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Service bulletins for the 2021 Porsche 718 Cayman

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.

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

Warranty extensions
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.

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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. 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. 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
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
74/252026-08-06. Service bulletin. AIR BAGS. Belt Lock Warning on Driver Side Permanently Active / No Fault Memory Entries: Delete Airbag Control Unit Fault Memory (SY 74/25)
18/262026-08-06. Warranty extension. POWER TRAIN. Warranty Information: Warranty Extension for Transmission Electronics Control Unit (18/26)
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.