TRAC OFF Indicator Light Remains ON: Description
WARNING: This page is about a different car, the 2009 Lexus IS 350 and 2009 Lexus IS 250. However, it is still accessible from the selected car via links, so may be relevant.
The skid control ECU is connected to the combination meter via the CAN and multiplex communication systems.
Pressing the VSC OFF switch turns off traction control and pressing and holding this switch turns off traction and VSC controls. If TR(A)C control turns off, the TR(A)C OFF message will be displayed on the multi-information display.