Airbag control unit with part number 89170-07410

What does the airbag control unit 89170-07410 do?

The airbag control unit 89170-07410 controls the restraint system (SRS) in the vehicle of Toyota. It processes the signals from the crash sensors and determines in an accident which airbags and seatbelt pretensioners trigger. Monitoring runs continuously, and faults are reported via the airbag warning light.

The sensors are evaluated without a pause, even when the vehicle is standing still. After an accident the control unit stores crash data and locks itself.

Why does the control unit 89170-07410 fail?

The most frequent cause of the 89170-07410 failing is stored crash data, even without a deployed airbag. A normal diagnostic tool cannot remove it. Additionally there are aged electronic components, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes, for example from a weak battery or a jump-start.

Stored crash data remains in the memory after an accident until it is deliberately erased.

The other causes concern the electronics and their surroundings. Components age, solder joints on the circuit board can lose contact, and moisture or corrosion impair the plug connectors. Voltage spikes from weak batteries or jump-starts also attack the electronics.

How can you tell that the 89170-07410 is defective?

A defect in the 89170-07410 shows up via the airbag warning light in the instrument cluster, which stays on permanently or only intermittently. A fault message also appears in the instrument cluster, and a diagnostic tool gets no connection to the control unit. Airbags and seatbelt pretensioners may then possibly not deploy in an emergency.

A fault memory that cannot be cleared is also among the signs. Whoever notices the light has the fault memory read out promptly.

Only then does it become clear which area of the system is affected, and the workshop can check in a targeted way.

Which vehicles is the 89170-07410 fitted in?

The assignment follows the part number alone. The control unit 89170-07410 is fitted in these vehicles: Toyota Avalon XX50 Facelift (from 2022) and XX50 (2018-2022).

The list names the vehicles for which this part number is stored.

• Toyota Avalon XX50 Facelift (from 2022)
• Toyota Avalon XX50 (2018-2022)

Match the label of the removed unit with this page, so you can be sure you have the right unit. Have the fault memory read out beforehand. Only that finding shows whether the control unit is defective or whether a plug or cable is the cause.

How does the repair of the 89170-07410 work?

First comes the reading out of the fault memory for the 89170-07410; the log belongs to the order. Only then do you disconnect the battery and remove the unit, before you create the repair order online.

You have the fault memory read out before anything on the vehicle is changed. Only after reading out may the battery be disconnected. You then remove the control unit and pack it well.

At Airbag24 the unit is examined on the test bench, defective components are replaced, stored crash data is erased and a function test is carried out. Processing at Airbag24 usually takes 3–4 working days.

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 89170-07410 get to Airbag24?

You can send the control unit 89170-07410 in as a parcel or have it collected by UPS for an extra charge. The return after the repair runs via UPS. Put the printed repair order in the parcel and pack the unit shock-resistantly.

A shock-resistant box with padding material protects the sensitive circuit board during transport.