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April 17, 2026 Service bulletin

Instructions on advanced technical information for 718 GTS 4.0

Porsche technical service bulletin No. 2309.3 for 2021, 2023 Porsche 718 Cayman, 2021-2023 Porsche 718 Boxster and 2021-2024 Porsche 718 Boxster GTS and others.

Bulletin number
No. 2309.3
Component
Service brakes
Summary
Instructions on advanced technical information for 718 GTS 4.0 - Brake Booster (Power Brake) Warning in Instrument Cluster

Owners of these vehicles have filed 2 complaints in the brakes category.

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