Saturn 2009 AURA Owner's Manual page 227

The system may be heard or felt while it is working;
this is normal.
When the light is on solid and either the SERVICE ESC
or ESC OFF message is displayed, the system will not
assist the driver in maintaining directional control of
the vehicle. Adjust your driving accordingly. See DIC
Warnings and Messages on page 3-45.
The Electronic Stability Control (ESC) system is
automatically enabled whenever the vehicle is started.
To assist the driver with vehicle directional control,
especially in slippery road conditions, the system should
always be left on. But, ESC can be turned off if needed.
This light will flash on the
instrument panel cluster
when the ESC system
is both on and activated.
If the vehicle is in cruise control when the system
begins to assist the driver maintain directional control of
the vehicle, the ESC/TCS light will flash and the cruise
control will automatically disengage. The cruise control
system may be re-engaged when road conditions allow.
See Cruise Control on page 3-10.
The traction control system can be turned off or back
on by pressing the ESC/TCS button. To disable both
traction control and ESC, press and hold the button
briefly.
The ESC/TCS button is
located on the instrument
panel.
4-7