I was wondering if anyone has had any over-heating problems with their Touareg. It only happens periodically, I'm wondering if it's the thermostat, Water Pump or Coolant Control sensor that needs to be replaced because the radiator fluid is still full and not leaking. But The Fan is always running Also when I bought my Touareg it didn't come with an owners manual so does anyone know exactly where the thermostat is at on a 2005 V8 Touareg?