Weird this kinda shizzle.
I had a similar rattle noise coming from the drivers side wheel arch/engine area. Sounded like a loose tensioner/pulley.
Took it in.... nothing found! Noise went away, never came back.
Mysterious noises on the Black ST's!!
Spooky.
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Computer games don't affect kids; I mean if Pac-Man affected us as kids, we'd all be running around in darkened rooms, munching magic pills and listening to repetitive electronic music.