I WAS DRIVING MY 2003 LEXUS GX470 ON MY WAY TO THE HOSPITAL WITH MY THREE YEAR OLD SON ' WHO WAS EXPERIENCING BREATHING PROBLEMS. I LOST CONTROL OF THE SUV NEAR THE EXIT FOR THE HOSPITAL ' AS I WAS PREPARING TO TAKE THE EXIT FROM THE FREEWAY. THE VEHICLE WENT OFF-BALANCE AND DID A 360 DEGREE ROLLOVER FROM THE EXIT RAMP. I ENDED UP IN THE MEDIAN BETWEEN THE OFF RAMP AND THE ON RAMP. MY SON AND I WERE INTACT AFTER THE ACCIDENT. THE VEHICLE BEHAVED ERRATICALLY DURING THE EPISODE ' AND I COULD NOT FIGURE OUT WHAT WAS HAPPENING WITH THE CONTROLS. I WOULD LIKE FOR NHTSA TO LOOK INTO THE STABILITY SYSTEM OF THIS VEHICLE ' BASED ON THIS EXPERIENCE AND RECENT NEWS OF SIMILAR VEHICLES FROM LEXUS. *TR