Airbag control unit with part number 89170-35190

What does the airbag control unit 89170-35190 do?

The airbag control unit 89170-35190 coordinates the restraint system (SRS) of Toyota. It reads the crash sensors, evaluates their signals within milliseconds and determines which airbags and seatbelt pretensioners are triggered.

It also monitors the system continuously and reports faults via the airbag warning light. After an accident, it stores crash data and locks itself.

This monitoring is precisely what makes the unit the centre of the vehicle's safety electronics.

Why does the control unit 89170-35190 fail?

The most common cause is crash data stored after an accident, even if no airbag was triggered; standard diagnostic tools cannot delete this data. Further triggers are aged components, cold solder joints, moisture or corrosion at plug connections, and voltage spikes.

Crash data leaves traces even when the airbags remain untouched. Airbag24 deletes it as part of the repair.

The other causes are technical in nature. Electronics age, solder joints can stay cold, and moisture causes corrosion on contacts. Voltage spikes, for example from a weak battery or when connected to a jump start, additionally stress the circuit.

How can you tell that the 89170-35190 is defective?

If the airbag warning light in the instrument cluster stays on permanently or only intermittently, there is a fault. Added to this are an error message in the instrument cluster, no connection between the diagnostic tool and the 89170-35190, and a fault memory that cannot be cleared.

While the fault persists, airbags and seatbelt pretensioners may not deploy in an emergency. The light is therefore not a minor matter, but a prompt to have the system checked.

Which vehicles is the 89170-35190 fitted in?

The airbag control unit 89170-35190 is a component for Toyota vehicles. It is fitted in these vehicles: Toyota 4Runner N210 (2002-2005) and N210 Facelift (2005-2009).

The assignment in detail:

• Toyota 4Runner N210 (2002-2005)
• Toyota 4Runner N210 Facelift (2005-2009)

Compare the part number on the label of the removed unit with this page. This only ensures that it is the right unit. Also have the fault memory read out beforehand, because only the 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 89170-35210.

How does the repair of the 89170-35190 work?

Processing at Airbag24 usually takes 3–4 working days. During this time, the 89170-35190 is checked, repaired and tested before it is returned.

First have the fault memory read out and attach the log. Then disconnect the battery; only after that do you remove the control unit from the vehicle. Next, create the repair order online and pack the unit carefully before sending it in.

Airbag24 replaces defective components, deletes stored crash data and carries out a function test. Only then does your own unit go back 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 89170-35190 get to Airbag24?

You send the control unit 89170-35190 as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 returns it by UPS.

Enclose the printed repair order and pack the unit so that it is shock-resistant.