Coolant Leak from Thermostat Housing on Porsche Cayenne

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.

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Average mileage: 56,275 (40,000–85,000)
5 model years affected: 2003, 2004, 2005, 2006, more2008
10 people reported this problem
3 people shared problem details
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.
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