TassiePorsche

My 04 CTT has an ongoing battery drain issue that seems somewhat inconsistent in how frequently it occurs. The battery isn't old (replaced late 2021) and is a correct spec AGM. If charged it can last up to a few weeks or a few days before going completely flat and not starting the car. Some noteworthy items that could be related are; -Headlight wiring degredation (I've ordered replacements) although doesn't look like there's any metal on metal contact between wires -Keyless entry inconsistencies - buttons on drivers side don't work but do on passenger side. Also the drivers door sensor doesn't activate until you pull on the handle -Aftermarket Alpine head unit - This looks like a quality installation but maybe something is awry? Underfloor wiring is a possibility although I have seen no signs of dampness and there are no weird electrical gremlins to speak of, other than the parasitic drain itself. I will get the battery tested to verify it is still ok although I feel like given the reputation of these cars it will be a drain and not a battery that has died in short order. Any suggestions or tricks to try would be appreciated.

I'm about to replace my valve body on my 2004 Cayenne Turbo, however this is quite confusing as it seems there are multiple different version of valve bodies with the same part number (955 325 039 00 ) From what I have found in researching, there are three visually different versions of this valve body, each pictured below. As you can see, there are two versions which have an additional 'port' or hole, one of these has a metal plate covering it, where as the other is left open. Finally, the third version has no port or opening at all. I ordered the original part number valve body for my 04 turbo, and I have received the variant in the first picture (3 port). Until I remove the transmission pan to do the replacement, I won't know whether or not this is the same or different as mine. Some things I have read suggest that the valve body simply had a different casting in newer years and these are interchangeable without an issue. What it says in the photo above seems to contradict this though, and suggests it is crucial that you use the same as what your car had originally. Another uncertainty regarding this is the TCU, and whether or not this needs to be changed or updated to suit different valve body versions. Searching for these questions on the internet is met with very little luck, and many contradictory answers. I would be extremely grateful if someone who is knowledgeable in this area can shed some light on this for me, as at this point I'm totally unsure about what is true and what isn't.

I have a 2004 Cayenne Turbo in need of a new transmission valve body (yep, that's been said many times before I know). However, it seems that since the last topics on this issue were posted back around 5-10 years ago it's become significantly more difficult and expensive to track down quality rebuilt valve bodies for these cars. Many of the businesses that people used to reccomend such as RevMax no longer supply these valve bodies, and looking online most of the businesses that claim to sell them look incredibly shady and untrustworthy. On eBay, most rebuilt valve bodies for sale are cheap knockoffs from China or from dodgy looking shops in the US that claim they are rebuilt but they've just come straight out of old cars (as per buyer feedback). There has to be something in between all of these questionable units and a genuine brand new one which is something like $2,500 (or nearly $4000 in Australian dollars which is my local currency). Has anyone gone through this process in recent times and managed to find a quality rebuilt unit without having to go to Porsche for a brand new one? Any advice would be thoroughly appreciated.