2011 PORSCHE CAYENNE S Power Train Problems

VEHICLE ACTS AS IF GOING OVER SPEED BUMP OVER 18MPH ALSO JERKING AND TUGGING ON YOU AS YOU ACCELERATE MAKING FOR HARD TURNING IN PARKING LOTS FEELS LIKE FRONT WHEEL IS LOCKING UP ALSO NOTICING SAFETY CONCERN WILE COMING TO STOP IN TRAFFIC UNDER ABOUT 3MPH THE VEHICLE SUDDENLY AND UNEXPECTEDLY LEARCHES FORWARD AS IF ENGINE HAS MORE POWER OR SOMETHING BECOMES UN JAMMED. TRANSFER CASE HAS BEEN REPLACED ONCE ALREADY NOW OUT OF WARRANTY IT FEELS AS IF A SAFETY CONCERN IS THE ISSUE

TRANSFER CASE FAILED 2016 ; WAS REPLACED BY DEALER AND FAILED AGAIN 2017. WHILE DRIVING FAILURE AFFECTS SHIFTING AND ACCELERATION.

I WAS PULLING FORWARD ON A LEVEL CITY STREET AND TURNING LEFT FROM A STOP SIGN. THERE WAS A SIGNIFICANT AMOUNT OF SHUDDERING AND FEELING OF A LOSS OF POWER. THIS WAS A SIGNIFICANT SAFETY ISSUE DUE TO ONCOMING TRAFFIC. OVER A PERIOD OF SEVERAL MONTHS THIS HAD BEEN INCREASING IN SEVERITY BUT THE DEALER COULD NOT IDENTIFY THE PROBLEM. I TOOK IT TO THE DEALER AND WAS ABLE TO REPEAT THE PROBLEM FOR THEM. THEY IDENTIFIED THE TRANSFER CASE AS THE ISSUE. IT WAS REPLACED. I ALSO HAD TO REPLACE THE TIRES DUE TO THE DEALERS IDENTIFICATION THAT THE TRANSFER CASE HAD CAUSED DIFFERENTIAL TREAD WEAR DAMAGE TO A REAR TIRE. AS A FORMER MILITARY AVIATOR, THERE IS NO DOUBT IN MY MIND THAT THIS IS A SAFETY ISSUE. PORSCHE NEEDS TO IDENTIFY WHAT THE ISSUES ARE (DESIGN, MANUFACTURING, SERVICING, ETC) AND REMEDY THEM. SURPRISINGLY, THIS IS A KNOWN...