Porsche Cayenne 2019–2026 — technical service bulletin
Bulletin No. 174-23 · NHTSA communication 11028571 · issued Jan 28, 2026
Technical service bulletin
communication type
Electrical System
component
2019–2026
model years
60
vehicle entries
Official summary
Technical information for Little or No Cooling Power from the Air-Conditioning System: Checking Refrigerant Lines on Air-Conditioning Compressor
Vehicles covered
- 2019 Porsche Cayenne
- 2020 Porsche Cayenne
- 2021 Porsche Cayenne
- 2022 Porsche Cayenne
- 2023 Porsche Cayenne
- 2024 Porsche Cayenne
- 2025 Porsche Cayenne
- 2026 Porsche Cayenne
- 2024 Porsche Cayenne Coupe
- 2025 Porsche Cayenne Coupe
- 2026 Porsche Cayenne Coupe
- 2019 Porsche Cayenne E-Hybrid
- 2020 Porsche Cayenne E-Hybrid
- 2021 Porsche Cayenne E-Hybrid
- 2022 Porsche Cayenne E-Hybrid
- 2023 Porsche Cayenne E-Hybrid
- 2024 Porsche Cayenne E-Hybrid
- 2025 Porsche Cayenne E-Hybrid
- 2026 Porsche Cayenne E-Hybrid
- 2024 Porsche Cayenne E-Hybrid Coupe
- 2025 Porsche Cayenne E-Hybrid Coupe
- 2026 Porsche Cayenne E-Hybrid Coupe
- 2020 Porsche Cayenne GT
- 2021 Porsche Cayenne GT
- 2022 Porsche Cayenne GT
- 2021 Porsche Cayenne GTS
- 2022 Porsche Cayenne GTS
- 2023 Porsche Cayenne GTS
- 2024 Porsche Cayenne GTS
- 2025 Porsche Cayenne GTS
- 2026 Porsche Cayenne GTS
- 2024 Porsche Cayenne GTS Coupe
- 2025 Porsche Cayenne GTS Coupe
- 2026 Porsche Cayenne GTS Coupe
- 2019 Porsche Cayenne S
- 2020 Porsche Cayenne S
- 2021 Porsche Cayenne S
- 2022 Porsche Cayenne S
- 2023 Porsche Cayenne S
- 2024 Porsche Cayenne S
- 2024 Porsche Cayenne S Coupe
- 2025 Porsche Cayenne S Coupe
- 2026 Porsche Cayenne S Coupe
- 2020 Porsche Cayenne S E-Hybrid
- 2019 Porsche Cayenne Turbo
- 2020 Porsche Cayenne Turbo
- 2023 Porsche Cayenne Turbo
- 2020 Porsche Cayenne Turbo Coupe
- 2024 Porsche Cayenne Turbo E-Hybrid
- 2025 Porsche Cayenne Turbo E-Hybrid
- 2026 Porsche Cayenne Turbo E-Hybrid
- 2024 Porsche Cayenne Turbo E-Hybrid Coupe
- 2025 Porsche Cayenne Turbo E-Hybrid Coupe
- 2026 Porsche Cayenne Turbo E-Hybrid Coupe
- 2022 Porsche Cayenne Turbo GT
- 2023 Porsche Cayenne Turbo GT
- 2024 Porsche Cayenne Turbo GT
- 2025 Porsche Cayenne Turbo GT Coupe
- 2019 Porsche Cayenne Turbo S E-Hybrid
- 2020 Porsche Cayenne Turbo S E-Hybrid
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.