2011 Audi S4

THIS VEHICLE SUFFERS FROM A FAULTY MECHATRONICS UNIT, CAUSING THE CAR TO MIS-SHIFT AND SURGE WHILE DRIVING, OR FAIL TO MOVE FORWARD WHEN STOPPED IN TRAFFIC IN "D" DRIVE, DUE TO PARKING BRAKE DRIVE-SELECT MALFUNCTIONS. IN THESE CASES THE CAR MUST BE TURNED OFF, IN TRAFFIC IN ORDER TO MOVE FORWARD AGAIN. THIS TECHNIQUE HAS WORKED SO FAR BUT I AM AFRAID THIS WILL NOT WORK EVENTUALLY, AND BECOME A SAFETY ISSUE ON THE ROADWAY.

VEHICLE WOULD EXHIBIT STRANGE SHIFTING BEHAVIOR IN LOW GEARS. WHEN UPSHIFTING OR DOWNSHIFTING FROM 1-2-3 AND VICE VERSA THE TRANSMISSION WOULD SOMETIMES HESITATE OR SHIFT INAPPROPRIATELY. AUDI DEALERSHIP UPDATED SOFTWARE AND CHECKED THE PROBLEM NUMEROUS TIMES. THEY COULD NOT FIND ANY PROBLEMS NOT ANY ERROR CODES. PROBLEM WOULD COME AND GO USUALLY WHEN IT WAS HOT OUTSIDE. A LITTLE OVER A YEAR (SEPT 2015) CAR HAS AGAIN BEEN ODDLY SHIFTING IN LOW GEARS AND EVEN REVVING TO HIGH RPMS BEFORE DOWNSHIFTING IN AUTOMATIC MODE. CAR FINALLY THREW AND ERROR CODE SAYING GEARBOX MALFUNCTION AND CAR WENT INTO LIMP MODE. THE TRANSMISSION COULD NOT FIND THE RIGHT GEARS TO SHIFT. CAR HAS BEEN EXHIBITING SYMPTOMS OF MECHATRONIC UNIT FAILURE FOR OVER A YEAR NOW.

I WAS ACCELERATING, AFTER LEAVING A RESTAURANT, INTO TRAFFIC. I RECEIVED THE "DSG MALFUNCTION LIGHT" AND SUDDENLY AT ABOUT 20MPH MY LURCHED FORWARD AND FAILED TO RESPOND TO THE THROTTLE AND SHUT OFF IN TRAFFIC. CAR RESTARTED AFTER ABOUT 30 SECONDS BUT DEFINITELY NOT SOMETHING THAT SHOULD GO WITHOUT NOTICE. IF I WAS ON THE INTERSTATE AND THROTTLE WENT OUT SITUATION COULD HAVE BEEN MUCH WORSE. *TR

I WAS CRUISING AT APPROX. 55MPH ON MY WAY TO WORK. I HAD NO SYMPTOMS OF ANYTHING PRIOR TO THE TRANSMISSION FAILURE. SUDDENLY THE CAR STARTED VIBRATING AND DECELERATING AS IF I HAD A FLAT TIRE. I MADE AN EMERGENCY MERGE INTO THE CENTER MEDIAN AND WAS LUCKILY NOBODY REAR ENDED ME. AFTER INSPECTION OF MY TIRES WHICH WERE OK I GOT BACK IN CAR. D OR R WOULD NOT WORK. THE CAR WOULD NOT MOVE.

AUDI RECENTLY REPLACED MY 2ND THERMOSTAT (1ST WAS 11/2012 AND THE 2ND WAS 11/24/2014), NOT UNDER WARRANTY, AND RETURNED MY CAR TO ME AFTER HOLDING ONTO MY CAR FOR TWO WEEKS. I WAS TOLD THAT MY VEHICLE CHECKED OUT OKAY VIA A DIAGNOSTIC AND MECHANICS REVIEW. I DROVE MY S4 FOR TWO DAYS AND WHILE DRIVING, I RECEIVED AN INDICATOR WARNING THAT READ, GEARBOX MALFUNCTION REVERSE NOT AVAILABLE, YOU CAN STILL DRIVE. I THEN NOTICED THAT THE CAR BEGAN TO VIOLENTLY BUCK WHEN I ACCELERATED. THE CAR SURGED FORWARD WHILE DRIVING IN TRAFFIC WHICH WAS ALARMING TO BOTH MY 10YR OLD DAUGHTER AND I. OTHER CARS HAD TO DRIVE AROUND US AND ONE VEHICLE ALMOST HIT MY CAR IN THE REAR. I CONTINUED TO DRIVE AT A LIMITED SPEED AND IMMEDIATELY, THE TPMS WARNING INDICATOR LIT UP AND THE CAR LOST SPEED. THE CAR WOULD BARELY MOVE AT 10 MPH AND I LIMPED BACK TO A RELATIVES UNDERGROUND PARKING GARAGE. ONCE I PARKED I COULD NOT GET THE CAR TO REVERSE OUT OF THE PARKING SPACE. I CALLED AUDI AND THEY STATED THAT I WOULD HAVE TO TOW THE VEHICLE TO THE NEAREST AUDI SERVICE CENTER. THE VEHICLE WAS TOWED TO AUDI AND I AM WAITING TO HEAR THE RESULTS OF THEIR FINDINGS. I HAVE ALREADY INVESTED OVER $1,750 IN VEHICLE REPAIRS (THERMOSTAT AND REAR BRAKES/ROTORS). I DO NOT WANT TO CONTINUE TO INVEST MONEY INTO THIS VEHICLE PIT. AUDI NEEDS TO RECALL THESE FAULTY PARTS (THERMOSTAT AND MECHATRONIC) AND STAND BEHIND THEIR PRODUCT. I'VE SEEN NUMEROUS COMPLAINTS IN FORUMS AND ON THIS SITE REFERENCING THESE SAME ISSUES. *JS

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