MY NISSAN MURANO HAS A DEFECTIVE DRIVER SIDE VISOR. IT CONSTANTLY FALLS FROM THE "UP POSITION" INTO DRIVERS VISION. THIS CAUSED AN ACCIDENT!!! I WAS TRAVELING DOWNHILL ON A SNOW/ICE COVERED ROAD, I HIT A BUMP AND THE VISOR FELL INTO MY VISION I REACHED TO PUT THE VISOR BACK INTO THE UP POSITION. PUSHED IT INTO PLACE AND IT IMMEDIATELY FELL AGAIN I PUSHED IT BACK UP(DISTRACTING MY ATTENTION FROM THE ROAD IN FRONT OF ME) AND NOTICED A CAR STOPPED IN THE MIDDLE OF THE ROAD, I SWERVED TO MISS THE STALLED CAR, I AVOIDED HITTING THE CAR BUT AS I SWERVED I RAN OVER BLACK ICE THE CAR GOT SIDEWAYS AND HIT A CONCRETE BARRICADE.