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Removal [04/2013 - 10/2017]: Procedure

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2017 Lexus IS 350, 2017 Lexus IS 300, 2016 Lexus IS 350, 2016 Lexus IS 300, and 2015 Lexus IS 350. However, it is still accessible from the selected car via links, so may be relevant.

DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
NOTE:
When disconnecting the cable, some systems need to be initialized after the cable is reconnected.

Refer to INITIALIZATION [04/2013 - 06/2014] , or refer to INITIALIZATION [06/2014 - 08/2015] , or refer to INITIALIZATION [08/2015 - 10/2016] , or refer to INITIALIZATION [10/2016 - 10/2017]

REMOVE ENGINE ROOM ECU COVER

NOTE:

Remove all water on and around the engine room ECU cover.
Perform the inspection indoors to avoid rain.
Be sure to prevent water intrusion to the ECM (connectors and screw parts).

Remove the 3 bolts and engine room ECU cover.

GTY410796

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DISCONNECT WIRE HARNESS

Disconnect the 2 engine wire harness connectors from the connector holder.

GTY470852

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Disengage the claw and disconnect the connector from the connector holder.

Using a screwdriver, disengage the claw.

GTY466804

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Disconnect the connector holder from the engine room ECU box.

Disconnect the 6 ECM connectors.

GTY466801

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REMOVE ECM

Remove the 2 nuts and ECM from the engine room ECU box.

NOTE:

If the ECM has been struck or dropped, replace it.

GTY410798

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

REMOVE NO. 1 ECM BRACKET

Remove the 2 screws and No. 1 ECM bracket from the ECM.

GTY417832

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

REMOVE NO. 2 ECM BRACKET

Remove the 2 screws and No. 2 ECM bracket from the ECM.

GTY404553

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002