I have a 2004 Cayenne s just turned 114,000 miles. Massive coolant pipe failure. Lower pipe cracked under heavy acceleration. Coolant light came on pulled over and saw the dreaded coolant leak under the car. Leading up to the massive failure I would see the coolant light come on under heavy high speed turns. Now it seems there was a small leak that caused a small amount of coolant to come out and every couple of months I'd have to add a small amount to the reserve tank. It seems other pipe just gave up eventually. At 114,000 miles mine seems to be the highest mileage plastic coolant pipes I have year of. I bought the "coolant upgrade kit" from Sonnen Porsche for $424.00. The shipping is automatically calculated at 10% of the order, so call them after ordering for the actual shipping. The replacement kit was pretty complete- they told me its the same kit they give the technicians in their dealership when they do this job. It does not include coolant.
While it was apart I changed the intake manifold gaskets ($62.00) and the thermostat ($42.00) while in there the knock sensors are easily accessible but at $80.00 each I didn't change them, doesn't seem to be a common issue with the cayenne s. Also did the plugs while in there. the job is a major pain in the ***.. But after doing it, and the driveshaft a few months ago I am hoping to run this car to about 150-170k miles. These items, along with coils seem to be the major issues you see with these cars. Other than these problems the car is in mint condition-everything works as it should and with the mileage is still a very impressive car to drive.

 

The latest:
http://www.topclassactions.com/lawsu...-moves-forward

 

What does this mean? The lawsuit has been moving forward ever since someone started it. Also how many are in the class now?

 

Looks like this has been resolved out of court and a relief settlement should be announced soon. See attached letter I received from our attorneys in Ohio. Be nice to get my $2k back, but not holding my breath!

 

This is a great news.

Kindda amazing how other manufacturers are handling the incidents, from a recent example with Honda Odyssey ignition cylinder issue,

"The recall covers 347,000 Honda Odyssey minivans and 277,000 Pilot SUVs from the 2003 and 2004 model years, as well as 247,000 Acura MDX SUVs from the 2003 through 2006."

If it was Porsche, they will be like, it's out of warranty, sir you need to pay for that.

God darn Honda/Acura is recalling the models that are 9yrs old, and soon to be 10yrs old.

 

The news is somewhat ambiguous since it doesn't say what the "relief" is going to be. I have seen cases like this where the relief is something like $1,000 off your purchase of a new vehicle.. something that would be totally worthless to me.

Waiting to hear when the shoe drops.. and we know what has been agreed to.

 

Can someone clarify for me
i have the Porsche workshop manual procedure for this (wm 196120) and it seems to suggest that their are two lubricants / assembly gels for the sealing rings? ECS's document only seems to use the GLEP 1 compound.
Porsche states that " Kluberplus so6-100 must always be used on the sealing rings on the intake socket between water pump and thermostat housing" is this socket, the one the large lower pipe goes into ?

 

Been almost a year since I did mine but I don't remember any connection between the water pump and the t-stat housing. I did use the lube between the tube that feeds the alternator cooling line and the t-stat housing though. I don't recall using the lube on the water pump (metal) gasket itself but I may very well have used a very thin layer.

Hopefully our resident tech will chime in.

 

In the past, I used the Klüberplus for all of the sealing rings, and it worked great. I still have some of it in my tool box. I have not been able to find it recently in PET, and I suspect it may have been superseded by the Syntheso GLEP 1 compound. I will have to look up the part numbers to be sure.
In short though, I'm sure that either lubricant will work fine for all of the o-rings in the coolant pipe service.

 

Took my `05 CS w/59k miles in today for the update fix. Just had two friends with failures... `05 w/54k and an `06 w/69k miles, the `05 failure hapened this past weekend.

Quoted $1200 for the coolant pipe fix at my dealer and pick it up tomorrow.

 

would a dealers pressure test cause a failure of the pipes ? Had the O6 Cayenne checked, no issue noted on the day but booked it in anyway for the following week, pipe/s gave up after a drive back from the airport (3 DAYS AND LESS THAT 80 MILES AFTER TEST!)

 

Hey Nick, still have the RHD 911?

I'm not a tech but seriously doubt the PT would cause it and even if it did they would have had to be about to go anyway. Those plastic pipes are pretty thick. That's assuming they used reasonable pressure for the test.

Good luck with the repair.

 

Yeap the RS is enjoying a winter break at the Hershey Auto Museum, with a select group of friends in the Porsche Display which runs through April (post PCA Autojumble)

Work done on the Cayenne - its the Houston workhorse - note to self must get it registered in TX still running around on DE plates....

 

Good price on the gaskets needed for this repair

http://www.ebay.com/itm/111034345642...84.m1558.l2649

 

Questions about relief from the lawsuit:
1. Will all who have suffered a coolant pipe failure be affected, regardless of whether they were in the class? My pipes just failed, hence I am late to the party.
2. Does a certified Porsche dealer have to repair this in order to qualify for relief, or can a non-dealer specialized (Porsche, etc) repair facility perform (and I still qualify for relief)?

There may be others, like me, who are in this boat. It would be nice to know. Thanks for any info on this!