2009 Cadillac STS-V Owner's Manual - Page 298

Traction Control System (TCS) The vehicle has a traction control system that limits wheel spin. This is especially useful in slippery road conditions. On a rear-wheel-drive vehicle, the system operates if it senses that one or both of the rear wheels are spinning or beginning to lose traction. On an All-Wheel-Drive (AWD) vehicle, the system will operate if it senses that any of the wheels are spinning or beginning to lose traction. When this happens, the system brakes the spinning wheel(s) and/or reduces engine power to limit wheel spin. The system may be heard or felt while it is working, but this is normal. This warning light comes on if there is a problem with TCS. See Traction Control System (TCS) Warning Light on page 3-63. When this warning light is on, the system will not limit wheel spin. Adjust your driving accordingly. TCS automatically comes on whenever the vehicle is started. To limit wheel spin, especially in slippery road conditions, the system should always be left on, but TCS can be turned off if needed. Notice: Do not repeatedly brake or accelerate heavily when TCS is off. The vehicle's driveline could be damaged. When TCS is switched off on AWD and STS-V vehicles, the system may still be working. This is normal and necessary with the hardware on the vehicle. It may be necessary to turn the system off if the vehicle gets stuck in sand, mud or snow and rocking the vehicle is required. See Rocking Your Vehicle to Get It Out on page 4-24 and If Your Vehicle is Stuck in Sand, Mud, Ice, or Snow on page 4-23 for more information. See Winter Driving on page 4-21 for information on using TCS when driving in snowy or icy conditions. 4-10