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 ID | No. 166-21-1 |
| Manufacturer | PORSCHE |
| Models | 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 |
| Model Years | 2019–2023 |
| Date Issued | January 30, 2024 |
| Date Added to NHTSA | February 7, 2024 |
| Component | ENGINE AND ENGINE COOLING |
| Vehicles Affected | 140 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
| Make | Model | Year | Component |
|---|---|---|---|
| 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 |
Related PORSCHE Recalls
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.