Battery is completely dead on my 2000 Porsche 911 C4

you can back feed a power outlet or cig lighter to charge it up

I found a website that finds a way to jump the car without having battery access. It is actually fairly simple. Follow these instruction: http://perryandcoblog.com/2009/11/17/porsche-carrera-911-996-dead-battery-locked-hood-solution/ Hope this helps! Please rate 4 thumbs up!

So you have an electric hood release, no battery no electricity no hood release.

Use jumper cables. In the fuse box (interior of the car near the pedals to the left) is a booklet with instructions. You need to slide out one of the "fuses" (it's not a fuse, but a red thing that you pull out) and connect the positive terminal of a jumper cable to it. The negative goes connected to the door latch (on the car, not door). Connect the other end to a running car's battery or a charger and you can use the regular button to open the hood and access the baterry compartment from there.

On the 996 and 997 there is a panel on the drivers side footwell that has a fuse panel and exposes a red positive terminal that pulls out slightly. You can connect the positive lead from a battery or charger to this terminal and the negative lead to a convenient ground spot like the door catch.

I removed the battery for the winter from my 996 and went through this process in the Spring when I realized my mistake.

open the fuse box in the foot well should be redpillar that can pull towards you will have a pic of a car on it.connect one live to this earth to door latch and now can pop hood.there is also a button by fuse box to close open rear spoiler.

If you open the fuse box in driver's compartment by your left leg, there is a red plug that you can pull that will expose a positive lead.

Put a charger on the lead and ground the other side of the charger to the frame and it will provide power to use the hood latch.

I have seen other people write about using the car charger that fits into the cigarette lighter but I have no personal knowledge. I hope that is helpful.

There is also an emergency release under one of the wheel wells but I never attempted to look for it.

The cheapest way to get around this and get enough voltage into the system to open the hood is to purchase a cigarette lighter extension (about 3 feet) and cut off the female plug on the end. Strip the 2 wires back a few inches and attach one to the positive and the other to the negative on a set of jumper cables. Attach the other end of the negative jumper to a battery. With the keyless entry in hand, touch the positive cable to the positive terminal on the battery and press the unlock button until you hear the car doors click. Once it clicks, you should be able to use the hood latch to gain access to the battery.

its under the hood.....in the front. if you can get it open its there, if not there are jumper poles in the rear engine bay.
Also a metal bar you can jump in the fuse box to give you enough electric to open the front hood....
If all else fails goto local porsche dealer and get them to explain how to operate the emergency cable release in either the driver or passenger side front wheel well. they get this all the time they wont be shocked...