Airbag control unit with part number 89170-26370

What does the airbag control unit 89170-26370 do?

The airbag control unit 89170-26370 coordinates the restraint system (SRS) of Toyota. It processes the readings from the crash sensors, determines within milliseconds in an accident whether airbags and seatbelt pretensioners are triggered, and logs faults.

In everyday use the unit runs unnoticed in the background and checks the system constantly. The airbag warning light in the instrument cluster indicates when it has detected a fault.

After an accident it stores crash data and permanently locks itself against normal operation. This property is the reason why a unit can cause problems after an accident.

Why does the control unit 89170-26370 fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed. Other causes are aged components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Crash data cannot be deleted with a standard diagnostic tool. Airbag24 removes it during the repair.

• aged electronic components
• cold solder joints
• moisture and corrosion at plug connections
• voltage spikes, for example from a weak battery or a jump start

How can you tell that the 89170-26370 is defective?

An airbag warning light in the instrument cluster that stays on permanently or intermittently, a fault message in the instrument cluster, no connection between the diagnostic tool and the control unit, and a fault memory that cannot be cleared indicate the defect.

• airbag warning light on permanently or intermittently
• fault message in the instrument cluster
• no connection between diagnostic tool and control unit
• fault memory cannot be cleared

In this condition, airbags and seatbelt pretensioners may not be able to trigger in an emergency.

Which vehicles is the 89170-26370 fitted in?

The control unit 89170-26370 is fitted in these vehicles: Toyota HiAce H300 (from 2019).

The following models are on record for this part number:

• Toyota HiAce H300 (from 2019)

Compare the part number on the label of the removed unit with this page. That only confirms that the unit matches the page, nothing more. Then have the fault memory read out, because the log shows whether the control unit or a 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 89170-26370 work?

First read out the fault memory and enclose the log. Then disconnect the battery and only then remove the unit. Next create the repair order online and pack the unit well for sending. Processing at Airbag24 usually takes 3–4 working days.

Then pack the unit well and send it in. Airbag24 inspects it on the test bench, repairs defective components, deletes the crash data and carries out a function test.

The 3–4 working days apply to this work at Airbag24 alone. 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 89170-26370 get to Airbag24?

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

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