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Service bulletins for the 2021 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.

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

Warranty extensions
No. 43-262026-10-02. VISIBILITY/WIPER; ELECTRICAL SYSTEM. Technical Information for Warranty Extension for Front Door Wiring Harness related to Real Top View (RTV) issues
18/262026-08-06. POWER TRAIN. Warranty Information: Warranty Extension for Transmission Electronics Control Unit (18/26)

A warranty extension may pay for a repair after the basic warranty has ended. Read the document for which vehicles and which repair it covers.

By type

By component

By trouble code

Bulletins, newest first
SPTL26092026-10-02. Service bulletin. WHEELS; STEERING; SUSPENSION. Special Tools and Equipment Information for alignment machines - Q3 2026 Software Spec Update Available
No. 64-26-12026-10-02. Service bulletin. STEERING; WHEELS; SUSPENSION. Technical Information for Yellow Warning Message "Rear Axle Steering Has Failed" in Instrument Cluster: Replace Servo Motors for Rear Axle Steering
No. 35-262026-10-02. Service bulletin. WHEELS. Manufacturer's Certificate for Approval: Wheels and Tires
No. 96-262026-10-02. Service bulletin. VISIBILITY/WIPER; STRUCTURE:BODY. Symptom-based workshop manual for Noises from Front Wiper Blade
No. 92-262026-10-02. Service bulletin. STRUCTURE:BODY; VISIBILITY/WIPER. Technical Information for Wind Noises when Driving from the Sunroof Area
No. 91-262026-10-02. Service bulletin. POWER TRAIN; ENGINE. Technical Information for Particles/Metal Chips/Residues in Engine Oil
No. 32-262026-10-02. Service bulletin. POWER TRAIN; ENGINE. Manufacturer's Certificate for Overview of approved Porsche C40 GT engine oils
No. 31-262026-10-02. Service bulletin. POWER TRAIN; ENGINE. Manufacturer's Certificate for Overview of Approved Porsche C40 Engine Oils
No. 30-262026-10-02. Service bulletin. ENGINE; POWER TRAIN. Manufacturer's Certificate for Overview of Approved Porsche C20 Engine Oils
No. 29-262026-10-02. Service bulletin. ENGINE; POWER TRAIN. Manufacturer's Certificate for Overview of Approved Porsche C30 Engine Oils
No. 86-262026-10-02. Service bulletin. ELECTRICAL SYSTEM; EXTERIOR LIGHTING. Technical Information for Vehicle Color in Front Display/Control Panel Wrong after Replacing Central Computer (PCM)
No. 36-262026-10-02. Service bulletin. POWER TRAIN; ENGINE. Manufacturer's Certificate for Overview of Approved Porsche C40 Engine Oils
No. 12-262026-10-02. Service bulletin. ELECTRICAL SYSTEM. Technical Information for Damage to Nano Plug Contacts Due to Utilization of Incorrect Measuring Equipment
No. 43-262026-10-02. Warranty extension. VISIBILITY/WIPER; ELECTRICAL SYSTEM. Technical Information for Warranty Extension for Front Door Wiring Harness related to Real Top View (RTV) issues
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
No. 2109-32026-09-04. Service bulletin. ELECTRICAL SYSTEM. Information on Advanced Technical Information for Critical 12V Li-ion Battery Recycling
No. 11-25-42026-09-04. Service bulletin. FORWARD COLLISION AVOIDANCE: WARNINGS; LANE DEPARTURE: ASSIST; FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL; BACK OVER PREVENTION: REARVIEW SYSTEM BRAKING; FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING. Technical Information for White Messages Regarding Driver Assistance Systems in Conjunction with Passive Fault Memory Entries in the ZFAS Control Unit
No. 75-252026-09-04. Service bulletin. LANE DEPARTURE: ASSIST; BACK OVER PREVENTION: REARVIEW SYSTEM BRAKING; FORWARD COLLISION AVOIDANCE: WARNINGS; FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING; FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL. Technical Information for Various White Messages Regarding Driver Assistance Systems/Fault Memory Entry "C12D5FA" in the ZFAS Control Unit
No. 76-262026-09-04. Service bulletin. VISIBILITY/WIPER. Technical Information for Replacement Requirement for Left Door Window Pane - Change of Supplier: Using the Door Window Panes of the 911 (992PA).
No. 63-262026-09-04. Service bulletin. SUSPENSION. Symptom-based workshop manual for Creaking Noise from the Front End of the Vehicle.
No. 64-262026-09-04. Service bulletin. SUSPENSION; STEERING. Technical Information for Yellow Warning Message "Rear Axle Steering Has Failed" in Instrument Cluster: Replace Servo Motors for Rear Axle Steering
24-262026-09-04. Service bulletin. WHEELS. Manufacturer's Certificate for approved wheels and tires. Also includes model year 2024 911 S/T and GT3 Touring.

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