Lexus 2008 IS250 Owner's Manual page 172

2-4. Using other driving systems
To disable TRAC and/or VSC
If the vehicle gets stuck in fresh snow or mud, TRAC and VSC may
reduce power from the engine to the wheels. You may need to turn the
system off to enable you to rock the vehicle in order to free it.
Turning off TRAC
n
Turning off TRAC and VSC
n
172
Quickly push and release the but-
ton to turn off TRAC.
The slip indicator light should come
on.
Push the button again to turn the
system back on.
Push and hold the button for more
than 3 seconds while the vehicle is
stopped to turn off TRAC and
VSC.
The slip indicator light and "VSC
OFF" indicator light should come
on.
Push the button again to turn the
system back on.