I found this interesting article from cars.com that illustrates how to unlock the doors to a Cayenne when
the key fob isn't working.

http://blogs.cars.com/kickingtires/2...ne-hybrid.html


How Do You Unlock a 2011 Porsche Cayenne Hybrid?


After a long day at the office, I rode the elevator to the roof of our parking
garage, bag slung over my shoulder, my empty lunch bag on the other,
and headed to a brand-new, sparkling white 2011 Porsche Cayenne Hybrid.
If anything was going to soothe me after the 9-to-5, it would be
a commute home in the rich interiorof this luxury SUV. It also has a
really good stereo.


I pulled the key fob out of my pocket — no keyless entry on this
$70K ride — and hit the unlock button.
Nothing happened. Hit it again. No luck.

Hey, my 2005 VW Passat takes a few times, too. It’s understandable
I guess. Still no luck? The fob’s battery must be dead, right? Nope,
the little red light in the key fob is flashing, and I can lock the car
with the fob. No trunk, though, so climbing in isn't an option.


Time is passing, and this clearly isn’t going to open. I have to go old-school and
use a manual key, which every keyless car has as a backup. But
I was surprised at how far I would have to go to use it on the Cayenne.

• First, you have to pull the little sucker out of the back of the key fob.
• Then, bend down to find a slat on the bottom of the door handle.

• Insert the key.
• This does not unlock the door. It pops off the piece of metal that covers the lock.

• Remove the tiny key from the piece of metal.
• Insert it into the lock.
• Turn it counterclockwise and … it unlocks!

Now, I just have to get the piece of metal back on.

• Insert the key back into the metal slot.
• Snap it back on.

This is when the car alarm goes off.
I must have been squeezing the key fob while fumbling with the door and set it off.
Usually, you hit the unlock button on the fob to turn off an alarm … oh boy.

Luckily, the garage is pretty empty to hide my embarrassment.
I close my eyes and try the unlock button that led to this whole mess in the first place and … it works. Of course it does.
I discovered the next day while shooting the pictures for this story that if you push down on the metal piece improperly
while trying to put it back on, the alarm goes off. But at least the unlock button was in working order.