2010 LEXUS RX HYBRID Electrical System Problems

VEHICLE SAT IN MY DRIVEWAY OVERNIGHT DURING A HEAVY RAIN THAT TURNED INTO FREEZING RAIN. THE NEXT MORNING WHEN I WENT TO START THE CAR A WARNING CAME ON TO CHECK THE HYBRID SYSTEM. WHEN CALLED, LEXUS SAID THE VEHICLE HAD TO BE TOWED TO THE DEALERSHIP FOR INSPECTION/REPAIR. AFTER VEHICLE WAS TOWED BY FLATBED CARRIER TO THE DEALERSHIP FOR INSPECTION/REPAIR AND UNLOADED AT THE DEALERSHIP, THE VEHICLE FILLED WITH SMOKE AND LEXUS TECHNICIAN SAID LUCKILY ONE OF THE DEALERSHIP EMPLOYEES SAW THE SMOKE, LET HIM KNOW, AND HE DISCONNECTED THE HYBRID ELECTRICAL SYSTEM, AND HAD HE NOT DONE SO, IT IS HIGHLY LIKELY THE VEHICLE WOULD HAVE CAUGHT FIRE. THE WATER PENETRATION WAS DETERMINED TO HAVE COME FROM THE TOP REAR ROOF/BODY SEAM WHERE TWO PIECES OF BODY METAL JOIN. EXACTLY THE SAME SPOT ON BOTH SIDES OF THE CAR LEAKED. THERE WAS NO PREVIOUS DAMAGE OR CORROSION AT...