Porsche Carrera 911 997 owners manual page 68

text version of content this owner's manual page from owners manual to the vehicle Porsche Carrera 911, year of production 2004 - 2011:

Porsche Stability Management PSM uses these values to determine the direction Examples of PSM control operations (PSM) of travel indicated by the driver. PSM intervenes and helps to correct the course if – If the front wheels of the vehicle drift on a PSM is an active control system for stabilization of the actual direction of motion deviates from the bend, the rear wheel on the inside of the bend the vehicle approaching the performance limits of chosen course (steering-wheel position):is braked and the engine power is reduced if driving maneuvers. It brakes individual wheels as needed. In addition, necessary. the engine power may be manipulated in order to – If the rear of the vehicle swings out on a bend, Warning! stabilize the vehicle. the front wheel on the outside of the bend is Risk of an accident, resulting in serious per-The events below inform the driver of PSM control braked. sonal injury or death. operations and warn him/her to adapt his/her The increased control that is provided should driving style to the road conditions:Additional braking functions not induce you to take greater risks with your – The multifunctional information light on the – Pre-filling the brake system: safety. The limits dictated by the laws of instrument panel flashes.The brake system is prepared for possible physics cannot be overcome, even with PSM.– Hydraulic noises can be heard.subsequent emergency braking if the acceler- The risk of accidents due to inappropriate ator pedal is released suddenly and quickly. speed cannot be reduced, even by PSM.– The vehicle decelerates and steering-wheel The brake system is prefilled and the brake The driver bears the responsibility for all forces are altered as the PSM controls the pads are already applied gently to the brake driving maneuvers. brakes. discs. f Adapt your driving style to the prevailing road – Reduced engine power. and weather conditions. – Brake booster: – The brake pedal pulsates and its position is In the event of an emergency braking operation f Obey all traffic laws. changed during braking. where the pedal force is insufficient, a brake In order to achieve full vehicle deceleration, booster provides the braking pressure neces- Sensors at the wheels, brakes, steering system foot pressure must be increased after the sary for maximum deceleration at all 4 wheels. and engine continuously measure:brake pedal has begun vibrating. –Speed Advantages of PSM – Direction of travel (steering angle) – Best possible traction and lane-holding ability – Lateral acceleration in all driving situations – even on road surfaces – Rate of turn about the vertical axis with varying friction. – Longitudinal acceleration 66 Operation, Safety

owners manual Porsche Carrera 911

owners manual Porsche Carrera 911 - year of production: 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 - Porsche Carrera 911 997 owners manual EN