This AM I took off the left front wheel and did a visual inspection of the lower ball joint boot. I sprayed it with a degreaser and wiped it clean with a cloth. The boot is very much intact and doesn't have any cracks in it. I know that the weather and road elements take it's toll on rubber including those on the control arm bushings. The weather/road conditions here in Eastern NC doesn't compare to areas that I've lived in the midwest. The rattle that I have sounds like you have a loose bumper and more like loose metal on metal. My next option is a trip to my local indie MB shop. Thanks for your feedback.

tarheel75