Airbag control unit with part number 89170-F4260

What does the airbag control unit 89170-F4260 do?

The unit 89170-F4260 is the airbag control unit for Toyota and forms the centre of the restraint system (SRS). It processes the signals from the crash sensors, decides in an accident whether airbags and seatbelt pretensioners are triggered, and monitors the system continuously.

It reports faults via the airbag warning light in the instrument cluster.

After an accident, it stores crash data and then locks itself.

Why does the control unit 89170-F4260 fail?

The most common cause with the 89170-F4260 is crash data from an accident, even if no airbag has deployed. Other possible causes include aged components, cold solder joints, moisture at plug connectors and voltage spikes.

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

Crash data cannot be erased with a commercially available diagnostic tool; Airbag24 removes it during the repair.

The fault memory shows which cause applies in an individual case.

How can you tell that the 89170-F4260 is defective?

If the airbag warning light on the 89170-F4260 lights up continuously or intermittently, a fault is stored in the system. An error message also appears in the instrument cluster, and the diagnostic tool cannot find the control unit.

In that case, airbags and seatbelt pretensioners may not deploy in an emergency.

A fault memory that cannot be cleared is a further warning sign.

Which vehicles is the 89170-F4260 fitted in?

The control unit 89170-F4260 is fitted in these vehicles: Toyota C-HR NGX10 Facelift (2019-2023). Comparing the number on the unit with this page ensures you remove the correct one.

The vehicles at a glance:

• Toyota C-HR NGX10 Facelift (2019-2023)

Have the fault memory read out in advance. Only this result shows whether the control unit is faulty or whether a plug or a cable is the cause. Compare the label with this page as well; that only confirms the correct unit.

For the same vehicles, we also repair control units with the part numbers 89170-F4210, 8917010110.

How does the repair of the 89170-F4260 work?

First have the fault memory read out, and enclose the log with the unit. Then disconnect the battery and remove the control unit 89170-F4260. Finally, create the repair order online and send in the unit.

At the test bench, Airbag24 inspects the unit, repairs defective components, clears the stored crash data and carries out a function test. Processing at Airbag24 usually takes 3–4 working days. You then receive your own, repaired unit back.

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-F4260 get to Airbag24?

You send the control unit 89170-F4260 as a parcel, or book UPS collection for an extra charge. After the repair, UPS returns it to you.

Pack the unit shockproof and enclose the printed repair order.