Technical Service Bulletins (TSBs) for the 2001 A4 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.

    STEERING:HYDRAULIC POWER ASSIST:PUMP

    • TSB #092603

      Date Announced:
      SEP 26, 2003
      NHTSA ID:
      #10006830

      ZF VH RECALL OF THE ZF STEERING PUMP, SUPPLIED TO WD'S FOR REPLACEMENT OF THE AUDI A4 PASSAT P/N 8D0 145 156FX INSTEAD OF THE CORRECT ZF P/N 7691 955 276ZW. 2004 AUDI A4 ALSO INCLUDED. *TT Read More »

    SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP

    • TSB #TSB-45-08-04

      Date Announced:
      NOV 19, 2008
      NHTSA ID:
      #10028008

      AUDI: ABS ACTIVATES DURING LIGHT BRAKE APPLICATION . CONTROL NOISES ARE HEARD FROM THE ABS UNIT AT LOW SPEED WITHOUT BRAKE APPLICATION. *PE Read More »

    SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE

    • TSB #TSB-45-08-04

      Date Announced:
      NOV 19, 2008
      NHTSA ID:
      #10028008

      AUDI: ABS ACTIVATES DURING LIGHT BRAKE APPLICATION . CONTROL NOISES ARE HEARD FROM THE ABS UNIT AT LOW SPEED WITHOUT BRAKE APPLICATION. *PE Read More »

    SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:WHEEL SPEED SENSOR

    • TSB #TSB-45-08-04

      Date Announced:
      NOV 19, 2008
      NHTSA ID:
      #10028008

      AUDI: ABS ACTIVATES DURING LIGHT BRAKE APPLICATION . CONTROL NOISES ARE HEARD FROM THE ABS UNIT AT LOW SPEED WITHOUT BRAKE APPLICATION. *PE Read More »

    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 #AWA-08-04

      Date Announced:
      MAR 05, 2008
      NHTSA ID:
      #10025081

      ENGINE COOLANT TEMPERATURE SENSOR WARRANTY EXTENSION FOR CERTAIN 2001-2004 MODEL YEAR AUDI VEHICLES. *PE Read More »

    • TSB #190504

      Date Announced:
      MAY 16, 2005
      NHTSA ID:
      #10015583

      THE COOLANT RESERVOIR IS DIAGNOSED TO BE LEAKING AND INTENDED TO BE REPLACED. *TT Read More »

    ENGINE AND ENGINE COOLING:ENGINE

    • TSB #TSB-01-12-39

      Date Announced:
      JAN 12, 2012
      NHTSA ID:
      #10043525

      AUDI: ENGINE HAS REDUCED ENGINE PERFORMANCE WITHOUT LOSS OF POWER OR STALLING; CIRCUIT GROUNDS; FUEL QUALITY POOR; MIL IS CONSTANTLY ILLUMINATED OR FLASHING; ROUGH IDLE; IGNITION COILS INCORRECTLY INSTALLED; ELECTRICAL CONNECTIONS LOOSE ... Read More »

    • TSB #17 08 03

      Date Announced:
      MAR 11, 2008
      NHTSA ID:
      #10024407

      ENGINE OIL PRESSURE TOO LOW - ENGINE FLUSH. *NJ UPDATED 4/30/08. *NJ Read More »

    • TSB #2012833

      Date Announced:
      MAY 17, 2007
      NHTSA ID:
      #10021439

      ENGINE OIL PRESSURE TOO LOW - ENGINE FLUSH. *KB Read More »

    • TSB #20036582

      Date Announced:
      FEB 26, 2007
      NHTSA ID:
      #10022142

      LOSES POWER OR WILL NOT MOVE AFTER STOP. *KB Read More »

    • TSB #0604

      Date Announced:
      APR 07, 2006
      NHTSA ID:
      #10020721

      OIL SLUDGE LIMITED WARRANTY EXTENSION. *KB Read More »

    • TSB #0431

      Date Announced:
      AUG 11, 2005
      NHTSA ID:
      #10016508

      REPAIRS OF OIL SLUDGE RELATED PROBLEMS. *TT Read More »

    • TSB #0402

      Date Announced:
      JUL 26, 2005
      NHTSA ID:
      #10015982

      ENGINE OIL SPECIFICATIONS, OIL CAPACITY, OIL FILTER. TO INCLUDE AUDI 24 2006. *TT Read More »

    • TSB #0402

      Date Announced:
      AUG 31, 2004
      NHTSA ID:
      #10009879

      VALVE COVER, DIAGNOSING OIL LEAKAGE FROM GASKETS. *TT Read More »

    • TSB #0420

      Date Announced:
      AUG 26, 2004
      NHTSA ID:
      #10009876

      OIL SLUDGE - WARRANTY EXTENSION. SERVICE CIRCULAR - WARRANTY. *TT Read More »

    • TSB #0401

      Date Announced:
      AUG 05, 2004
      NHTSA ID:
      #10009880

      ENGINE OIL SPECIFICATIONS, OIL CAPACITY, OIL FILTER. *TT THIS BULLETIN REPLACES BULLETIN 04-01 DATED JAN. 12, 2004. 2004 CABRIOLET, AUDI INCLUDED. *TT Read More »

    • TSB #0403

      Date Announced:
      AUG 05, 2004
      NHTSA ID:
      #10009881

      LOW ENGINE OIL PRESSURE LIGHT IS ON. AUDI CABRIOLET 2004 INCLUDED. *TT Read More »

    • TSB #0420

      Date Announced:
      AUG 01, 2004
      NHTSA ID:
      #10009900

      WARRANTY EXTENSION COVERING CERTAIN OIL SLUDGE RELATED REPAIRS. *TT Read More »

    ENGINE AND ENGINE COOLING:ENGINE:GASOLINE

    • TSB #SAC-28F2-REV

      Date Announced:
      AUG 01, 2010
      NHTSA ID:
      #10036497

      AUDI: GASOLINE ENGINE VEHICLES; INSPECT, AND IF NECESSARY, REPLACE IGNITION COILS. VEHICLES AFFECTED BY THIS ACTION MAY HAVE IGNITION COILS THAT COULD MALFUNCTION UNDER CERTAIN CONDITIONS. ADDED FINAL MAILING PHASE-8/10 VIN INFORMATION. Read More »

    • TSB #SA-28F2 J1

      Date Announced:
      MAY 01, 2010
      NHTSA ID:
      #10033212

      AUDI: (REVISED) VEHICLES AFFECTED BY THIS ACTION MAY HAVE IGNITION COILS THAT COULD MALFUNCTION UNDER CERTAIN CONDITIONS. Read More »

    ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:BELTS AND ASSOCIATED PULLEYS

    • TSB #15-D-4-JZ

      Date Announced:
      AUG 05, 2008
      NHTSA ID:
      #10026544

      AUDI: THE INTERNAL ENGINE DAMAGE RESULTING FROM A BROKEN TIMING BELT. IF THE TIMING BELT OF VEHICLE WERE TO BREAK, THE ENGINE WILL NOT RUN AND MAY SUSTAIN SERIOUS INTERNAL DAMAGE. *PE Read More »

    • TSB #15D4/JZ

      Date Announced:
      AUG 05, 2008
      NHTSA ID:
      #10026742

      AUDI SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. INTERNAL ENGINE DAMAGE RESULTING FROM A BROKEN TIMING BELT. IF TIMING BELT OF VEHICLE WERE TO BREAK, THE ENGINE WILL NOT RUN AND MAY SUSTAIN SERIOUS INTERNAL DAMAGE. Read More »

    ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER

    • TSB #101508

      Date Announced:
      JUL 01, 2008
      NHTSA ID:
      #10026284

      AUDI SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. CSC LETTER WAS RECEIVED FOR AUDI MODEL YEARS 2000-2003 A4 AND TT. Read More »

    ENGINE AND ENGINE COOLING:ENGINE:OTHER FUEL TYPES:TURBO/SUPERCHARGER

    • TSB #101508

      Date Announced:
      JUL 01, 2008
      NHTSA ID:
      #10026284

      AUDI SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. CSC LETTER WAS RECEIVED FOR AUDI MODEL YEARS 2000-2003 A4 AND TT. Read More »

    ENGINE AND ENGINE COOLING:COOLING SYSTEM

    • TSB #AWA-08-03

      Date Announced:
      FEB 11, 2008
      NHTSA ID:
      #10025301

      AUDI SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. ENGINE COOLANT TEMPERATURE SENSOR WARRANTY EXTENSION FOR CERTAIN 2001-2004 AUDI MODEL YEAR VEHICLES. CSC WAS RECEIVED *PE Read More »

    ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS

    • TSB #0406

      Date Announced:
      DEC 13, 2004
      NHTSA ID:
      #10011880

      COOLANT LEAK AT OIL COOLER HOSES. *TT Read More »

    ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR

    • TSB #0502

      Date Announced:
      JUL 20, 2005
      NHTSA ID:
      #10015576

      UPDATE PROGRAMMING FOR CATALYTIC CONVERTER SYSTEM (IC). *TT UPDATE. *TT Read More »

    • TSB #0504

      Date Announced:
      JUL 20, 2005
      NHTSA ID:
      #10015999

      THREE WAY CATALYST, CATALYTIC EFFICIENCY DIAGNOSTIC TROUBLE CODES (DTCS) STORED IN DTC MEMORY. *TT Read More »

    FUEL SYSTEM, OTHER

    • TSB #0408

      Date Announced:
      SEP 10, 2004
      NHTSA ID:
      #10009732

      LONG TERM FUEL TRIM - SYSTEM TOO RICH. DIAGNOSTIC TROUBLE CODE P1123, P1125, P1137 AND P1139. *TT Read More »

    ELECTRICAL SYSTEM

    • TSB #TSB-01-12-39

      Date Announced:
      JAN 12, 2012
      NHTSA ID:
      #10043525

      AUDI: ENGINE HAS REDUCED ENGINE PERFORMANCE WITHOUT LOSS OF POWER OR STALLING; CIRCUIT GROUNDS; FUEL QUALITY POOR; MIL IS CONSTANTLY ILLUMINATED OR FLASHING; ROUGH IDLE; IGNITION COILS INCORRECTLY INSTALLED; ELECTRICAL CONNECTIONS LOOSE ... Read More »

    • TSB #0401

      Date Announced:
      JUN 11, 2004
      NHTSA ID:
      #10008077

      THROTTLE VALVE CONTROL MODULE - J338-, WILL NOT ADAPT. *MJ Read More »

    ELECTRICAL SYSTEM:IGNITION

    • TSB #SA-28F2 J1

      Date Announced:
      MAY 01, 2010
      NHTSA ID:
      #10033212

      AUDI: (REVISED) VEHICLES AFFECTED BY THIS ACTION MAY HAVE IGNITION COILS THAT COULD MALFUNCTION UNDER CERTAIN CONDITIONS. Read More »

    • TSB #09012006

      Date Announced:
      SEP 01, 2006
      NHTSA ID:
      #10020793

      IGNITION COILS MAY FAIL CAUSING A ROUGH IDLE OR REDUCED DRIVING POWER COULD OCCUR. *KB Read More »

    EXTERIOR LIGHTING:HEADLIGHTS

    EXTERIOR LIGHTING:HEADLIGHTS:CONCEALMENT DEVICES

    EXTERIOR LIGHTING:FOG LIGHTS

    EXTERIOR LIGHTING:TAIL LIGHTS

    EXTERIOR LIGHTING:BACK UP LIGHTS

    EXTERIOR LIGHTING:BRAKE LIGHTS

    EXTERIOR LIGHTING:HAZARD FLASHING WARNING LIGHTS

    STRUCTURE:BODY:TRUNK LID

    • TSB #550101

      Date Announced:
      SEP 28, 2001
      NHTSA ID:
      #627061

      SUBJECT REGARDING REAR LID, LUBRICATING HINGES TO ALLEVIATE STIFFNESS. *JG Read More »

    VEHICLE SPEED CONTROL

    • TSB #37-13-07

      Date Announced:
      MAY 29, 2013
      NHTSA ID:
      #10052307

      AUDI: SOME VEHICLES MAY LACK POWER OR WILL NOT MOVE AFTER STOP DUE TO SIMULTANEOUSLY DEPRESSING THE BRAKE AND ACCELERATOR PEDALS. *JS Read More »

    WHEELS:LUGS/NUTS/BOLTS/STUDS

    • TSB #TSB-44-08-14

      Date Announced:
      NOV 19, 2008
      NHTSA ID:
      #10027923

      AUDI: WHEEL BOLTS REQUIRE TORQUE ADJUSTMENT. TORQUE STICKS AND TORQUE EXTENSION BARS ARE NOT APPROVED BY AUDI OF AMERICA, INC. AND SHOULD NOT BE USED TO APPLY TORQUE TO WHEEL BOLTS. ALL AUDI MODELS INCLUDED. Read More »

    EQUIPMENT ADAPTIVE/MOBILITY

    • TSB #TSB-44-13-46

      Date Announced:
      DEC 09, 2013
      NHTSA ID:
      #10054859

      AUDI: ON CERTAIN VEHICLES, USE CALIBRATED TORQUE WRENCH AND NOT TORQUE STICKS, TORQUE EXTENSION BARS AND IMPACT GUNS/WRENCHES NOT APPROVED FOR USAGE ON WHEEL BOLTS BY MANUFACTURER, THAT CAN CAUSE DAMAGE TO BRAKE, STEERING WHEEL, HUB. Read More »