This 2006 Cayenne S with less than 50k on the clock had distinct coolant smell coming from the engine bay and from underneath the car at idle when the motor was running. After diagnose and our previous experience we were authorized to do the work on the car. At the same time, we replaced the water pump (despite no leaks detected, precautionary), thermostat (precaution) as well as the main belt which showed a little wear surprisingly. Now the car has updated metal pipes, new water pump and thermostat with fresh coolant.
I will leave you guys with bunch of pictures. If any questions, pm me, call me, email me at any time.