TOYOTA SIENNA 2006 BRAKING PROBLEM CAUSED SELF COLLISION. ON DRY WEATHER. VEHICLE LOST BRAKING AND I HIT NEAR BY HILLY LAND ON TURN. VEHICLE SHOWED BRAKING PROBLEM ON WET WEATHER, RAIN AND SNOW AND VEHICLE LOOSES THE BRAKING AND RELATED ABS AND VSC FAILURE. BRAKE PEDAL GOES DOWN AND CLICKS AND BRAKE STOPS WORKING. MY WIFE NO LONGER TRUST THIS VAN AND EVERYBODY IS AFRAID TO DRIVE WITH ME IN IT. *TR