2008 Mercedes Benz C300 • 6 cylinder AWD Automatic • 32,000 miles

I noticed a small amount of steam from under the hood, coming from near the front of the radiator, but its under the shroud and cant be seen clearly. No puddle or noise, temp ga is running at 90, hose is pressurized, and fan is not running. Is it the thermostat?
December 21, 2010.

Check out the related content below while we wait for the question to be answered by a professional mechanic.