Cayenne S (9PA) V8-4.5L (2003)
11. Unscrew both centre air guide fastening screws -4- for the back seat area and pull out the upper air guide toward the rear -A- and the lower one
toward the front -B-.
12. Pull out centre air vents on the left -A- and right -B-
13. Turn the left and right temperature sensor -90°- and pull out of the heater/ A/C unit.
14. Pull the centre air vents for the footwell downwards from the heater/ A/C unit, lift it toward the rear, and pull it out of the air vents for the footwell.