Reza

I am looking for advise from whom used either Continental Extreme Contact DWS tires or Yokohama Prada Spec X on his Cayenne during Winter season. How happy/satisfied were you on the snow and ice? Both are All Season tires and are very much close to Winter Tire specifications and ratings !! Thanks in advance.

Thanks. I checked the engine oil and that is half way between Max and Min. I know that on June 06 I topped it off and it was at Max. in 2 months time half liter of it is gone. I am wondering why you said: "leak of some fluid" rather than specifically refering to engine oil. the color and form of the fluid is very much like engine oil to me... I am confused why the leak has soaked that far from the engine... as you see its almost in the middle of the car rather than the front part of the car. What does the P/S system do? I see drops of oil thrown to the very end of chassis too... like something has broken and oil spilled out with pressure initially !

Could someone please help me understand where the source of this oil leak could be (Cayenne S) ? Oil has soaked the car's underneath. I thought these pictures can better show the area than I explained it. I do not see any drop of oil hanging there or even on the ground. The soaked area is also very much solid like the oils are mixed with dirts and solidified and stuck to the chassis... When I pressed my finger and dragged on it, it is like 1 to 2mm of oil and dirt thickness that gets clean from the chassis... I do not think this is being Transmission fluid because that is not red at all or watery... I never had engine oil level drop in the winter, but 2 months ago I noticed about 1 liter of oil level has dropped and I top it off. Just thought that might be what people talk about natural engine oil consumption on Cayenne S and Turbos but might be something else ! Thanks for you help.

I wish you have asked or read this post... I had come into same understanding and had asked everybody. See this post: The T is not for cayenne S and it is only for Turbo models.

Not to my knowledge. They replace the main pipes, starter if required (by the way note that the starter (if required) costs around $700 and they really replace a previously factory repair one not a totally brand new starter. they take yours too, then clean, repaired to sell to another customer) and breather pipe on top of the main pipes. unfortunately being proactive and trying to also fix Water Pump at this time does not reduce the costs, that is considered toady independent job, so do not worry for that piece and if that happened in future that would be a separate job. usually parts are under 2 years warranty and the dealer warranty their labor work for 2 years meaning if you faced same issue in next year or so you can get back to them. check to get this from them. One suggestion though: when you get it back, a day later, when the car is in normal temperature (lets say you return from work, park in garage, next morning before you go to work) check the coolant level and you might see it is not at MAX level or its below MIN. top it off to MAX (no more) so that in 2 weeks time when you check it again and its on MAX you are relived there is no leak anywhere else. since the mechanic is in rush to get things done in a day they go by assumption that capacity is xx liter of fluid and they fill it up, then they run the engine and when its warm they check the coolant level and OK to go. and since engine is been warm it usually shows more than it is. But when you check it out at room temperature you'll see its lower than minimum.

Danish: I have the Cayenne S 2004 as well and just 2 months ago I went through this process. Mine used to show lack of coolant of about 1.5 liter every 1500 miles approximately, I used to top it off and again after 1500 miles same loss of coolant. I finally decided to repair. I read through every article in this forum about the Bypass Coolant Pipe Repair and in one of the articles I started to ask those who had the T pipe issue about they Cayenne Model. be assured that the T pipe is not available in S and its specific to Turbo. I even ordered the T pipe and handed over to my mechanic (porsche dealer) to replace and they could not find it in the car, they also searched the part number by model number ad VIN number and confirmed it is not on S models. if they have confirmed that your cayenne problem is the Coolant Pipes under the intake manifold I suggest you do it sooner because you might be able to prevent damage to your starter which is basically under the coolant pipes and the leak falls over it, gradual leak make a pool there and starter will be soaked into coolant. the factory installed pipes are Plastic but new ones that you would replace will be Aluminum. Check this link for picture of the pipes: http://www.suncoastparts.com/product/PKCAYPIPE.html?Category_Code=955sWaterCooling Also check this: check my photos and the starter situation: Hope it helps.

Seems like I do not have this code in the list (on the sticker located in the trunk) !! By the way, I think "snzuloz" was asking about type of the differential oil and I provided him what I could read out of my invoice (changed at dealer).

Its Cayenne S 2004. I am not sure how the TSB you named has defined the differential with locking, But, I think mine is equipped with locking differential for the fact that in I have the gear key located between the 2 front seats it engages 4WD and locking in 2 steps.

Dear Friends, I am told that my Cayenne S 2004 has 20% to 30% brake pads left on it and once this is over I need to replace front and rear rotors because the thickness is below spec (32mm). I was curious to check it out myself with a clipper and I noticed that the current thickness is 32.82mm Assuming the new rotor will be 34mm (Maximum thickness I will get) and the 32mm is the min. thickness (worn rotor) mine is kind of 0.8mm more than minimum (currently 32.82mm) and that is itself like 40% of the thickness to be consumed. (calculating 34mm-32mm = 2mm is 100% of the thickness to be used/worn, the 0.8 is like 40% of this 2mm). I would like to know experts feedback on: - whether or not I should replace the rotors at this point? May I just replace the pads now and leave the rotors for next brake job? - Assuming I was wrong on rotor thickness and ignore replacing rotors at this point because of budgeting issues and proceed with only replacing the pads with a new set, what would be the damage? Would the result be sever shaking of steering wheel during hard brakes or worse things will happen? Thanks for your time.

Exactly as CTTinTo said and you can refer to any Porsche dealer in your area and ask for Part# 955-106-323-50

Gentlemen, Any of you who have experienced/replaced the T Connector 955 106 323 50 on his car, is your car Cayenne S or Turbo? Many thanks.

Thanks for the replies, I am very much happy to hear there are people out there who have been through pipe upgrade process BUT not seen the Torque Converter Seal failure just after pipes break... that gives some hope... Back to starter, Yes I made the decision to pay for a new one, it was expensive ($709). I could not wait and see one of these days my starter fails and have to dismantle all the parts again to reach the starter... so although money was an issue but between "bad" and "worse" i chose "bad".

Gentlemen, The photo posted above by "Faceman" is the T connecotr with Part# 955 106 323 50 which is really the problem maker. Could you please inform if that is specific to Cayenne TURBO models or not? I need to know if Cayenne S models have this item in their engine and if anyone has really replaced that in his Cayenne S? Many thanks,

Thank you all... Since we have people both in Canada and US who have replaced this T Connector, may I pose the question differently now: May this T pipe be specific to Cayenne TURBO models only and NOT available in Cayenne S? I can not believe that I made the part (T Connector Part# 955 106 323 50) available to my mechanic ,in Porsche Dealer basically, and he is in the middle of upgrading my pipes to aluminium (already in that place) and tells me this pipe is not for your Cayenne S !!!! it is not available in that engine?

I am thinking anyone of you who experienced break of the T connector (955-106-323-50) has European Design engines in your Cayenne which has the T connector pipe. My CS04 is currently under repair for coolant pipes. I asked my mechanic and he ordered the T connector pipe based on part number, He also check that on the exploded views before he orders that to make sure what part it is... so far so good... when he received the part and he was ready to install it he could not find anything like this behind the engine or around... there was only a Straight Hard Plastic not a T shape one. So he did further research and told me that the European cars have this T connector and not the US Cayennes... designs are different between US and Europe Cayennes. Do we have anyone here in US who has experienced this problem or proactively has changed this T connector on his Cayenne? Thanks.