Porsche
Cayenne
15

Coolant Leak from Thermostat Housing on Porsche Cayenne

Problem Description and Possible Solution

A coolant leak may develop at the thermostat housing, under the intake manifold. Our technicians tell us that revised parts are available to correct this concern.

Problem Data
RepairPal Verified
Average mileage: 69,683 (40,000–115,000)
4 model years affected: 2004, 2005, 2006, 2008
15 people reported this problem
Comments
Viewing 1 - 5 of 5 comments
Took my 06 cayenne up to Brumos to look at it and they said it would cost 3200 to fix...i left because there is a recall but only for cayenne v8 for the same issue..why not just fix them all they use to same faulty parts
Last oil change i was notified that my thermostat housing was leaking. Sounds like this is another common weak spot that Porsche didn't take responsibility for. Like the coolant tubes, like the carrier bearing for the driveshaft, like the rear hatch liftgate struts... and Im probably leaving out a half dozen more.
Just bought 08 Cayenne S. Dealer identified problem and I'm trying to research before I give them more money. They noted a coolant leak but failed to inform me that intake socket and gel have been modified to address this issue, sounds like bad initial design and procedure but they want owners to pay for update.
going up a hill on an freeway, water and coolant blew and drained...immediate alarms went off, within 10 seconds we were on the side of the road waiting for RoadSide Assistance. Car is in the shop right now. Porsche said they'd cover it under factory warranty.
We see this problem quite often in our shop. The problem is, that the transmission has to be removed to get access to the thermostat.
Make sure you use the original coolant.