COOLANT LEAK

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MY 1995 S500 LEAKS RADIATOR COOLANT ONTO THE REAR FLOOR ON BOTH SIDES AT 1ST. I WOULD JUST REPLACE COOLANT THEN I NOTICED THAT THE VENT ON THE REAR OF THE CENTER CONSOLE HAS COOLANT COMING OUT OF IT AND YOU CAN SEE IT POOLING UP INSIDE VENT IT FILLED UP SO MUCH ON FLOOR I BELIEVE IT SHORTED OUT SOMETHIN BKUZ NOW CAR WONT START NO SOUND AT ALL LIGHTS COME ON BUT NO SOUND JUST (CLICK-CLICK) HELP!!!