Porsche Cayenne Owner's Manual page 36

Seat position
A correct sitting position is important for safe and
fatigue-free driving. We recommend the following
procedure for adjusting the driver's seat to suit
individual requirements:
1. Adjust the seat height to give yourself enough
headroom and an unobstructed view outside
the vehicle.
2. Adjust the seat until, with the accelerator pedal
fully depressed, your leg is straight but your
entire foot still rests on the accelerator pedal.
3. Grip the top half of the steering wheel. Set the
backrest angle and steering wheel position so
that your arms are almost outstretched.
However, your shoulders must still rest on the
backrest.
4. If necessary, correct the seat fore-and-aft
adjustment.
5. Adjust the height of the headrest so that the
upper edge is at eye level or higher.
36
Seats, Mirrors and Steering Wheel
Adjusting the seat
A Front seat height adjustment.
B Rear seat height adjustment.
C Fore and aft adjustment.
D Backrest angle adjustment.
E Lumbar support adjustment.
To permit a relaxed sitting posture, the back-
rest curvature is infinitely adjustable in vertical
and horizontal directions for individual pelvis
and spinal column support.
f Press the switch in the direction indicated by
the arrows until the desired setting is reached.