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#1
07-15-2009, 08:47 AM
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ML320 overheating and losing brake action
Driving my 99 ML 320 recently in Dallas on a 100 degree day, with lots of stops and starts, the car overheated to a point just below the critical mark and I noticed my brake pedal becoming spongy; had to pump it a bit to secure proper braking. (86K miles on this car)
I got the car home, checked the coolant which was right up there --- checked the vacuum assist hose to the master cylinder (seems AOK) Does anyone have any ideas in regard to the causes of these symptoms on a hot Dallas day of city driving? I have not yet physically checked the front brake pads, but don't believe they are critically down ...... Ben Carter
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Ben Harrison Carter 1999 Mercedes ML320 87K 1992 Mercedes 300CE 89K 1995 Corvette 29K -- Sold Dec 09 1989 Mercedes 420SEL 99K -- (Sold 4/08) 1968 Mercedes 230S (106K) (Sold 9/06)) 1976 Mercedes 450SEL 130K (Just sold - 06) 1961 Mercedes 220Sb (sold years ago) 
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#2
07-16-2009, 08:27 AM
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ML brakes are OK
The overheating and brake problems were apparently temporary and there is no sign of them now, although I am going to replace the front brake pads soon.
Ben Carter
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Ben Harrison Carter 1999 Mercedes ML320 87K 1992 Mercedes 300CE 89K 1995 Corvette 29K -- Sold Dec 09 1989 Mercedes 420SEL 99K -- (Sold 4/08) 1968 Mercedes 230S (106K) (Sold 9/06)) 1976 Mercedes 450SEL 130K (Just sold - 06) 1961 Mercedes 220Sb (sold years ago)
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