Airbag control unit with part number 89170-60050

What does the airbag control unit 89170-60050 do?

The airbag control unit 89170-60050 is the central control unit of the restraint system (SRS) for Toyota and Lexus. It processes the signals from the crash sensors and, in an accident, decides within milliseconds which airbags and seatbelt pretensioners are triggered.

The unit monitors the entire system continuously and reports faults to the airbag warning light in the instrument cluster. In this way you notice early when something in the system is not right.

After an accident, it stores crash data and locks itself. The next section explains the possible causes.

Why does the control unit 89170-60050 fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed; a normal diagnostic tool cannot erase it. Other possible causes include aged electronic components, cold solder joints, moisture and corrosion on plug connections, and voltage spikes.

Stored crash data is no indication that an airbag has deployed. It remains in memory even if the vehicle was driven on after the accident without any visible abnormality.

Aged components, cold solder joints and corrosion on plug connections disturb the electronics over time. Voltage spikes arise, for example, from a weak battery or when starting with a jump start.

How can you tell that the 89170-60050 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, and a fault message appears in the instrument cluster. The diagnostic tool finds no connection to the control unit, or the fault memory cannot be cleared.

The warning light is the most important warning sign you can perceive in the vehicle yourself. It reports a fault as soon as the system detects it, and it stays on when a defect persists. A fault message in the instrument cluster confirms the finding.

In an emergency, airbags and seatbelt pretensioners may then fail to deploy. Therefore have the system checked promptly.

Which vehicles is the 89170-60050 fitted in?

The control unit 89170-60050 is fitted in these vehicles: Toyota Land Cruiser J100 (1998-2007); Lexus LX UZJ100 (1998-2007).

The following list names the vehicles for which we hold this unit in our data.

• Toyota Land Cruiser J100 (1998-2007)
• Lexus LX UZJ100 (1998-2007)

A comparison of the part number on the label of the removed unit with this page only tells you that it is the right unit. Have the fault memory read out beforehand, because only this log shows whether the control unit is defective or whether a connector or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 89170-60150, 89170-60160, 89170-60220, 89170-60330, 89170-60540.

How does the repair of the 89170-60050 work?

First have the fault memory read out and attach the log. Then disconnect the battery, remove the control unit and create a repair order online. Afterwards, pack the unit well and send it in.

Airbag24 checks the unit on the test bench, replaces defective components, erases stored crash data and carries out a function test. Processing at Airbag24 usually takes 3–4 working days, after which the unit is returned 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 89170-60050 get to Airbag24?

You send the control unit 89170-60050 as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 returns it by UPS.

Put the printed repair order into the parcel and pack the unit shock-proof.