I NEEDED TO MAKE A LEFT HAND TURN FROM A STREET INTO A COMPLEX, WAS STILL MOVING AT APPROXIMATELY 25MPH AND WHEN I WENT TO APPLY THE BRAKES, THE VEHICLE WAS NOT SLOWING OR STOPPING. AS I CONTINUED TRYING TO MAKE THE TURN, THE VEHICLE DID NOT SLOW DOWN UNTIL I HIT THE CURB AND LATER THE WALL WHERE I CAME TO A STOP.