48.6% of complaints about the 2013 Audi S4 came in its first year of service — a higher share than 100% of the 210 2013 model-years on record. That points to problems present from new rather than wear. The most-reported system is steering (19 complaints), typically at 5 mo or about 4,500 miles.
Volkswagen Group of America, Inc. (Volkswagen) is recalling certain model year 2013-2015 Audi A4 and S4 vehicles manufactured February 16, 2012, to October 21, 2014, and 2013-2015 Audi Allroad vehicles manufactured March 12, 2012, to October 21, 2014. Due to an improper algorithm in the air bag control module, if a crash necessitates deployment of the side air bags, a second impact to the front of the vehicle may not command the front air bags to also deploy.
If the front air bags do not deploy in the event of a secondary impact to the front of the vehicle, there is an increased risk of occupant injury.
ELECTRIC POWER STEERING (EPS) RANDOMLY GETS A "NOTCHY" FEELING AND LOSES ITS TRUE CENTER. THE WHEEL CANNOT BE HELD AT A PERFECT "12 O'CLOCK." IT IS EITHER AT 11:57 OR 12:03, SO GOING STRAIGHT DOWN A ROAD REQUIRES CONSTANT CORRECTION ON THE PART OF THE DRIVER. THESE NOTCHES PERSIST THROUGHOUT THE ENTIRE STEERING WHEEL. IN OTHER WORDS, BY MAKING A HARD LEFT, THE WHEEL WILL PASS THROUGH 8-10 DIFFERENT NOTCHES. AT SOME POINT, THE PROBLEM WILL THEN GO AWAY AND DISAPPEAR. *TR
WHILE DRIVING AT A LOW SPEED ON CITY ROADS, THE STEERING BECAME DIFFICULT TO CONTROL. IT FELT AS IF THE STEERING WHEEL WAS NOTCHING/RATCHETING AS I TURNED IT. I WAS ABLE TO MAINTAIN CONTROL, BUT STEERING FELT LOOSE AND INACCURATE. *TR
THE STEERING HAS A NOTCHING JUST OFF CENTER TO THE RIGHT AND LEFT. FEELS LIKE THE STEERING FALLS INTO A DETENT POSITION. MAKES CONTROLLING THE CAR AWKWARD. THE FEEL IS NOT PROGRESSIVE. THE STEERING CANNOT BE HELD IN THE DESIRED POSITION. *TR