Cadillac cts User Manual

This button allows you to change the driving mode of
the vehicle from the normal driving mode to a sportier
driving mode. In sport mode the vehicle will have firmer
shifting and increased performance.

The sport mode button is
located on the center
console near the
transmission shift lever.

Press the button once to turn on the sport mode. 
Press the button again to return to normal driving mode.

This light located on the
instrument panel cluster 
will come on when the sport
mode is active.

When you turn off the ignition while driving in sport
mode, the vehicle will remain in sport mode. Press the
sport mode button again to turn off the feature and
return to normal driving mode.