sweet35th

Hi, My wifes 2011 Cayenne S recently developed a small coolant leak from the rear of engine. It actually looks like it has been seeping for a while given the residue I found. I have the leak isolated, but can not find the name of the component or a part number anywhere. I appears to be some form of heater flow valve in the heater hose. I am attaching a picture. The valve is secured to the heater hoses via spring clamps, and it sits at about the 2 o'clock position behind the right (passenger) cylinder head. This picture is taken from between the front driveshaft and bell housing of transmission. (You can see the coolant seeping around the seems of the cap that clips onto the valve itself) Thank you for any help.

sweet35th

Someone has to recognize this part?! I have searched nearly every reference I can google search.

Kirill

It's hard to tell from this pic - just look at parts diagram - https://www.porschepartsnow.com/v-20...oses-and-lines

CAVU

Most coolant re-circulation pumps posses a round cylinder (part in the left side of the picture) so I think you are on the right track...a valve (part on the right side of the picture). possibly 958 572 810 00. Found the image on ebay. Double check that you don't have a weeping leak above it leading you astray.

PTEC

Its a shutoff valve for coolant flow to the transmission cooler (which is on top of the transmission). Its a common leak.

Coleman

A really common issue for the leak is the coolant tank, it didn't look like my tank was leaking but I always had puddles on the floor, finally replace the tank in the problem stopped... Rather straightforward only takes an hour or so...