I got a 5-speed 190E and it feels like my front brakes lock up after i drive for a while. I'm sure its the front brakes because when i start moving it feels like something is holding the car back and it struggles to move. Then after i drive for a while in that condition the engine temp. goes up to almost 120 F then a light comes on on the left side of the instrument panel that looks like this (o) [a circle inside two dashed line parenthesis]. After this light comes on the car starts driving fine. Can anyone tell me what causes this?