Lately my 400E has been doing this. Its a squeak coming from the left front wheel. When I turn right, it gets worse, when I turn left, it goes away. When I put the brakes on it goes away. I already cleaned the caliper and pads once, but apparently didnt work. Could it be a bad wheel bearing? I never seen a front one go bad before in these cars. How is the front wheel bearing set up on these? Is it a sealed unit like the back? Or is it like the W126's?

Thanks

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93 300D 2.5 Turbo, Black/Palomino 273K
09 E350 Black/Black 41K