Porsche Panamera 2017–2026 — technical service bulletin

Bulletin 51/26 · NHTSA communication 11035934 · issued Jul 30, 2026

Technical service bulletin

communication type

Power Train

component

2017–2026

model years

vehicle entries

Official summary

Shrill Humming/Clacking Noise from the Engine Compartment: Check Mounting/Fastening of the ATF Cooler and/or ATF Lines (SY 51/26)

Vehicles covered

2017 Porsche Panamera
2018 Porsche Panamera
2019 Porsche Panamera
2020 Porsche Panamera
2021 Porsche Panamera
2022 Porsche Panamera
2023 Porsche Panamera
2024 Porsche Panamera
2025 Porsche Panamera
2026 Porsche Panamera
2017 Porsche Panamera 4
2018 Porsche Panamera 4
2019 Porsche Panamera 4
2020 Porsche Panamera 4
2021 Porsche Panamera 4
2022 Porsche Panamera 4
2023 Porsche Panamera 4
2024 Porsche Panamera 4
2026 Porsche Panamera 4
2017 Porsche Panamera 4 E-Hybrid
2018 Porsche Panamera 4 E-Hybrid
2019 Porsche Panamera 4 E-Hybrid
2020 Porsche Panamera 4 E-Hybrid
2021 Porsche Panamera 4 E-Hybrid
2022 Porsche Panamera 4 E-Hybrid
2023 Porsche Panamera 4 E-Hybrid
2024 Porsche Panamera 4 E-Hybrid
2025 Porsche Panamera 4 E-Hybrid
2026 Porsche Panamera 4 E-Hybrid
2018 Porsche Panamera 4 Executive
2019 Porsche Panamera 4 Executive
2020 Porsche Panamera 4 Executive
2021 Porsche Panamera 4 Executive
2022 Porsche Panamera 4 Executive
2023 Porsche Panamera 4 Executive
2024 Porsche Panamera 4 Executive
2018 Porsche Panamera 4 Hybrid
2018 Porsche Panamera 4 Hybrid Executi
2018 Porsche Panamera 4 Hybrid Sport T
2017 Porsche Panamera 4S
2018 Porsche Panamera 4S
2019 Porsche Panamera 4S
2020 Porsche Panamera 4S
2021 Porsche Panamera 4S
2022 Porsche Panamera 4S
2023 Porsche Panamera 4S
2024 Porsche Panamera 4S
2019 Porsche Panamera 4S E-Hybrid
2020 Porsche Panamera 4S E-Hybrid
2021 Porsche Panamera 4S E-Hybrid
2022 Porsche Panamera 4S E-Hybrid
2023 Porsche Panamera 4S E-Hybrid
2025 Porsche Panamera 4S E-Hybrid
2026 Porsche Panamera 4S E-Hybrid
2017 Porsche Panamera 4S Executive
2018 Porsche Panamera 4S Executive
2019 Porsche Panamera 4S Executive
2020 Porsche Panamera 4S Executive
2021 Porsche Panamera 4S Executive
2022 Porsche Panamera 4S Executive

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.