Slip Indicator Light does not Come ON: Description
WARNING: This page is about a different car, the 2006 Lexus IS 350. 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 CAN and multiplex communications.
The SLIP indicator blinks during VSC and/or TRAC operation.
When the system fails, the SLIP indicator comes on to warn the driver (See TERMINALS OF ECU ).
The SLIP indicator comes on when traction control is terminated by pressing the traction OFF switch.