Airbag control unit with part number 89170-53200

What does the airbag control unit 89170-53200 do?

The 89170-53200 is the central control unit of the SRS restraint system in Lexus vehicles. It evaluates the crash sensors and, in a crash, decides within milliseconds which airbags and seatbelt pretensioners are triggered.

The system continuously monitors the unit. It displays faults via the airbag warning light.

After an accident it stores crash data and locks itself.

Why does the control unit 89170-53200 fail?

The most common cause at the 89170-53200 is crash data stored after an accident, even if no airbag was triggered. Other causes are aged electronic components, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes. With this control unit, the crash data often cannot be erased; if you want it erased, contact Airbag24 briefly before sending the unit in.

• aged electronic components
• cold solder joints
• moisture and corrosion at plug connectors
• voltage spikes, for example from a weak battery or a jump start

Crash data cannot be erased with a standard diagnostic tool. Airbag24 checks the part number before the unit arrives.

How can you tell that the 89170-53200 is defective?

A defect on the 89170-53200 shows itself through the airbag warning light, a fault message in the instrument cluster, or a diagnostic tool without a connection. A fault memory that cannot be cleared also comes with it.

• Airbag warning light stays on permanently
• Airbag warning light comes on intermittently
• Fault message in the instrument cluster
• Diagnostic tool receives no connection to the control unit
• Fault memory cannot be cleared

With such a finding, airbags and seatbelt pretensioners may not trigger in an emergency. Therefore do not wait long, but have the system checked.

Which vehicles is the 89170-53200 fitted in?

The 89170-53200 is fitted in these vehicles: Lexus IS XE20 (2005-2009) and XE20 Facelift (2010-2013).

You can see the assignment of the part number to the vehicles in this list:

• Lexus IS XE20 (2005-2009)
• Lexus IS XE20 Facelift (2010-2013)

Compare the part number on the label of the removed unit with this page, and then you know it is the correct unit. Whether the control unit is defective, or whether a plug or cable is the cause, only the read-out fault memory shows. Therefore have it read out beforehand.

For the same vehicles, we also repair control units with the part numbers 89170-53110, 89170-53480, 89170-53490, 89170-53540, 89170-53560, 89170-53570.

How does the repair of the 89170-53200 work?

Checking, repairing and testing at Airbag24 usually takes 3–4 working days. Before removal, have the fault memory read out, disconnect the battery and only then remove the 89170-53200; afterwards create a repair order online and send the unit in well packed.

Airbag24 checks the unit on the test bench, repairs defective components and carries out a function test. Then your unit is returned to you.

Anyone who wants the crash data erased contacts Airbag24 briefly before sending the unit in. 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 89170-53200 get to Airbag24?

Either you send the 89170-53200 as a parcel yourself or you book a UPS collection for an extra charge. After the repair, Airbag24 sends the unit back to you by UPS.

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