Key on my cayenne s

SOURCE: how do you adjust the clock on a porsche cayenne s 2005

Hi, British Summer time hey! You can use the indicator stalk to access to menu.
Navigate your way to settings, the select the Clock option and set the time using the ricker switch, you can also format the clock to 12 /24 hour - enjoy!

Bash.

SOURCE: 2006 Porsche cayenne trunk will not open.

Emergency operation of rear lid
If the rear lid cannot be opened with the radio
remote control (e.g., if the battery of the remote
control is dead), the emergency operation must
be performed:
1. Unlock and open the driver's door with the
vehicle key.
2. Switch on the ignition so that the alarm system
will not be triggered.
3. Check if the TAILGATE function is activated in
the multi-purpose display of the instrument
panel.
Please observe the chapter “TAILGATE” on
Page 119.
4. Press the central locking button in the armrest.
The rear lid is now unlocked and can be opened
with the unlocking handle

SOURCE: how to change battery on 2004 porsche cayenne

It's a 10mm triple square socket

SOURCE: fule door on my 2004 Porsche Cayenne S won't open with release

It's likely the fuse. The fuse diagram is in your owners manual. The fuse box is on the side of the dash when you open your driver's door. That should solve your issue.

SOURCE: My Porsche Cayenne S Key fob no longer unlocks the Door

unlock the door then press the lock button on remote and hold down for 20/30 secs.manual does say hold button.....