Other DME Functions
Other DME Functions
Sport button as standard
The Sport button is standard for all Cayenne models. This is located in the middle of the center console on the side of the gearshift lever or Tiptronic S selector lever facing the driver. This allows the driver to choose between a setup with optimized comfort and consumption or a sporty setup in the new Cayenne models.
Standard setting
In Normal mode, the electronic engine management system restricts the engine torque in order to optimise fuel consumption (except during kickdown).
- Optimized comfort and fuel consumption
- Dynamically comfortable accelerator characteristic
Sport mode
When the Sport button is activated, a "SPORT" symbol lights on the instrument cluster. A sportier vehicle setup is obtained when Sport mode is switched on.
- Auto Start Stop function deactivated
- Sporty engine setup
- Accelerator reacts more quickly, more spontaneous throttle response
- Throttle open further for same pedal travel
- Coolant temperature is reduced
The electronic engine management system controls the engine with more bite. The dynamic response of the engine then becomes even more direct. On vehicles with 8-speed Tiptronic S, upshifts take place later and downshifts earlier in automatic mode. The Auto Start Stop function is also deactivated.
In addition, the chassis control systems Porsche Active Suspension Management (PASM) and the optional Porsche Dynamic Chassis Control (PDCC) are switched to Sport mode. This makes damping sportier and the steering behavior in bends is more direct. This in turn leads to improved road contact. Activation of the Sport button influences the areas DME, Tiptronic S, PTM, PASM and PDCC.
Off-road mode
- In off-road mode, the accelerator pedal characteristic is very flat at low speed in order to ensure precise throttle control when driving off-road.
- At faster speeds, the accelerator pedal characteristic becomes increasingly more responsive for better handling on sand dunes.
Control of VarioCam Plus
The DME control unit also controls the VarioCam Plus system (stepless control of the intake camshafts from 0 to 50° crank angle) and valve lift adjustment of the intake valves (large/small lift).
This system for adjusting the intake camshafts is also used in the new Cayenne engines. Apart from continuous adjustment of the valve timing, the system also enables adjustment of the valve lift for the intake valves. In conjunction with direct fuel injection, this allows high power output and torque values together with low fuel consumption. A new feature of the new generation of V8 engines is a fully aluminum, lightweight camshaft adjuster. This lightweight design measure reduces the weight by approx. 3.7 lbs (1.7 kg) and also reduces the rotating masses, thereby achieving a more agile engine response.
Activation of the demand-controlled variable oil pump
The DME control unit also activates the control valve of the demand-controlled variable oil pump. Another measure designed to achieve high efficiency is use of a variable oil pump with demand-based control. The pump is designed as an external gear pump with an integrated turbocharger extraction stage for the V8 twin turbo engine. Demand-based control is performed by the DME control unit, while adjustment is hydraulic. The engine management system uses the engine speed, oil temperature and torque as input variables. Based on this information, the engaged gear wheel width and thus the geometric displacement volume of the gear wheel set are changed through the axial movement of a gear wheel (moved hydraulically) and this in turn changes the oil pressure.
NOTE: When removing the electric radiator fan, the fan must not be held by the fan blades as this can lead to imbalance.
1 steplessly controlled radiator fan
Cayenne V6 MT-0 to 600 W, AT-0 to 850 W
Cayenne S 0 to 850 W
Cayenne Turbo 0 to 850 W
NOTE: Diagnostic information is described in Guided Fault Finding.
Increase in idle speed to increase the charging current
The idle speed can be increased in three stages after a corresponding request from the gateway. The charging current of the generator is increased as a result. The field current is regulated in the gateway. To increase the generator output, the idle speed can be increased in three stages when the engine is warm (e.g. V8 engines 640, 740 and 850 rpm).
Communication with Adaptive Cruise Control (ACC)
In communication with the control unit of the adaptive cruise control, it is possible to perform acceleration or deceleration via the electronic throttle and where appropriate braking, also to vehicle stop.
NOTE: Further information on ACC is provided in the Owner's Data.