Airbag control unit with part number 89170-60172

What does the airbag control unit 89170-60172 do?

The control unit 89170-60172 is the central unit of the airbag restraint system in vehicles from Lexus. It evaluates the crash sensors, determines in an accident within milliseconds the triggering of the airbags and seatbelt pretensioners, and monitors the entire system.

It indicates faults with the airbag warning light in the instrument cluster. In this way, drivers recognise that something is wrong in the system.

After an accident, the unit stores crash data and locks itself. The lock is only lifted by the repair.

Why does the control unit 89170-60172 fail?

Stored crash data is the most common cause in the 89170-60172, even if no airbag was triggered in the accident, and a normal diagnostic tool cannot erase it. Other causes include aged electronics, cold solder joints, moisture and corrosion at plug connections, and voltage spikes, for example from a weak battery or a jump start.

If the airbags have not triggered, this does not mean that no crash data was created.

The other causes concern components, solder joints and plug connections and cannot be narrowed down from the outside without a check.

At Airbag24, the crash data is erased during the repair.

How can you tell that the 89170-60172 is defective?

The airbag warning light lights up on the 89170-60172 in the instrument cluster permanently or intermittently. A fault message also appears in the instrument cluster, the diagnostic tool finds no control unit, and the fault memory cannot be cleared. Airbags and seatbelt pretensioners may then possibly not trigger in an emergency.

These warning signs directly affect the protection of the occupants. An inspection should therefore be planned in promptly.

Whether the control unit is defective or a cable is the cause can be seen from the fault memory, which only a read-out reveals.

Which vehicles is the 89170-60172 fitted in?

The 89170-60172 is fitted in these vehicles: Lexus LX UZJ100 (1998-2007).

The following vehicles are recorded for this part number:

• Lexus LX UZJ100 (1998-2007)

You check the part number on the label of the removed unit and compare it with this page. This only tells you that it is the right unit. Have the fault memory read out beforehand, because only this record shows whether the control unit itself or a plug or cable is the cause.

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

How does the repair of the 89170-60172 work?

First have the fault memory read out; the log goes into the parcel. Before removal, disconnect the battery, and then remove the control unit 89170-60172. Finally, create the repair order online. Processing at Airbag24 then usually takes 3–4 working days.

At Airbag24, the unit goes onto the test bench. The team then repairs defective components, removes the crash data and carries out a function test. Afterwards, your own unit returns 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 89170-60172 get to Airbag24?

You send the control unit 89170-60172 as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 sends it back to you by UPS.

Enclose the printed repair order with the parcel and pack the unit shock-proof.