Porsche Cayenne I 1 owners manual page 182

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

10_Cayenne_21_KW17.book Seite 182 Donnerstag, 9. April 2009 3:33 15 Warning! Advantages of PTM Automatic brake differential (ABD) In spite of the advantages of PTM or four-wheel dri-– Obvious improvement in traction, driving The ABD system controls the front and rear axles ve, it is still the driver’s responsibility to adapt her/stability and steering ability of the car.separately. If one wheel of an axle starts to spin, his driving style and maneuvers in line with road – Vehicle is more manageable when driven at its it is braked so that the other wheel on the same and weather conditions, as well as the traffic situ-performance limits.axle can be driven. ation. The ABD recognizes different driving states, and it The increased safety that is provided should not – Improved straight-ahead tracking and stability. features control strategies adapted to these induce you to take greater risks with your safety. – The aforementioned features allow for a states. In situations in which little propulsive power The limits set by the physics of driving cannot be sportier setup of the running gear.is required, such as when the car moves off on a overcome, even with PTM or four-wheel drive.– The TCS and ABD provide even better traction level gravel surface, traction control already Risks of accident due to inappropriate speed for all wheels.becomes active at low engine speeds. If great cannot be reduced by PTM. propulsive power is required, e.g. when moving off Full-time all-wheel drive on an uphill slope or for rapid acceleration, the ABD is adapted accordingly. Porsche Traction Management (PTM)With the four-wheel drive, the drive power is A special off-road program is used in Low Range variably distributed to the front and rear wheels.mode. Porsche Traction Management is a full-time all-Power distribution and wheel speed compensation wheel control system designed to influence the between the front and rear axles is realized with a Traction control system (TCS) longitudinal and lateral dynamics. It is closely transfer box.The traction control system prevents the wheels linked with the Porsche Stability Management Distribution of the drive power depends on the from spinning by adjusting the engine power, (PSM) system: wheel speed difference between the two axles.thereby ensuring good lane-holding ability and a PTM ensures the best possible power distribution The transfer box always controls power distribu-stable driving behavior. to the four driven wheels at the front and rear tion in such a way that optimal propulsion is achie- axles. The system realizes this optimal traction by ved, even on an unfavorable road surface. intervening in the lock control function of the trans-Full-time four-wheel drive ensures optimal handling fer case and rear differential. PTM is active at all and greater stability. times and, unlike the PSM, cannot be switched off. 182 Driving and Driving Safety

owners manual Porsche Cayenne

owners manual Porsche Cayenne - year of production: 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 - Porsche Cayenne I 1 owners manual EN