2013 AUDI B8 Steering Problems

I STARTED TO EXPERIENCE 2 ISSUES WITH MY STEERING ON THE 2013 AUDI S4 WHEN THE CAR HAD ABOUT 800 MILES ON IT AND THE ISSUE GOES ON AND OFF. THE CAR EQUIPPED WITH AUDI DRIVE SELECT CONTROLS AND THE ISSUE IS MORE PREVALENT IN COMFORT MODE, HOWEVER ALSO CAN BE FELT IN DYNAMIC (HOWEVER STEERING IS MORE TIGHT IN DYNAMIC). 1. DEAD CENTER AND DISCONNECTED FEEL - WHEN STEERING WHEEL IS POINTED STRAIGHT AT 12 O'CLOCK THERE SEEM TO BE "DEAD" ZONE A FEW DEGREES TO EACH SIDE THAT CREATES A FEEL THAT STEERING IS COMPLETELY DISCONNECTED. FEW TIMES DURING SIMPLE MANEUVERS AT HIGHWAY SPEEDS SUCH AS CHANGING THE LINE QUICKLY (REQUIRES SAY LEFT AND RIGHT WHEEL MOVEMENT) THE WHEEL SLEEPS THROUGH THE CENTER ZONE WITH THE FEEL OF NOT BEING CONNECTED TO WHEELS AND THE CAR SEEMS TO BE ON ITS OWN, BUT WHEN THE CENTER "DEAD ZONE"...

IN NUMEROUS INCIDENTS SINCE PURCHASING MY 2013 AUDI S4 I HAVE HAD TWO DIFFERENT STEERING RELATED SAFETY ISSUES. THE FIRST WAS DISCOVERED WHILE DRIVING ON THE HIGHWAY AT 65MPH WHEN MY CAR WAS VERY NEW WITH ONLY 1000 MILES ON IT. WHILE HOLDING THE WHEEL IN TWO HANDS AT 12 O'CLOCK THE STEERING WHEEL "SLIPPED" ABOUT A HALF INCH TO AN INCH AND THEN GRABBED AGAIN. THIS CAUSED THE CAR TO DRIFT SLIGHTLY TO THE LEFT, TO WHICH I MADE A SLIGHT CORRECTION BACK TO THE RIGHT WITH THE WHEEL, UPON DOING SO, THE WHEEL "SLIPPED" AGAIN AND GRABBED AFTER A HALF INCH TO INCH. THIS ALSO CAUSED THE CAR TO DRIFT BACK TO THE RIGHT MORE THAN INTENDED. THIS CONTINUED FOR MY ENTIRE DRIVE HOME (AN HOUR AND A HALF AT HIGHWAY SPEEDS). SINCE THEN IT HAS HAPPENED QUITE FREQUENTLY AND AT DIFFERENT SPEEDS AND DIFFERENT ROAD TYPES. THE...