Porsche Cayenne S owners manual page 238

text version of content this owner's manual page from owners manual to the vehicle Porsche Cayenne S, year of production 2002 - 2010:

Porsche Stability Management (PSM)Advantages of PSMReadiness for operation PSM is an active control system for stabilisation of – Best possible traction and lane-holding ability PSM is switched on automatically every time you the vehicle during extreme driving maneuvres. It in all driving situations – even on road surfaces start the engine. operates together with the Porsche Traction with varying friction. Management (PTM) system. – The system compensates for undesired vehi-Function PSM makes use of both the ABD and TCS sys-cle reactions (load-alteration effect) when the Sensors at the wheels, brakes, steering system tems, as well as the known functions of the anti-driver releases the accelerator pedal or brakes and engine continuously measure: lock brake system (ABS) and engine drag torque on corners. This compensation functions up to –Driving speed control system (MSR). the maximum lateral acceleration. – PSM actively stabilises the vehicle in the event – Direction of travel Warning! of under and oversteering during dynamic – Lateral acceleration In spite of the advantages of PSM, it is still the driv-driving maneuvres (e.g. rapid steering move-– Longitudinal acceleration er’s responsibility to adapt his driving style and ments, during lane changes or on alternating corners). – Rate of turn about the vertical axis maneuvres in line with road and weather condi- PSM uses these values to determine the direction tions, as well as the traffic situation. – Improved braking stability on corners and on different or varying road surfaces.of travel desired by the driver. The increased safety that is provided should not in-PSM intervenes and corrects the course if the ac- duce you to take greater risks with your safety. tual direction of motion deviates from the desired The limits set by the physics of driving cannot be course (steering-wheel position): overcome, even with PSM. It brakes individual wheels as needed. If neces- Risks of accident due to inappropriate speed sary, PSM additionally influences the engine power cannot be reduced by PSM. or the gear-changing charac teristic of the Tiptron- ic in order to stabilise the vehicle. 238 Shifting Gear, Traction Systems

owners manual Porsche Cayenne S

owners manual Porsche Cayenne S - year of production: 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 - Porsche Cayenne S owners manual EN