Airbag control unit with part number 89170-26350

What does the airbag control unit 89170-26350 do?

The airbag control unit 89170-26350 is the control centre of the restraint system (SRS) at Toyota. It reads the signals from the crash sensors, decides in an accident within fractions of a second which airbags and seatbelt pretensioners are triggered, and monitors the system without interruption.

The unit reports faults via the airbag warning light, which is located in the instrument cluster. This display serves as a warning that something is wrong in the restraint system.

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

Why does the control unit 89170-26350 fail?

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

Crash data cannot be erased with a normal diagnostic tool. Airbag24 clears it as part of the repair.

The other causes concern mainly the electronics. Components age over time, solder joints can go cold, and moisture or corrosion at the plugs disturbs the connection.

Voltage spikes arise, for example, from a weak battery or when starting with a jump start, and they stress the unit.

How can you tell that the 89170-26350 is defective?

A defect in the 89170-26350 shows itself through several signs at once. These include the airbag warning light, an error message, a diagnostic tool without a connection and a fault memory that cannot be cleared.

• The airbag warning light in the instrument cluster lights up.
• An error message appears in the instrument cluster.
• The diagnostic tool cannot find the control unit.
• The fault memory cannot be cleared.

If the light is on, airbags and seatbelt pretensioners may not fire in an emergency. That the light goes out after a while does not necessarily mean the fault has been rectified.

Which vehicles is the 89170-26350 fitted in?

The 89170-26350 is fitted in these vehicles: Toyota HiAce H300 (from 2019).

The list shows the vehicles in which this control unit has been installed.

• 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, because only this log shows whether the control unit or a plug or a cable is affected.

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

How does the repair of the 89170-26350 work?

First read out the fault memory and enclose the log. Then disconnect the battery and only then remove the control unit 89170-26350. Afterwards create a repair order online and pack the unit carefully for sending.

At Airbag24 the unit is checked on the test bench, defective components are replaced, stored crash data is deleted, and a function test is carried out. After that the unit goes back to you.

Processing at Airbag24 takes 3–4 working days as a rule. This period covers only the work at Airbag24.

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 89170-26350 get to Airbag24?

You send the control unit 89170-26350 as a parcel, or book a UPS collection for an extra charge. After the repair, Airbag24 sends it back to you by UPS.

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