Airbag control unit with part number 89170-30F80

What does the airbag control unit 89170-30F80 do?

The unit 89170-30F80 is an airbag control unit within the restraint system (SRS) of Lexus. It evaluates the signals from the crash sensors and, in the event of an accident, decides within milliseconds whether to trigger the airbags and seatbelt pretensioners.

The system continuously monitors itself and shows faults via the airbag warning light in the instrument cluster.

After an accident, the unit stores crash data and locks itself. The repair lifts this lock.

Why does the control unit 89170-30F80 fail?

The most common cause of a fault on the 89170-30F80 is crash data stored after an accident, even if no airbag was triggered. Aged components, cold solder joints, moisture, corrosion on plug connections and voltage spikes are also possible causes.

A normal diagnostic tool does not erase such data. Airbag24 erases the crash data during the repair.

Aged components and cold solder joints can distort signals. Moisture and corrosion attack plug connections, and voltage spikes occur, for example, with a weak battery or when jump-starting.

How can you tell that the 89170-30F80 is defective?

The airbag warning light in the instrument cluster lights up on the 89170-30F80 permanently or intermittently, indicating a fault. At the same time, an error message appears in the instrument cluster, or the diagnostic tool finds no connection, or the fault memory cannot be cleared.

With such a finding, airbags and seatbelt pretensioners may not trigger in an emergency. The warning light is therefore a signal you should take seriously.

Which vehicles is the 89170-30F80 fitted in?

This airbag control unit 89170-30F80 is fitted in these vehicles: Lexus GS L10 (2012-2015) and L10 Facelift (2015-2020). Compare the part number on the label with this page to make sure it is the right unit.

Our records list the following vehicles for this control unit:

• Lexus GS L10 (2012-2015)
• Lexus GS L10 Facelift (2015-2020)

Matching the number is no proof of the cause. Only the fault memory log shows whether the control unit itself is defective or whether a plug or a cable is the cause. Therefore have the fault memory read out before sending the unit in.

How does the repair of the 89170-30F80 work?

First, read out the fault memory and enclose the log, then disconnect the battery and only then remove the control unit 89170-30F80. Afterwards, create a repair order online and send the unit in. Testing, repair and function test at Airbag24 usually take 3–4 working days.

The order of the first steps is prescribed for safety reasons and must be followed.

Airbag24 tests the unit on the test bench, replaces defective components, erases stored crash data and carries out a function test. The unit is then 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 89170-30F80 get to Airbag24?

Either you send the control unit 89170-30F80 in as a parcel, or you book a UPS collection for an extra charge. After the repair, Airbag24 returns the unit by UPS.

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