Airbag control unit with part number 89170-26610

What does the airbag control unit 89170-26610 do?

As the central unit, the airbag control unit 89170-26610 controls the restraint system (SRS) for Toyota. It processes the data from the crash sensors, determines within milliseconds in an accident the triggering of airbags and seatbelt pretensioners, and monitors the entire system continuously.

It reports faults via the airbag warning light in the instrument cluster. The measured values come from the sensors, but the control unit makes the decision on triggering.

If an accident occurs, the unit stores crash data and locks itself. The following sections explain why this can happen and how the defect can be recognised.

Why does the control unit 89170-26610 fail?

Crash data from an earlier accident is the most common cause for the 89170-26610, even if no airbag has fired. In addition, ageing components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes come into question.

Stored crash data remains in place because a normal diagnostic tool cannot remove it. A simple erase is therefore out of the question.

Ageing components and cold solder joints impair the function without necessarily requiring a preceding accident. Moisture and corrosion disturb the contact in plug connections. Voltage spikes, for example from a weak battery or a jump start, put additional strain on the electronics.

How can you tell that the 89170-26610 is defective?

A fault in the 89170-26610 shows up through the airbag warning light, messages in the instrument cluster, a missing contact to the diagnostic tool and a fault memory that cannot be emptied.

Typical signs are:

• Airbag warning light stays on permanently
• Airbag warning light comes on only intermittently
• Error message in the instrument cluster
• Diagnostic tool gets no connection to the control unit
• Fault memory cannot be cleared

In that case, airbags and seatbelt pretensioners may possibly not deploy in an emergency. The finding should be clarified promptly.

Which vehicles is the 89170-26610 fitted in?

The control unit 89170-26610 is fitted in these vehicles: Toyota HiAce H300 (from 2019).

The listing shows the vehicles held in the data for this number.

• Toyota HiAce H300 (from 2019)

Compare the part number on the label of the removed unit with this page; this only ensures that you have the right unit. Also have the fault memory read out beforehand, because only it shows whether the control unit is faulty 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 89170-26610 work?

You read out the fault memory of the 89170-26610 first, enclose the log and then disconnect the battery. After that, remove the control unit, create the repair order online and send the unit in well packed.

The sequence must be observed for safety reasons and must not be swapped.

Airbag24 checks the unit on the test bench, repairs defective components, erases the stored crash data and carries out a function test. Processing usually takes 3–4 working days. Your own unit is then returned 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 89170-26610 get to Airbag24?

You send the control unit 89170-26610 as a parcel or book a UPS collection for an extra charge. Airbag24 returns it by UPS after the repair.

Enclose the printed repair order and pack the control unit shock-resistant.