Airbag control unit with part number 89170-78060

What does the airbag control unit 89170-78060 do?

As the airbag control unit 89170-78060 it controls the restraint system (SRS) of Lexus: it evaluates the crash sensors, decides in an accident within milliseconds on the triggering of airbags and seatbelt pretensioners, and monitors the system continuously.

It reports faults via the airbag warning light. After an accident it stores crash data and locks itself.

Why does the control unit 89170-78060 fail?

The most common cause is stored crash data after an accident, even when no airbag has triggered. Aged components, cold solder joints, moisture on plug connections and voltage spikes may also be involved.

Crash data remains in the unit after an accident, even when no airbag has deployed. A normal diagnostic tool cannot clear it; Airbag24 takes care of this during the repair.

Besides the crash data, these further causes come into consideration:

• aged electronic components
• cold solder joints
• moisture and corrosion at plug connections
• voltage spikes, for example with a weak battery or jump-starting

How can you tell that the 89170-78060 is defective?

If the airbag warning light in the instrument cluster stays on permanently or only intermittently, this points to a defect. An error message in the display, a missing connection to the diagnostic tool and a fault memory that cannot be cleared may also be present.

In an emergency, airbags and seatbelt pretensioners may then fail to trigger if the control unit is faulty.

The light coming on briefly when the ignition is switched on is normal. What matters is whether it goes out afterwards.

Which vehicles is the 89170-78060 fitted in?

The assignment applies to the part number 89170-78060. The control unit is fitted in these vehicles: Lexus NX AZ10 (2014-2017) and AZ10 Facelift (2017-2021).

The vehicles stored for this number follow:

• Lexus NX AZ10 (2014-2017)
• Lexus NX AZ10 Facelift (2017-2021)

Compare the part number on the label of the removed unit with this page. This shows that it is the right unit, and nothing more. Have the fault memory read out in advance, because only the log shows whether the control unit is defective or a connector or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 89170-78010.

How does the repair of the 89170-78060 work?

First steps: read out the fault memory and attach the log, disconnect the battery and only then remove the control unit. Then create a repair order online and send the unit well packed.

Airbag24 checks the unit on the test bench, replaces defective components, deletes crash data and carries out a function test. Processing usually takes 3–4 working days, after which your unit goes back 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 89170-78060 get to Airbag24?

Shipping is either by parcel or by UPS collection that you book for an extra charge. Return is by UPS once the repair is complete.

Put the printed repair order in with the parcel, and pack the control unit shock-resistantly.