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Service bulletins for the 2017 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.

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

By type

By component

By trouble code

Bulletins, newest first
122-G8N8N-032017-10-25. Service bulletin. FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP. There is a possibility that the fastening screws for the fuel collection pipes on the affected vehicles can shear off due to stress corrosion cracking. If this happens, the high fuel pressure that builds up in the fuel injection system when the engine is running can press the relevant fuel collection pipe off the fuel injectors. This can cause a fuel leak in the engine compartment. Remedial Action: Replace fastening screws for both fuel collection pipes.
122-W4G8S-102017-10-15. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ELECTRICAL SYSTEM. Technical Concern: By design, the vehicle gateway allows certain vehicle features to time-out, in stages. This allows the vehicle to sleep. One feature that can time-out is the 12 V DC power point (cigarette lighter) in the center console area. One of the recommended methods of using the battery maintainer is to plug the battery maintainer into this power point. If this power point becomes disabled, it will not allow current flow from the battery maintainer to the vehicle, the vehicle battery will not trickle charge, and the battery maintainer will eventually shut off.
122-V9G5G-102017-10-15. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. Information: This was caused by poor welding of the fixed gear. The fastening process has been changed. Resolution: Replace the transmission. Refer to WM343519 for the proper replacement procedure.

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