Three possible problems, either the motor is bad, the switch is bad or something in the CANBUS is interfering with the command to turn on. Unlike old school cars the porsche, vw and Audi uses CAN communication to the wiper motor which is also a module to turn on as commanded via switch to steering column module to instrument cluster to wiper motor. To eliminate CAN, you need to remove the radio and check voltage to the orange/brown or orange/lilac. both need to be approximate 2.5volts with key just turned on. If either are excess of 5 volts or 0 volts you might as well take it to a porsche genius like me or a dealer and expect to pay around 10hrs of labor and whatever the part is to fix it.
The 2006 Porsche Cayenne has 24 valves.
The 2006 Porsche Cayenne has a V6 engine.
The 2006 Porsche Cayenne is a gas-powered vehicle.
The 2006 Porsche Cayenne has a 6-speed shiftable automatic.
The 2006 Porsche Cayenne is 15 ft. 8.3 in. (188.3 in.) long.
The 2006 Porsche Cayenne's turning circle is 39.0 ft..
The 2006 Porsche Cayenne has double overhead cam (DOHC).
The 2006 Porsche Cayenne has a 29.1 degrees angle of approach.
The 2006 Porsche Cayenne has a 25.7 degrees angle of departure.
The 2006 Porsche Cayenne has a drag coefficient of .38 Cd.
1709 lbs
The maximum payload of the 2006 Porsche Cayenne is 1709 lbs..