2006 LEXUS GS Steering Problems

THE STEERING WHEEL LOCKED UP WHILE COMING OFF THE HIGHWAY. I HAD TO PULL OVER TO SIDE OF THE ROAD AND EVENTUALLY HAVE THE CAR TOWED. THE STEERING WHEEL IS STILL LOCKED THIS DAY. I CAN'T TURN IT LEFT OR RIGHT. I COULD HAVE GOTTEN INTO A ACCIDENT WITH THE SUDDEN LOST OF POWER STEERING TO MY VEHICLE

THE VEHICLE LOST THE POWER ON THE MIDDLE OF THE ROAD WITH BATTERY LIGHT AND BRAKE LIGHT ON. AFTER TOWING THE VEHICLE TO NEAR BY AUTO REPAIR SHOP, THE MECHANIC REPLACED THE ALTERNATOR AND BATTERY LIGHT AND BRAKE LIGHT WERE OFF; HOWEVER THE STEERING WHEEL IS 90 DEGREE OFF THE CENTER PLUS WARNING LIGHTS INCLUDING CHECK ENGINE LIGHT, AFS LIGHT (BLINKING), TRACTION CONTROL LIGHT WERE ALL ON. THE MECHANIC COULD NOT DETECT OR CORRECT THIS PROBLEM SO I TOOK THE CAR TO THE LEXUS DEALER AND THEY COULD NOT DETECT WHAT CAUSED THE WHEEL TO TURNED AND LIGHTS TURNED ON AND IT COSTS ME $575 TO TURN OFF ALL THE LIGHTS AND RESTORE STEERING WHEEL TO THE ORIGINAL POSITION. SINCE THE WARRANTY ON THE CAR RAN OUT, THE LEXUS CORPORATE REFUSE TO HEAR THIS ISSUE AND WILL NOT INVESTIGATE THE PROBLEM. I BELIEVE THERE IS MAJOR FLAWS WITH THIS MODEL...