2013 Audi S4 problems

“SERIOUS STEERING ISSUE GOING ON. ENTERED HIGHWAY IN COMFORT MODE, ACCELERATED AND SWITCHED LANES TO PASSING LANE WHEN SUDDENLY THE STEERING HAD A TORMENTED MOMENT AND DECIDED TO STEER ITSELF FROM THE 12:00 O'CLOCK TO 3:00 O'CLOCK POSITION, WHILE DRIVING AT HIGHWAY SPEED. THIS IS VERY DANGEROUS AS I HAD A CAR ON THE RIGHT OF ME AND MY CAR TRIED TO DRIVE ITSELF INTO THEIR LANE. THE STEERING ALSO HAS NOTCHINESS GOING ON, AND HAS BEEN CONFIRMED BY MY LOCAL DEALERSHIP, BUT ONLY AT LOW SPEEDS. THIS ISSUE IS LIFE-THREATENING AND NEEDS TO BE ADDRESSED BY AUDI.”

“Transmission fail while driving and stationary at traffic light. Main DTC: P179F00 - Drive sensor position: malfunction Additional DTC: P179E00 - Drive sensor position: electrical malfunction ABS: 00473 Parking brake: U111300 TCM: 01315 This situation occurred 3 times in the past 3 weeks while driving or being stationary at a traffic light. Event triggers loud warning sounds, red flashing lights/icons in dashboard, total loss of power while engine still running. At this time, this problem creates highly dangerous driving conditions with random total loss of power. The situation is temporarily remedied if engine is shut off and restarted.”

“TRANSMISSION SHIFTS HARSHLY AND MAKES NOISE DURING SHIFTS. WAS TOLD THE MECHATRONICS NEED REPLACEMENT. SOMETIMES WHEN ACCELERATING THE CAR WILL JOLT AS IF IT IT LOSES POWER MOMENTARILY. WHEN MERGING INTO TRAFFIC IN COULD BE DANGEROUS.”

“My MMI 5F module went out right after an oil change service on Nov 12, 2022 I called them as soon as I got home to inform Leader automotive in Normal Il. I was told I would not be able to be seen until January 5 2023 at 1:pm. I then called back a few days later and was able to move that appointment to Dec 16 at 10:00am. I paid $179.11for them to inspect and locate the issue: according to leader automotive the 5f module is bad and needs replaced. In my print out it states it is no longer in production. This part # 8RI-035-746-C is my entire control module that controls all my safety sensors, fluid levels, tire pressure, suspension control, navigation, hands free technology etc... I contacted Audi USA via Facebook and asked why the part is no longer in production. Via Instant messenger on Dec 16 2022 I answered all their questions and was told by Audi USA they would get back to me on in 2-3 days. I have heard nothing from them. When you try and call the hold times are 3.5-5 hours. No warning signs that the unit was failing other than the radio would turn on and off. It would not stay on long enough to reset tire pressure etc... after they inspected it it no…”