Technical Service Bulletins (TSBs) for the 1994 S4 are official communications between Audi & their dealerships that describe processes for troubleshooting or fixing certain common problems. All vehicle manufacturers are required by U.S. law to make their TSBs available to the public.

    ENGINE (PWS)

    • TSB #SB-01-15-29

      Date Announced:
      JUL 01, 2015
      NHTSA ID:
      #10058584

      AUDI: ENGINE, ON SOME VEHICLES, WOULD RUN IRREGULARLY OR HAVE MALFUNCTION INDICATOR LAMP (MIL) ON OR POSSIBLE FILTER ELEMENT FOR CAMSHAFT ADJUSTMENT VALVE CAN LOOSEN AND IN OIL CIRCUIT, THERE IS NO DAMAGE FROM LOOSENED PARTICLES. Read More »

    ENGINE AND ENGINE COOLING

    • TSB #A191562 2025303-

      Date Announced:
      SEP 08, 2015
      NHTSA ID:
      #10123764

      Supersedes Technical Service Bulletin Group 19 number 15-61 dated July 7, 2015. Discontinuation and mixing of Audi-approved engine coolants. G11, G12, and G12+ coolants have been replaced by an improved version. Read More »

    • TSB #A191450 2025303-

      Date Announced:
      JUN 20, 2014
      NHTSA ID:
      #10122415

      Supersedes Technical Service Bulletin Group 19 number 13-41 dated June 20, 2013. Discontinuation and mixing of Audi-approved engine coolants. G11, G12, and G12+ coolants have been replaced by an improved version. Read More »

    • TSB #A191341 2025303-

      Date Announced:
      JUN 20, 2013
      NHTSA ID:
      #10123587

      Supersedes Technical Service Bulletin Group 19 number 13-35 dated March 25, 2013. Discontinuation and mixing of Audi-approved engine coolants. G11, G12, and G12+ coolants have been replaced by an improved version. Read More »

    • TSB #134120253033

      Date Announced:
      JUN 20, 2013
      NHTSA ID:
      #10216662

      Discontinuation and mixing of Audi-approved engine coolants. Read More »

    • TSB #133520253032

      Date Announced:
      APR 25, 2013
      NHTSA ID:
      #10216656

      Discontinuation and mixing of Audi-approved engine coolants. Read More »

    • TSB #A191335 2025303-

      Date Announced:
      MAR 25, 2013
      NHTSA ID:
      #10123882

      Supersedes Technical Service Bulletin Group 19 number 11-19 dated February 10, 2011. Discontinuation and mixing of Audi-approved engine coolants. G11, G12, and G12+ coolants have been replaced by an improved version. Read More »

    ENGINE AND ENGINE COOLING:COOLING SYSTEM

    EXTERIOR LIGHTING:HEADLIGHTS

    • TSB #20056243

      Date Announced:
      FEB 26, 2007
      NHTSA ID:
      #10022141

      HEADLIGHT AIMING, USING HELLA UNIVERSAL BEAMSETTER. *KB Read More »

    EQUIPMENT

    • TSB #SM 44-2017 EN

      Date Announced:
      JUN 28, 2017
      NHTSA ID:
      #10155644

      This special notice is to inform dealers to return all part numbers listed in the document and order the superseded part numbers going forward. Read More »

    • TSB #ATE-17-05

      Date Announced:
      MAR 03, 2017
      NHTSA ID:
      #10128222

      Due to increasing requests for high voltage personal protective equipment (HVE PPE) for dealer technicians working with high voltage vehicles (Hybrid, Plugin Hybrid, Electric Vehicle), the Volkswagen Tools and Equipment Team has ... Read More »

    EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL

    • TSB #Edition42

      Date Announced:
      JUL 01, 2013
      NHTSA ID:
      #10243787

      Audi Elsa Newsletter Read More »

    • TSB #A001348 2002047-

      Date Announced:
      APR 01, 2013
      NHTSA ID:
      #10123901

      Supersedes Technical Service Bulletin Group 00 number 11-19 dated April 8, 2011. This TSB contains information on technician preparation when calling the Audi Technical Assistance Center Read More »

    EQUIPMENT ADAPTIVE/MOBILITY

    • TSB #A901341 2010353-

      Date Announced:
      SEP 23, 2013
      NHTSA ID:
      #10121365

      Supersedes Technical Service Bulletin Group 90 number 10-14 dated August 10, 2010. Cigarette lighter element will not lock into the lighter socket -U1- to begin the heating process, or the lighter element will not automatically release ... Read More »

    UNKNOWN OR OTHER

    • TSB #AUD4927ENG

      Date Announced:
      JUL 10, 2014
      NHTSA ID:
      #10249054

      Due to new Minnesota state regulations regarding biofuels, biodiesel blends of B5 or less may not be available in the State of Minnesota. Read More »

    • TSB #Update91i8

      Date Announced:
      MAY 13, 2014
      NHTSA ID:
      #10249085

      Google Maps Street View (NVLW)) Read More »