RichardMuirhead

Issues started with being unable to open rear trunk using either the driver side switch or the remote - no sound of an actuator being triggered.

Next day, dashboard warning that spoiler wouldn't deploy.

Next day, rear left break light doesn't work.

There isn't any remote chance that these are all related, is there? Appears strange to me.

2006 Porsche Boxster S

Help appreciated in diagnosing and fix description.

Richard

Pennies over $3,200

Thanks for this one.. i was just about to describe the exact same situation...

I just bought a 2004 Cayenne Turbo used here in Poland, and having a very "hard clunk" as described during some hard shifting. First time it happened I got scared to death that something failed ;) I am not having it during downshifts, only hard upshifts.

Now will be off to the local Porsche center to have them check the valve body in the transmission. :)

Don't be surprised if it's over a USD$2,400 repair. It did fix the problem, and now my Cayenne is amazing!

It was a none-Porsche mechanic. He suggested that the constant wearing would damage the transmission - I'm vehicle mechanics illiterate!

Since the original post, I have taken it to a Porsche dealership in Dallas that confirm it as valve body. It's scheduled to be fixed on 8/16.

Thanks.

The most common cause of that is a failing valve body in your transmission. Your description matches the symptoms to the "T." Its turned into a fairly common issue with the 04 - 05 Cayennes. I would not say that replacing the valve body is an "interim fix." If you get the valve body replaced your transmission should last indefinitely. I've seen a lot of Cayennes get valve bodies replaced and never have transmission problems again.

I'm curious, who gave you this advice?

Where abouts on the vehicle do you hear the clunk? If it's from the middle of the vehicle I would start by inspecting the driveshaft centre brng.

Middle of the vehicle - the first time I heard this, I thought I'd left the transmission on the road somewhere behind me!

It has been suggested that (an interim fix) is to replace the valve (something-or-others) in the transmission - however, due to likely waring on the transmission gears, it would only be a matter of time before a complete transmission would be required.

Thoughts?

I recently purchased an '04 Cayenne Turbo with 24k miles.

Test driving the vehicle didn't display anything of what I am about to describe...

Most often, 4th gear upon acceleration (rarely on deceleration) bump, hiccup and associated "clunk".

Consistent issue with downshift under acceleration. Dominant in 5th-3rd downshift, but also present in 4th-3rd in acceleration only. Present in manual and auto-shift mode under moderate acceleration.

Any ideas for a resolution?

Is the vehicle considered safe until resolved? (stupid question, but I need to ask).

Many thanks