Airbag control unit with part number 89170-30350

What does the airbag control unit 89170-30350 do?

The airbag control unit 89170-30350 is the central control unit of the SRS restraint system in Lexus. It processes the signals from the crash sensors and decides within milliseconds which airbags and seatbelt pretensioners are triggered in an accident.

The unit checks the system for faults without interruption. If it finds one, the message appears via the airbag warning light.

After an accident it stores crash data and locks itself.

Why does the control unit 89170-30350 fail?

The most common cause is crash data left over from an earlier accident, even when no airbag was triggered. Other possible causes include aged components, cold solder joints, corrosion at plug connections and voltage spikes.

A normal diagnostic tool cannot erase this data. Airbag24 erases it during the repair.

Moisture at plug connections and voltage spikes, for example from a weak battery, are also among the possibilities. Which of these applies in the individual case only the test will show.

How can you tell that the 89170-30350 is defective?

A fault shows itself through the airbag warning light in the instrument cluster, which lights up permanently or intermittently. Added to this are an error message, a diagnostic tool without connection, and a fault memory that cannot be cleared.

These signs appear individually or together:

• The warning light stays on permanently.
• It only lights up intermittently.
• The instrument cluster shows an error message.
• The diagnostic tool cannot reach the control unit.
• The fault memory cannot be cleared.

If such a finding is present, airbags and seatbelt pretensioners may not trigger in an emergency. Please have it checked promptly.

Which vehicles is the 89170-30350 fitted in?

The control unit 89170-30350 is fitted in these vehicles: Lexus GS S160 Facelift (2000-2005) and S160 (1997-2000).

The vehicles in detail:

• Lexus GS S160 Facelift (2000-2005)
• Lexus GS S160 (1997-2000)

Using the label, check whether the part number matches this page; this way you make sure the unit fits. Have the fault memory read out beforehand, because only this result shows whether the control unit is defective or whether a plug or cable is the cause.

How does the repair of the 89170-30350 work?

First have the fault memory read out and attach the log. Then disconnect the battery before removing the control unit. Next, create the repair order online and send in the well-packed unit.

Airbag24 tests the unit on the test bench, repairs defective components, erases the crash data and runs a function test. Afterwards your own unit is sent back to you.

Processing usually takes 3–4 working days and covers only testing, repairing and function-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 89170-30350 get to Airbag24?

You send the unit to Airbag24 as a package, or alternatively you book a UPS collection for an extra charge. After the repair, the unit is returned to you by UPS.

Include the printed repair order in the package. Pack the control unit so that it is shockproof.