TSB: PORSCHE CAYENNE, CAYENNE E-HYBRID, CAYENNE GT, CAYENNE GTS, CAYENNE HYBRID, CAYENNE S, CAYENNE S HYBRID, CAYENNE TURBO, CAYENNE TURBO COUPE, CAYENNE TURBO GT, CAYENNE TURBO S E-HYBRID, CAYENNE TURBO S HYB COUPE (2019–2023)

Bulletin No. 166-21-1 — January 30, 2024

Bulletin Details

Bulletin IDNo. 166-21-1
ManufacturerPORSCHE
ModelsCAYENNE, CAYENNE E-HYBRID, CAYENNE GT, CAYENNE GTS, CAYENNE HYBRID, CAYENNE S, CAYENNE S HYBRID, CAYENNE TURBO, CAYENNE TURBO COUPE, CAYENNE TURBO GT, CAYENNE TURBO S E-HYBRID, CAYENNE TURBO S HYB COUPE
Model Years2019–2023
Date IssuedJanuary 30, 2024
Date Added to NHTSAFebruary 7, 2024
ComponentENGINE AND ENGINE COOLING
Vehicles Affected140 combinations

What is a TSB?

A Technical Service Bulletin is a document issued by the vehicle manufacturer to inform dealership technicians about a known issue and the recommended repair procedure. TSBs are not mandatory recalls — they serve as repair guidance for common problems.

If your vehicle has this issue, bring this bulletin ID to your dealer. If under warranty, the repair should be covered at no cost.

Summary

Technical information for Oil Leakage on Cylinder Head Cover: Insert Micro-Self-Locking Screw

Affected Vehicles

MakeModelYearComponent
PORSCHE CAYENNE 2023 060000 ENGINE AND ENGINE COOLING
PORSCHE CAYENNE 2023 350000 EQUIPMENT
PORSCHE CAYENNE 2023 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
PORSCHE CAYENNE 2023 061550 ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PIPES, HOSES, AND FITTINGS
PORSCHE CAYENNE E-HYBRID 2023 060000 ENGINE AND ENGINE COOLING
PORSCHE CAYENNE E-HYBRID 2023 350000 EQUIPMENT
PORSCHE CAYENNE E-HYBRID 2023 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
PORSCHE CAYENNE E-HYBRID 2023 061550 ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PIPES, HOSES, AND FITTINGS
PORSCHE CAYENNE GTS 2023 060000 ENGINE AND ENGINE COOLING
PORSCHE CAYENNE GTS 2023 350000 EQUIPMENT
PORSCHE CAYENNE GTS 2023 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
PORSCHE CAYENNE GTS 2023 061550 ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PIPES, HOSES, AND FITTINGS
PORSCHE CAYENNE S 2023 060000 ENGINE AND ENGINE COOLING
PORSCHE CAYENNE S 2023 350000 EQUIPMENT
PORSCHE CAYENNE S 2023 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
PORSCHE CAYENNE S 2023 061550 ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PIPES, HOSES, AND FITTINGS
PORSCHE CAYENNE TURBO 2023 060000 ENGINE AND ENGINE COOLING
PORSCHE CAYENNE TURBO 2023 350000 EQUIPMENT
PORSCHE CAYENNE TURBO 2023 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
PORSCHE CAYENNE TURBO 2023 061550 ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PIPES, HOSES, AND FITTINGS
PORSCHE CAYENNE TURBO GT 2023 060000 ENGINE AND ENGINE COOLING
PORSCHE CAYENNE TURBO GT 2023 350000 EQUIPMENT
PORSCHE CAYENNE TURBO GT 2023 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
PORSCHE CAYENNE TURBO GT 2023 061550 ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PIPES, HOSES, AND FITTINGS
PORSCHE CAYENNE TURBO S E-HYBRID 2023 060000 ENGINE AND ENGINE COOLING
PORSCHE CAYENNE TURBO S E-HYBRID 2023 350000 EQUIPMENT
PORSCHE CAYENNE TURBO S E-HYBRID 2023 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
PORSCHE CAYENNE TURBO S E-HYBRID 2023 061550 ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PIPES, HOSES, AND FITTINGS
PORSCHE CAYENNE 2022 060000 ENGINE AND ENGINE COOLING
PORSCHE CAYENNE 2022 350000 EQUIPMENT
PORSCHE CAYENNE 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
PORSCHE CAYENNE 2022 061550 ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PIPES, HOSES, AND FITTINGS
PORSCHE CAYENNE E-HYBRID 2022 060000 ENGINE AND ENGINE COOLING
PORSCHE CAYENNE E-HYBRID 2022 350000 EQUIPMENT
PORSCHE CAYENNE E-HYBRID 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
PORSCHE CAYENNE E-HYBRID 2022 061550 ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PIPES, HOSES, AND FITTINGS
PORSCHE CAYENNE GT 2022 060000 ENGINE AND ENGINE COOLING
PORSCHE CAYENNE GT 2022 350000 EQUIPMENT
PORSCHE CAYENNE GT 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
PORSCHE CAYENNE GT 2022 061550 ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PIPES, HOSES, AND FITTINGS
PORSCHE CAYENNE GTS 2022 060000 ENGINE AND ENGINE COOLING
PORSCHE CAYENNE GTS 2022 350000 EQUIPMENT
PORSCHE CAYENNE GTS 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
PORSCHE CAYENNE GTS 2022 061550 ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PIPES, HOSES, AND FITTINGS
PORSCHE CAYENNE S 2022 060000 ENGINE AND ENGINE COOLING
PORSCHE CAYENNE S 2022 350000 EQUIPMENT
PORSCHE CAYENNE S 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
PORSCHE CAYENNE S 2022 061550 ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PIPES, HOSES, AND FITTINGS
PORSCHE CAYENNE TURBO GT 2022 060000 ENGINE AND ENGINE COOLING
PORSCHE CAYENNE TURBO GT 2022 350000 EQUIPMENT
PORSCHE CAYENNE TURBO GT 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
PORSCHE CAYENNE TURBO GT 2022 061550 ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PIPES, HOSES, AND FITTINGS
PORSCHE CAYENNE TURBO S E-HYBRID 2022 060000 ENGINE AND ENGINE COOLING
PORSCHE CAYENNE TURBO S E-HYBRID 2022 350000 EQUIPMENT
PORSCHE CAYENNE TURBO S E-HYBRID 2022 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
PORSCHE CAYENNE TURBO S E-HYBRID 2022 061550 ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PIPES, HOSES, AND FITTINGS
PORSCHE CAYENNE 2021 060000 ENGINE AND ENGINE COOLING
PORSCHE CAYENNE 2021 350000 EQUIPMENT
PORSCHE CAYENNE 2021 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
PORSCHE CAYENNE 2021 061550 ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PIPES, HOSES, AND FITTINGS
PORSCHE CAYENNE E-HYBRID 2021 060000 ENGINE AND ENGINE COOLING
PORSCHE CAYENNE E-HYBRID 2021 350000 EQUIPMENT
PORSCHE CAYENNE E-HYBRID 2021 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
PORSCHE CAYENNE E-HYBRID 2021 061550 ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PIPES, HOSES, AND FITTINGS
PORSCHE CAYENNE GT 2021 060000 ENGINE AND ENGINE COOLING
PORSCHE CAYENNE GT 2021 350000 EQUIPMENT
PORSCHE CAYENNE GT 2021 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
PORSCHE CAYENNE GT 2021 061550 ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PIPES, HOSES, AND FITTINGS
PORSCHE CAYENNE GTS 2021 060000 ENGINE AND ENGINE COOLING
PORSCHE CAYENNE GTS 2021 350000 EQUIPMENT
PORSCHE CAYENNE GTS 2021 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
PORSCHE CAYENNE GTS 2021 061550 ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PIPES, HOSES, AND FITTINGS
PORSCHE CAYENNE S 2021 060000 ENGINE AND ENGINE COOLING
PORSCHE CAYENNE S 2021 350000 EQUIPMENT
PORSCHE CAYENNE S 2021 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
PORSCHE CAYENNE S 2021 061550 ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PIPES, HOSES, AND FITTINGS
PORSCHE CAYENNE TURBO S E-HYBRID 2021 060000 ENGINE AND ENGINE COOLING
PORSCHE CAYENNE TURBO S E-HYBRID 2021 350000 EQUIPMENT
PORSCHE CAYENNE TURBO S E-HYBRID 2021 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
PORSCHE CAYENNE TURBO S E-HYBRID 2021 061550 ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PIPES, HOSES, AND FITTINGS
PORSCHE CAYENNE 2020 060000 ENGINE AND ENGINE COOLING
PORSCHE CAYENNE 2020 350000 EQUIPMENT
PORSCHE CAYENNE 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
PORSCHE CAYENNE 2020 061550 ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PIPES, HOSES, AND FITTINGS
PORSCHE CAYENNE E-HYBRID 2020 060000 ENGINE AND ENGINE COOLING
PORSCHE CAYENNE E-HYBRID 2020 350000 EQUIPMENT
PORSCHE CAYENNE E-HYBRID 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
PORSCHE CAYENNE E-HYBRID 2020 061550 ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PIPES, HOSES, AND FITTINGS
PORSCHE CAYENNE GT 2020 060000 ENGINE AND ENGINE COOLING
PORSCHE CAYENNE GT 2020 350000 EQUIPMENT
PORSCHE CAYENNE GT 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
PORSCHE CAYENNE GT 2020 061550 ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PIPES, HOSES, AND FITTINGS
PORSCHE CAYENNE HYBRID 2020 060000 ENGINE AND ENGINE COOLING
PORSCHE CAYENNE HYBRID 2020 350000 EQUIPMENT
PORSCHE CAYENNE HYBRID 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
PORSCHE CAYENNE HYBRID 2020 061550 ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PIPES, HOSES, AND FITTINGS
PORSCHE CAYENNE S 2020 060000 ENGINE AND ENGINE COOLING
PORSCHE CAYENNE S 2020 350000 EQUIPMENT
PORSCHE CAYENNE S 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
PORSCHE CAYENNE S 2020 061550 ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PIPES, HOSES, AND FITTINGS
PORSCHE CAYENNE S HYBRID 2020 060000 ENGINE AND ENGINE COOLING
PORSCHE CAYENNE S HYBRID 2020 350000 EQUIPMENT
PORSCHE CAYENNE S HYBRID 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
PORSCHE CAYENNE S HYBRID 2020 061550 ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PIPES, HOSES, AND FITTINGS
PORSCHE CAYENNE TURBO 2020 060000 ENGINE AND ENGINE COOLING
PORSCHE CAYENNE TURBO 2020 350000 EQUIPMENT
PORSCHE CAYENNE TURBO 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
PORSCHE CAYENNE TURBO 2020 061550 ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PIPES, HOSES, AND FITTINGS
PORSCHE CAYENNE TURBO COUPE 2020 060000 ENGINE AND ENGINE COOLING
PORSCHE CAYENNE TURBO COUPE 2020 350000 EQUIPMENT
PORSCHE CAYENNE TURBO COUPE 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
PORSCHE CAYENNE TURBO COUPE 2020 061550 ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PIPES, HOSES, AND FITTINGS
PORSCHE CAYENNE TURBO S E-HYBRID 2020 060000 ENGINE AND ENGINE COOLING
PORSCHE CAYENNE TURBO S E-HYBRID 2020 350000 EQUIPMENT
PORSCHE CAYENNE TURBO S E-HYBRID 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
PORSCHE CAYENNE TURBO S E-HYBRID 2020 061550 ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PIPES, HOSES, AND FITTINGS
PORSCHE CAYENNE TURBO S HYB COUPE 2020 060000 ENGINE AND ENGINE COOLING
PORSCHE CAYENNE TURBO S HYB COUPE 2020 350000 EQUIPMENT
PORSCHE CAYENNE TURBO S HYB COUPE 2020 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
PORSCHE CAYENNE TURBO S HYB COUPE 2020 061550 ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PIPES, HOSES, AND FITTINGS
PORSCHE CAYENNE 2019 060000 ENGINE AND ENGINE COOLING
PORSCHE CAYENNE 2019 350000 EQUIPMENT
PORSCHE CAYENNE 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
PORSCHE CAYENNE 2019 061550 ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PIPES, HOSES, AND FITTINGS
PORSCHE CAYENNE E-HYBRID 2019 060000 ENGINE AND ENGINE COOLING
PORSCHE CAYENNE E-HYBRID 2019 350000 EQUIPMENT
PORSCHE CAYENNE E-HYBRID 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
PORSCHE CAYENNE E-HYBRID 2019 061550 ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PIPES, HOSES, AND FITTINGS
PORSCHE CAYENNE S 2019 060000 ENGINE AND ENGINE COOLING
PORSCHE CAYENNE S 2019 350000 EQUIPMENT
PORSCHE CAYENNE S 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
PORSCHE CAYENNE S 2019 061550 ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PIPES, HOSES, AND FITTINGS
PORSCHE CAYENNE TURBO 2019 060000 ENGINE AND ENGINE COOLING
PORSCHE CAYENNE TURBO 2019 350000 EQUIPMENT
PORSCHE CAYENNE TURBO 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
PORSCHE CAYENNE TURBO 2019 061550 ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PIPES, HOSES, AND FITTINGS
PORSCHE CAYENNE TURBO S E-HYBRID 2019 060000 ENGINE AND ENGINE COOLING
PORSCHE CAYENNE TURBO S E-HYBRID 2019 350000 EQUIPMENT
PORSCHE CAYENNE TURBO S E-HYBRID 2019 355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
PORSCHE CAYENNE TURBO S E-HYBRID 2019 061550 ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PIPES, HOSES, AND FITTINGS

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What Should You Do?

If your vehicle is affected by this TSB, contact your authorized PORSCHE dealer. Bring this bulletin ID (No. 166-21-1) when you visit. If under warranty, the repair should be free. If your warranty has expired, ask about goodwill coverage — manufacturers sometimes cover TSB-related repairs beyond the warranty period.

Frequently Asked Questions

A recall is a mandatory safety fix — the manufacturer must repair every affected vehicle for free. A TSB is an advisory document that describes a known issue and the recommended fix, but repairs are not required. However, some TSBs eventually lead to recalls if the issue poses a safety risk. TSBs are generally issued for quality or performance problems, while recalls address safety defects.

If your vehicle is still under the manufacturer's warranty, TSB-related repairs are typically covered at no cost. If your warranty has expired, you can ask the dealer about goodwill or customer assistance programs. Many manufacturers will cover or partially cover repairs for well-known issues, especially if the TSB was issued recently or affects a large number of vehicles.

Check the make, model, and model year listed above against your vehicle. If they match, this bulletin likely applies. However, TSBs may only affect vehicles with specific production dates, VIN ranges, or configurations. Your dealer can confirm by entering your VIN into their service system, which will show all applicable TSBs and recalls.

This data comes from the National Highway Traffic Safety Administration (NHTSA). Manufacturers are required to submit copies of all communications (including TSBs) sent to their dealers to NHTSA. The agency makes this data publicly available as part of its vehicle safety monitoring program.