book.book Page 22 Friday, July 19, 2013 12:53 PM Traction Control Traction Control Traction Control How It Works The traction control system constantly monitors the difference in speed between the front and rear wheels. If Model S experiences a loss of traction, the traction control system minimizes wheel spin by controlling brake pressure and motor power. The electronic stability control indicator displays on the instrument panel whenever the traction control system is actively controlling brake pressure and motor power. WARNING: Traction control does not prevent accidents caused by driving dangerously or turning too sharply at high speeds. Turning Off Under normal conditions, you should leave traction control on. Turn it off only in circumstances where you deliberately want the wheels to spin, such as: • Starting on a loose surface, such as gravel or snow. • Driving in deep snow, sand or mud. • Rocking out of a hole or deep rut. To turn traction control off, touch Controls > Driving > Traction Control > Off. The Traction Control Off indicator TC displays at the top center of the touchscreen whenever the traction control system is turned off. Although traction control turns on again automatically the next time you start Model S, turn it on using the touchscreen as soon as the circumstances that required you to turn it off have passed. 4.22 MODEL S OWNERS MANUAL