[JohnD333]

Take a long heavy screwdriver and put the blade end to the offending bearing/accessory. Climb up on the bumper and lean over enough to put the handle up to your ear. You should hear the whine as you rev the engine. A gentle swish or white-noise like shhhhhh is normal. With it being a 2011 turbo, unless you have 150k miles, I would lean more towards the turbo than the alternator or ps pump...