Hi all: I have a 93 500SEL. Each time I put it in reverse and put my foot on the foot brake there is a distinct grinding noise coming from the left front wheel. After I stop and put the car in drive the rubbing noise diminishes until I tap the brake at which time is goes away. It does not grind at all going forward. Anyone have some idea what this might be. Thanks..Al.

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It sounds like a brake pad is hitting the rotor or there is a rock inbetween the pad and rotor. I have seen both.
Good luck

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Benzmac:
Donnie Drummonds
1992 500E (very soon I hope :)
1981 280GE SWB
ASE CERTIFIED MASTER AUTO TECHNICIAN
SERVICE MANAGER FOR 14 BAY FACILITY
MERCEDES SPECIALIST 8 YRS
PARTNER IN MERCEDESSHOP.COM

It sounds like one of the pads is moving around. Check the caliper and make sure the locator springs are all inside the arch of the caliper.

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Jeff Lawrence
1987 300e
1989 300e
1987 BMW 325