Airbag control unit with part number 89170-04741

What does the airbag control unit 89170-04741 do?

The airbag control unit 89170-04741 coordinates the restraint system (SRS) of Toyota. It checks the sensor signals from a crash, determines within milliseconds which airbags and seatbelt pretensioners to trigger, and reports faults via the airbag warning light.

The control unit runs in the background and monitors the system constantly. After a crash it stores crash data and locks itself.

This lock is only lifted by the repair.

Why does the control unit 89170-04741 fail?

Stored crash data is the most common cause: it remains in the unit even if no airbag has deployed, and it cannot be erased with a normal diagnostic tool. Other possible causes include aged components, cold solder joints, moisture and corrosion on plugs, and voltage spikes.

At Airbag24, this crash data is erased as part of the repair.

Electrical stress such as voltage spikes, for example from a weak battery or jump-starting, as well as ageing electronics, also count among the causes.

How can you tell that the 89170-04741 is defective?

Typical signs are an airbag warning light that stays on permanently or intermittently, and an error message in the instrument cluster.

The diagnostic tool may then be unable to connect to the control unit, and the fault memory cannot be cleared.

In an emergency, airbags and seatbelt pretensioners may not deploy. The light indicates the defect, so it is worth having it checked promptly.

Which vehicles is the 89170-04741 fitted in?

The 89170-04741 was fitted in these vehicles: Toyota Tacoma N300 (2015-2019) and N300 Facelift (2019-2023).

The following models are assigned:

• Toyota Tacoma N300 (2015-2019)
• Toyota Tacoma N300 Facelift (2019-2023)

First check whether the part number on the label of the removed unit matches this page; that only confirms that it is the correct unit. Have the fault memory read out, because only that shows whether the control unit is defective or a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 89170-04080, 89170-04120, 89170-04150, 89170-04570.

How does the repair of the 89170-04741 work?

First have the fault memory read out; the log goes into the package with the unit. Then disconnect the battery and only afterwards remove the 89170-04741, then create the repair order online.

Pack the returned unit well before it is sent. Airbag24 then takes over: the unit is checked on the test bench, defective components are repaired, the crash data is erased, and a function test is carried out.

Processing usually takes 3–4 working days. Your own unit is then sent 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 89170-04741 get to Airbag24?

You send the control unit 89170-04741 as a parcel or book a UPS collection for an extra charge. UPS handles the return after the repair.

Place the printed repair order in the parcel and pack the unit shockproof.