2005 Cadillac CTS Owner's Manual - Page 169

Anti-Lock Brake System Warning Light With the anti-lock brake system, the light will come on when your engine is started and may stay on for several seconds. That's normal. Traction Control System (TCS) Warning Light If the TC (traction control) warning light comes on and stays on, there may be a problem with the traction control system. If the ABS warning light comes on and stays on, there may be a problem with the antilock portion of the brake system. If the red BRAKE light is not on, you still have brakes, but you don't have antilock brakes. See Brake System Warning Light on page 3-42. If the light stays on, turn the ignition to OFF. If the light comes on when you're driving, stop as soon as possible and turn the ignition off. Then start the engine again to reset the system. If the light still stays on, or comes on again while you're driving, your vehicle needs service. If the regular brake system warning light isn't on, you still have brakes, but you don't have anti-lock brakes. If the regular brake system warning light is also on, you don't have anti-lock brakes and there's a problem with your regular brakes. See Brake System Warning Light on page 3-42. The TC (traction control) warning light will come on briefly when you turn the ignition to ON. If it doesn't come on then, have it fixed so it will be ready to warn you if there is a problem. The light will also come on if you turn the traction control system off using the TC (traction control) on/off button located in the glove box for the CTS and on the steering wheel for the CTS-V. If the TC (traction control) warning light stays on or comes on while you are driving, pull off the road as soon as possible and stop carefully. Try resetting the system by turning the ignition off then back on. 3-43