Porsche 2007 Cayenne, Owner'S Manual

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Driving and Driving Safety
Power-Transmission and Running-Gear Control Systems
A complex interconnection of all control systems acting in power transmission and in the running gear has been realised in your Porsche.
All control systems have been linked with the aim of combining the best possible driving performance with maximum safety.
The following systems are involved:
System/designation Scope
PTM
Porsche Traction Management
– Full-time all-wheel drive
– Electronically controlled center differential lock
– Automatic brake differential (ABD)
– Traction control system (TCS)
– Reduction gear/Low Range
PTM Plus
Porsche Traction Management
In addition to the PTM features, PTM Plus also includes:
– Electronically controlled rear differential lock
PSM
Porsche Stability Management
– Stability management system
– Anti-lock brake system (ABS)
– Brake system prefilling
– Brake booster
– Traction control system (TCS)
– Automatic brake differential (ABD)
– Engine drag torque control (MSR)
Air suspension
with level control and height adjustment
– Fully load bearing air spring struts with integral shock absorbers
– Air supply system with pressure accumulator
PASM
Porsche Active Suspension Management
– Shock absorber system with adaptive, continuous shock absorber control
PDCC
Porsche Dynamic Chassis Control
– Active chassis control system to stabilise roll tendency of vehicle body when driving