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Service bulletins for the 2004 Porsche 911

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

409 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Bulletins, newest first
GR13D801-12026-10-02. Service bulletin. UNKNOWN OR OTHER; ELECTRICAL SYSTEM. Parts Information for Parts Withdrawal - Radio & Satellite Radio Receiver. Note that part 91164559100 is also applicable to the following models not in the product list: 911 (1970-1989), 914 (1970-1976), 924 (1976-1985), 924S (1986-1988), 928 (1978-1995), 944 (1982-1991), 964 (1989-1994), 968 (1992-1995), and 993 (1994-1998). Note that part 99664259100 is also applicable to the following models not in the product list: 996 (1998-2001), 986 Boxster (1997-2001).
SPTL26092026-10-02. Service bulletin. WHEELS; STEERING; SUSPENSION. Special Tools and Equipment Information for alignment machines - Q3 2026 Software Spec Update Available
No. 28-262026-10-02. Service bulletin. POWER TRAIN; ENGINE. Manufacturer's Certificate for Overview of Approved Porsche C40 Engine Oils. Note that this bulletin covers all models back to model year 1984, for which C40 engine oils are allocated.
No. 27-262026-10-02. Service bulletin. POWER TRAIN; ENGINE. Manufacturer's Certificate for Overview of Approved Porsche C20 Engine Oils. Note that the bulletin covers all models back to model year 1984, for which C20 engine oils are allocated.
No. 26-262026-10-02. Service bulletin. ENGINE; POWER TRAIN. Manufacturer's Certificate for Overview of Approved Porsche C30 Engine Oils. Note that the bulletin includes all models back to model year 1984, for which C30 engine oils are allocated.
No. 25-262026-10-02. Service bulletin. POWER TRAIN; ENGINE. Manufacturer's Certificate for Overview of Approved Porsche A40 Engine Oils. Note that this bulletin covers all vehicles from model year 1997 to 2020, for which A40 engine oils are assigned. Model years 1997-2001 are not available for selection in the system.
No. 12-262026-10-02. Service bulletin. ELECTRICAL SYSTEM. Technical Information for Damage to Nano Plug Contacts Due to Utilization of Incorrect Measuring Equipment
SPTL2314a2026-09-04. Service bulletin. UNKNOWN OR OTHER. Special Tools and Equipment Information for Diagnostic Equipment Standards for all USA Porsche Centers
SPTL26082026-09-04. Service bulletin. WHEELS; SUSPENSION; STEERING. Special Tools and Equipment Information for alignment machines - Q2 2026 Software Spec Update Available
GR16D8a2026-09-04. Service bulletin. UNKNOWN OR OTHER. Product Knowledge for Model Type Designations
GR16D82026-09-04. Service bulletin. UNKNOWN OR OTHER. Product Knowledge for Chassis/VIN Numbering Systems
GR13D8012026-09-04. Service bulletin. ELECTRICAL SYSTEM. Parts Information for Parts Withdrawal - Radio & Satellite Radio Receiver. Note that part 91164559100 is also applicable to the following models not in the product list: 911 (1970-1989), 914 (1970-1976), 924 (1976-1985), 924S (1986-1988), 928 (1978-1995), 944 (1982-1991), 964 (1989-1994), 968 (1992-1995), and 993 (1994-1998). Note that part 99664259100 is also applicable to the following models not in the product list: 996 (1998-2001), 986 Boxster (1997-2001).
13/262026-08-06. Service bulletin. ENGINE. Allocation of Approved Engine Oils MY 2027 (13/26)
SPTL 2607a2026-08-05. Service bulletin. UNKNOWN OR OTHER. VAS 621001A Matrix Headlamp Aimer – Automatic Shipment / Maha Installation
SPTL 26072026-08-05. Service bulletin. UNKNOWN OR OTHER. VAS 621001A Matrix Headlamp Aimer – Automatic Shipment / Maha Installation
SPTL 2603b2026-08-05. Service bulletin. STRUCTURE:BODY. Porsche Approved Collision Center – Acquiring Special Tools and Equipment
SPTL 2603b2026-08-05. Service bulletin. STRUCTURE:BODY. Porsche Approved Collision Center – Acquiring Special Tools and Equipment
TSTR 26422026-08-05. Service bulletin. UNKNOWN OR OTHER. Porsche Tester Software Update Information Software Version: 44.300.000
TSTR 26412026-08-05. Service bulletin. UNKNOWN OR OTHER. PiUS Update Information Software Version: 3.2
TSTR 26412026-08-05. Service bulletin. UNKNOWN OR OTHER. PiUS Update Information Software Version: 3.2
TSTR 26402026-08-05. Service bulletin. UNKNOWN OR OTHER. Porsche Tester Software Update Information Software Version: 44.200.051
TSTR 26392026-08-05. Service bulletin. UNKNOWN OR OTHER. Porsche Tester Software Update Information Software Version: 44.200.041
TSTR 26382026-08-05. Service bulletin. UNKNOWN OR OTHER. Porsche Tester Software Update Information Software Version: 44.200.040
TSTR 26372026-08-05. Service bulletin. UNKNOWN OR OTHER. Porsche Tester Software Update Information Software Version: 44.200.035
GR13D7902026-07-08. Other. ELECTRICAL SYSTEM; ENGINE. Parts Withdrawal - Various Parts

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.