Airbag control unit with part number 89170-62050

What does the airbag control unit 89170-62050 do?

The airbag control unit 89170-62050 is the central control unit of the restraint system in Toyota. It checks the signals from the crash sensors, determines in an accident which airbags and seatbelt pretensioners trigger, and monitors the system continuously.

If it detects a fault, it shows this via the airbag warning light in the instrument cluster. The light is therefore the most important signal of the system.

After an accident, the control unit stores crash data and locks itself.

Why does the control unit 89170-62050 fail?

The most common cause lies in crash data stored after an accident, even if no airbag has deployed. Further causes are ageing electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Crash data cannot be erased with a standard diagnostic tool. Airbag24 erases it during the repair.

The other causes concern the electronics and their connections. Components age, solder joints can go cold, and moisture or corrosion on plugs disturbs the connection. Voltage spikes, for example from a weak battery or a jump start, can also damage the unit.

How can you tell that the 89170-62050 is defective?

A defect in the 89170-62050 shows up as the airbag warning light, which stays on permanently or intermittently, as an error message in the instrument cluster, as a diagnostic tool without connection, or as a fault memory that cannot be cleared.

If the light is on, airbags and seatbelt pretensioners may not deploy in an emergency. The light going out again does not necessarily mean that the fault has been fixed.

Which vehicles is the 89170-62050 fitted in?

The control unit 89170-62050 is fitted in these vehicles: Toyota Mirai JPD10 (2014-2020).

The list shows the vehicles in which this unit was installed.

• Toyota Mirai JPD10 (2014-2020)

On the one hand, compare the part number on the label of the removed unit with this page. This only ensures that it is the right unit. On the other hand, have the fault memory read out beforehand, because only that 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 89170-62020, 89170-62100.

How does the repair of the 89170-62050 work?

Airbag24 checks the control unit 89170-62050 on the test bench, repairs defective components, erases the crash data and carries out a function test. Processing usually takes 3–4 working days.

Before sending, read out the fault memory and enclose the log. Then disconnect the battery and only afterwards remove the unit. Then create a repair order online and pack the unit well.

These 3–4 working days apply only to testing, repairing and checking at Airbag24.

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 89170-62050 get to Airbag24?

You send the control unit 89170-62050 to Airbag24 as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 returns it to you by UPS.

The printed repair order goes into the parcel, and the unit must be packed in a shock-proof way.