2011 Volvo C70 Owner's Manual - Page 154

06 Starting and driving Stability system Dynamic Stability Traction Control (DSTC) The stability system consists of a number of functions designed help reduce wheel spin, counteract skidding, and to generally help improve directional stability. A pulsating sound will be audible when the system is actively operating and is normal. Temporarily switching off Spin control 1. Turn the thumbwheel (A) on the left-side steering wheel lever until the DSTC menu is displayed. 2. Hold down the RESET button (B) to toggle between DSTC ON or DSTC SPIN CONTROL OFF. Traction control (TC) This function is designed to help reduce wheel spin by transferring power from a drive wheel that begins to lose traction to the wheel on the opposite side of the vehicle (on the same axle). TC is most active at low speeds. This is one of the stability system's permanent functions and cannot be switched off. 06 G020349 NOTE • The message DSTC SPIN CONTROL OFF indicates that the stability system's spin control function has temporarily been switched off. The stability control indicator light will illuminate and remain on until spin control has been reactivated. The spin control function is automatically enabled each time the engine is started. functions are active. Thumb wheel RESET button • • Spin control (SC) The spin control function is designed to help prevent the drive wheels from spinning while the vehicle is accelerating. Under certain circumstances, such as when driving with snow chains, or driving in deep snow or loose sand, it may be advisable to temporarily switch off this function for maximum tractive force. • DSTC ON indicates that all system Active yaw control - AYC (DSTC only) This function helps maintain directional stability, for example when cornering, by braking one or more of the wheels if the vehicle shows a tendency to skid or slide laterally. 154