Technical Service Bulletins (TSBs) for the 1999 911 are official communications between Porsche & 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.

    SERVICE BRAKES, HYDRAULIC:POWER ASSIST:VACUUM:HOSES, LINES/PIPING, AND FITTINGS

    • TSB #2454

      Date Announced:
      SEP 10, 1998
      NHTSA ID:
      #609790

      RECOMMENDED PROCEDURES WHEN WORKING WITH VACUUM LINES AND HOSES. YD Read More »

    ENGINE AND ENGINE COOLING:ENGINE

    • TSB #101005

      Date Announced:
      OCT 10, 2005
      NHTSA ID:
      #10018155

      HANDLING PTFE CRANKSHAFT SEALS. 8JB Read More »

    ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE

    • TSB #2634

      Date Announced:
      SEP 10, 1998
      NHTSA ID:
      #609853

      INSTALLATION OF CHROME PLATED TAILPIPES. Read More »

    FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS

    • TSB #D76

      Date Announced:
      MAY 08, 2008
      NHTSA ID:
      #10025182

      PARTS WITHDRAWN. PORSCHE CARS NORTH AMERIC REQUESTS RETURN OF THE FOLLOWING UNIT TO PCNA, BUT ONLY IN CASES WHERE THE DEFECT IS VISIBLE: PART NUMBER 955 110 235 01, DESCRIPTION FUEL LINE. *PE Read More »

    POWER TRAIN:AUTOMATIC TRANSMISSION

    • TSB #3735

      Date Announced:
      SEP 10, 1998
      NHTSA ID:
      #609898

      THE REPLACEMENT OF TIPTRONIC TRANSMISSION.YD Read More »

    ELECTRICAL SYSTEM:IGNITION

    • TSB #2870

      Date Announced:
      JAN 01, 1998
      NHTSA ID:
      #603128

      TECHNICAL INFORMATION REGARDING NEW SPARK PLUGS. *YC Read More »

    EXTERIOR LIGHTING:HEADLIGHTS

    • TSB #599

      Date Announced:
      NOV 11, 2002
      NHTSA ID:
      #10000532

      PORSCHE LITRONIC HEADLIGHT RETROFIT KIT. *TT Read More »

    VISIBILITY:WINDSHIELD WIPER/WASHER:SWITCH/WIRING

    • TSB #D77

      Date Announced:
      MAY 21, 2008
      NHTSA ID:
      #10025186

      PARTS WITHDRAW; PORSCHE CARS NORTH AMERICA REQUESTS RETURN OF THE FOLLOWING UNITS TO PCNA: PART NUMBERS 955 628 320 00 AND 955 628 321 00; DESCRIPTION TIP SWITCH. *PE Read More »

    STRUCTURE:BODY

    • TSB #0913

      Date Announced:
      SEP 10, 1998
      NHTSA ID:
      #609788

      ASSEMBLING THE HARDTOP AND WHEEL STORAGE SYSTEM AND WALL MOUNTED HOLDER. YD Read More »

    EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL

    • TSB #798

      Date Announced:
      JUL 23, 1998
      NHTSA ID:
      #602295

      CONCERNS REGARDING THE ADDITIONS / CORRECTIONS TO THE OWNER'S MANUAL. *YC Read More »

    UNKNOWN OR OTHER

    • TSB #PK-D8-16

      Date Announced:
      MAR 02, 2011
      NHTSA ID:
      #10038544

      PORSCHE: INFORMATION ON HOW TO READ THE VIN. *RM Read More »

    • TSB #0203

      Date Announced:
      AUG 16, 2002
      NHTSA ID:
      #10010766

      EXCHANGE ENGINES AND TRANSMISSIONS FOR WARRANTY. THIS BULLETIN REPLACES BULLETIN WTY0203 DATED 2-15-02. *TT Read More »

    • TSB #9160

      Date Announced:
      JAN 01, 2001
      NHTSA ID:
      #621480

      TECHNICAL PROCEDURES FOR INSTALLING THE RADIO FACEPLATE. *TT Read More »