Airbag control unit with part number 89170-26530

What does the airbag control unit 89170-26530 do?

The airbag control unit 89170-26530 works with the SRS restraint system at Toyota. It processes the signals of the crash sensors, determines in an accident within milliseconds the triggering of airbags and seatbelt pretensioners, and reports faults via the airbag warning light.

The control unit monitors the system continuously while the vehicle is running, and it is connected to the sensors, airbags and seatbelt pretensioners.

If it stores crash data after an accident, it locks itself. This lock ends only with a repair.

Why does the control unit 89170-26530 fail?

Most often the cause is crash data from an accident that remains in the unit even if no airbag has fired; a normal diagnostic tool cannot erase it. Aged electronics, cold solder joints, moisture and corrosion at plug connections, and voltage spikes are also possible.

Airbag24 removes the crash data during the repair; an ordinary diagnostic tool cannot reach it.

The other causes lie in the electronics and their environment. Ageing and cold solder joints weaken the unit, while moisture and corrosion make the contacts unreliable.

Voltage spikes, for example from a weak battery or jump-starting, may also play a role.

How can you tell that the 89170-26530 is defective?

The airbag warning light on the 89170-26530 lights permanently or intermittently, and fault messages appear along with it. A diagnostic tool finds no connection to the control unit, and the fault memory cannot be erased. In an emergency, airbags and seatbelt pretensioners may possibly not deploy.

The airbag warning light in the instrument cluster shows the fault as soon as the system detects it. It is the first sign you notice.

Having the system checked is the sensible next step as soon as one of these indications appears.

Which vehicles is the 89170-26530 fitted in?

The airbag control unit 89170-26530 is fitted in these vehicles: Toyota HiAce H300 (from 2019).

The list refers to Toyota and names the models in which this control unit is fitted.

• Toyota HiAce H300 (from 2019)

If the part number on the label of the removed unit matches this page, you have the correct unit in front of you. Have the fault memory read out in addition, because only this log shows whether the control unit itself is defective or whether a plug 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 89170-26530 work?

First have the fault memory read out and enclose the log. Then disconnect the battery and only then remove the control unit 89170-26530. Next create a repair order online and send the unit off well packed. Processing at Airbag24 usually takes 3–4 working days.

At Airbag24 the unit is checked on the test bench, defective components are replaced, the crash data is erased, and a functional test follows.

Your own unit is then returned. 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 89170-26530 get to Airbag24?

You send the control unit 89170-26530 as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 returns it by UPS.

Put the printed repair order into the parcel and pack the unit shock-proof.