2014 Audi S4 Complaints

The contact owns a 2014 Audi S4. The contact stated that while driving at 70 MPH, he observed multiple unknown warning lights illuminated. The EPC warning light was also illuminated. The contact stated that the “Do Not Drive" message was displayed. Additionally, the contact stated that the steering wheel was stiff and failed to steer as intended. The vehicle was taken to the dealer where it was diagnosed that the electronic steering module and rack needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 61,000.

MY 2014 AUDI S4 HAS A EPC LIGHT THAT KEEPS TURNING ON WHILE DRIVING THAT CAR. THE EPC LIGHT WILL PUT THE CAR INTO LIMP MODE AND WILL HAVE A ROUGH IDLE AND CAN BARLEY DRIVE. WHEN THAT LIGHT TURNS ON YOU HAVE TO PULL OVER IMMEDIATELY AND RESTART THE CAR TO CONTINUE DRIVING AND IS A COMPLETE SAFETY HAZARD BECAUSE IT WILL HAPPEN WHEN YOU ARE ON THE FREEWAY. THE LIGHT MAINLY TURNS ON WHEN YOU ARE TRYING TO GET UP TO SPEEDS OF THE FLOW OF TRAFFIC. I HAVE TAKEN IT TO THE DEALER MANY TIMES TO GET THIS ISSUE RESOLVED AND THEY KEEP SAYING THERE IS NO ISSUE WITH THE CAR WHAT'S SO EVER. I DECIDED TO TRY TO FIGURE OUT WHAT WAS WRONG WITH THE CAR MYSELF BECAUSE THE DEALER WAS NO HELP. WHEN I LOOK IT UP HUNDREDS OF FORUMS SHOW UP TALKING ABOUT IT AND NO ONE CAN FIGURE OUT WHAT IS GOING ON WITH THE CAR AND EVERYONE IS HAVING THE SAME ISSUE AND HOW THE DEALER IS NO HELP AT ALL. ONE PERSON SAID THEY TOOK IT TO THE DEALER AND THERE WAS A FAULTY WIRE ON THE ECU. I THINK ITS THE ECU FAILING AND DOESN'T KN...

THE VEHICLE EXHIBITS "NOTCHY" STEERING AT HIGHWAY SPEEDS, PARTICULARLY IN COLD WEATHER. AT OR ABOVE APPROXIMATELY 55 MPH, THE STEERING WHEEL TRIES TO "BOUNCE" LEFT AND RIGHT RATHER THAN MAINTAINING CENTER--EVEN WHEN TRAVELING ON A STRAIGHT, FRESHLY-PAVED SECTION OF INTERSTATE. THE DRIVER HAS TO CONSTANTLY ADJUST THE WHEEL TO KEEP THE CAR TRAVELING STRAIGHT. THE STEERING FUNCTIONS NORMALLY OTHERWISE, AND THE PROBLEM DOES NOT MANIFEST ITSELF AT LOW SPEEDS. I BEGAN TO NOTICE THE PROBLEM AROUND AUGUST OF 2020. OTHER OWNERS OF THE SAME VEHICLE HAVE REPORTED SIMILAR PROBLEMS: HTTPS://WWW.AUDIZINE.COM/FORUM/SHOWTHREAD.PHP/690756-NOTCHY-STEERING.

I HAVE ENCOUNTERED THE PROBLEM OF AIR BUBBLE FORMATION IN MY FUEL SYSTEM (CODE 16903) WHEN READING CODES IN MY CAR. I THOUGHT IT WAS JUST A FUEL PUMP ISSUE SO I REPLACED IT. I THEN REALIZED IT WASN'T JUST A PUMP ISSUE AS THE CAR KEPT READING THOSE CODES AND KEPT STOPPING. I TALKED TO A LOCAL AUDI DEALERSHIP AND SAID I WOULD HAVE TO GET THE FUEL PUMP VAPOR EXTENSION. WHEN ASKED THEY SAID THAT IT'S ONLY A TSB NOT A RECALL DUE TO IT NOT BEING A SAFETY ISSUE. NOW YOU TELL ME, MY CAR WENT INTO LIMP MODE AND STOPPED ONCE IN THE MIDDLE OF THE HIGHWAY, AND 3 TIMES IN THE MIDDLE OF TRAFFIC 2 WEEKS LATER. I BELIEVE IT'S A SAFETY PROBLEM AS ANYONE COULD'VE RAN INTO ME AND CAUSED BIGGER PROBLEMS. I DON'T THINK I SHOULD PAY 800 DOLLARS FOR MY SAFETY. THAT PIECE SHOULD'VE BEEN INCLUDED IN THE FUEL PUMP ASSEMBLY FROM THE BEGINNING. FROM MY PERSPECTIVE AND THE EVENTS THAT UNFOLDED, THIS IS A SAFETY PROBLEM AND MY CAR NEEDS TO BE FIXED ACCORDINGLY.

WHILE DRIVING, STEERING CAN BECOME NOTCHY. STEERING INPUTS ARE NOT ALWAYS 100% TRANSFERRED TO THE FRONT WHEELS. THERE CAN BE A "DEAD SPOT" IN THE STEERING. THE CAR DOES NOT ALWAYS FOLLOW THE INTENDED PATH. THE PROBLEM COMES AND GOES, AND SEEMS TO BE EXACERBATED IN COLDER WEATHER.