89170-26820 is fitted in these vehicles: Toyota HiAce H300 (from 2019). Use these details to check whether your vehicle is one of them.

The vehicles on record for this part number are listed here:

• Toyota HiAce H300 (from 2019)

Compare the part number on the label of the removed unit with this page. This only confirms that it is the correct unit. Also have the fault memory read out beforehand, as only this shows whether the control unit is defective or a connector or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 152100-4560, 89170-42D50.

How does the repair of the 89170-26820 work?

First, have the fault memory read out and enclose the log. Then disconnect the battery, remove the control unit and create the repair order online. After that, send the unit in, well packed.

In the test bench at Airbag24, the unit is checked, defective components are replaced and the stored crash data is cleared. A function test follows, and then your own, repaired unit goes back to you. Processing at Airbag24 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 89170-26820 get to Airbag24?

You send the control unit 89170-26820 as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 sends it back to you by UPS.

Place the printed repair order in the parcel and pack the unit shock-resistant.