TSB: PORSCHE 911, 911 4S, 911 CARRERA, 911 CARRERA S, 911 CARRERA T, 911 DAKAR, 911 GT3, 911 GT3 RS, 911 TARGA 4, 911 TARGA 4S, 911 TURBO, 911 TURBO S, CAYENNE, CAYENNE E-HYBRID, CAYENNE GT, CAYENNE GTS, CAYENNE S, CAYENNE TURBO, CAYENNE TURBO GT, CAYENNE TURBO S E-HYBRID, TAYCAN, TAYCAN 4 CROSS TURISMO, TAYCAN 4S, TAYCAN 4S CROSS TURISMO, TAYCAN CROSS TURISMO, TAYCAN GTS, TAYCAN GTS SPORT TURISMO, TAYCAN TURBO, TAYCAN TURBO CROSS TURISM, TAYCAN TURBO S, TAYCAN TURBO S CROSS TURI (2021–2023)

Bulletin WPH4 — September 12, 2023

Bulletin Details

Bulletin IDWPH4
ManufacturerPORSCHE
Models911, 911 4S, 911 CARRERA, 911 CARRERA S, 911 CARRERA T, 911 DAKAR, 911 GT3, 911 GT3 RS, 911 TARGA 4, 911 TARGA 4S, 911 TURBO, 911 TURBO S, CAYENNE, CAYENNE E-HYBRID, CAYENNE GT, CAYENNE GTS, CAYENNE S, CAYENNE TURBO, CAYENNE TURBO GT, CAYENNE TURBO S E-HYBRID, TAYCAN, TAYCAN 4 CROSS TURISMO, TAYCAN 4S, TAYCAN 4S CROSS TURISMO, TAYCAN CROSS TURISMO, TAYCAN GTS, TAYCAN GTS SPORT TURISMO, TAYCAN TURBO, TAYCAN TURBO CROSS TURISM, TAYCAN TURBO S, TAYCAN TURBO S CROSS TURI
Model Years2021–2023
Date IssuedSeptember 12, 2023
Date Added to NHTSAOctober 5, 2023
ComponentELECTRICAL SYSTEM
Vehicles Affected68 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

Porsche intranet posting with information on recoding control unit for assistance systems - WPH4

Affected Vehicles

MakeModelYearComponent
PORSCHE 911 2023 110000 ELECTRICAL SYSTEM
PORSCHE 911 CARRERA 2023 110000 ELECTRICAL SYSTEM
PORSCHE 911 CARRERA S 2023 110000 ELECTRICAL SYSTEM
PORSCHE 911 CARRERA T 2023 110000 ELECTRICAL SYSTEM
PORSCHE 911 DAKAR 2023 110000 ELECTRICAL SYSTEM
PORSCHE 911 GT3 2023 110000 ELECTRICAL SYSTEM
PORSCHE 911 GT3 RS 2023 110000 ELECTRICAL SYSTEM
PORSCHE 911 TARGA 4 2023 110000 ELECTRICAL SYSTEM
PORSCHE 911 TARGA 4S 2023 110000 ELECTRICAL SYSTEM
PORSCHE 911 TURBO 2023 110000 ELECTRICAL SYSTEM
PORSCHE 911 TURBO S 2023 110000 ELECTRICAL SYSTEM
PORSCHE CAYENNE 2023 110000 ELECTRICAL SYSTEM
PORSCHE CAYENNE E-HYBRID 2023 110000 ELECTRICAL SYSTEM
PORSCHE CAYENNE GTS 2023 110000 ELECTRICAL SYSTEM
PORSCHE CAYENNE S 2023 110000 ELECTRICAL SYSTEM
PORSCHE CAYENNE TURBO 2023 110000 ELECTRICAL SYSTEM
PORSCHE CAYENNE TURBO GT 2023 110000 ELECTRICAL SYSTEM
PORSCHE CAYENNE TURBO S E-HYBRID 2023 110000 ELECTRICAL SYSTEM
PORSCHE TAYCAN 2023 110000 ELECTRICAL SYSTEM
PORSCHE TAYCAN 4 CROSS TURISMO 2023 110000 ELECTRICAL SYSTEM
PORSCHE TAYCAN 4S 2023 110000 ELECTRICAL SYSTEM
PORSCHE TAYCAN 4S CROSS TURISMO 2023 110000 ELECTRICAL SYSTEM
PORSCHE TAYCAN CROSS TURISMO 2023 110000 ELECTRICAL SYSTEM
PORSCHE TAYCAN GTS 2023 110000 ELECTRICAL SYSTEM
PORSCHE TAYCAN GTS SPORT TURISMO 2023 110000 ELECTRICAL SYSTEM
PORSCHE TAYCAN TURBO 2023 110000 ELECTRICAL SYSTEM
PORSCHE TAYCAN TURBO S 2023 110000 ELECTRICAL SYSTEM
PORSCHE TAYCAN TURBO S CROSS TURI 2023 110000 ELECTRICAL SYSTEM
PORSCHE 911 2022 110000 ELECTRICAL SYSTEM
PORSCHE 911 4S 2022 110000 ELECTRICAL SYSTEM
PORSCHE 911 CARRERA 2022 110000 ELECTRICAL SYSTEM
PORSCHE 911 GT3 2022 110000 ELECTRICAL SYSTEM
PORSCHE 911 TURBO 2022 110000 ELECTRICAL SYSTEM
PORSCHE 911 TURBO S 2022 110000 ELECTRICAL SYSTEM
PORSCHE CAYENNE 2022 110000 ELECTRICAL SYSTEM
PORSCHE CAYENNE E-HYBRID 2022 110000 ELECTRICAL SYSTEM
PORSCHE CAYENNE GT 2022 110000 ELECTRICAL SYSTEM
PORSCHE CAYENNE GTS 2022 110000 ELECTRICAL SYSTEM
PORSCHE CAYENNE S 2022 110000 ELECTRICAL SYSTEM
PORSCHE CAYENNE TURBO GT 2022 110000 ELECTRICAL SYSTEM
PORSCHE CAYENNE TURBO S E-HYBRID 2022 110000 ELECTRICAL SYSTEM
PORSCHE TAYCAN 2022 110000 ELECTRICAL SYSTEM
PORSCHE TAYCAN 4 CROSS TURISMO 2022 110000 ELECTRICAL SYSTEM
PORSCHE TAYCAN 4S 2022 110000 ELECTRICAL SYSTEM
PORSCHE TAYCAN 4S CROSS TURISMO 2022 110000 ELECTRICAL SYSTEM
PORSCHE TAYCAN CROSS TURISMO 2022 110000 ELECTRICAL SYSTEM
PORSCHE TAYCAN GTS 2022 110000 ELECTRICAL SYSTEM
PORSCHE TAYCAN TURBO 2022 110000 ELECTRICAL SYSTEM
PORSCHE TAYCAN TURBO CROSS TURISM 2022 110000 ELECTRICAL SYSTEM
PORSCHE TAYCAN TURBO S 2022 110000 ELECTRICAL SYSTEM
PORSCHE 911 2021 110000 ELECTRICAL SYSTEM
PORSCHE 911 CARRERA 2021 110000 ELECTRICAL SYSTEM
PORSCHE 911 CARRERA S 2021 110000 ELECTRICAL SYSTEM
PORSCHE 911 GT3 2021 110000 ELECTRICAL SYSTEM
PORSCHE 911 TARGA 4 2021 110000 ELECTRICAL SYSTEM
PORSCHE 911 TURBO 2021 110000 ELECTRICAL SYSTEM
PORSCHE CAYENNE 2021 110000 ELECTRICAL SYSTEM
PORSCHE CAYENNE E-HYBRID 2021 110000 ELECTRICAL SYSTEM
PORSCHE CAYENNE GT 2021 110000 ELECTRICAL SYSTEM
PORSCHE CAYENNE GTS 2021 110000 ELECTRICAL SYSTEM
PORSCHE CAYENNE S 2021 110000 ELECTRICAL SYSTEM
PORSCHE CAYENNE TURBO S E-HYBRID 2021 110000 ELECTRICAL SYSTEM
PORSCHE TAYCAN 2021 110000 ELECTRICAL SYSTEM
PORSCHE TAYCAN 4S 2021 110000 ELECTRICAL SYSTEM
PORSCHE TAYCAN 4S CROSS TURISMO 2021 110000 ELECTRICAL SYSTEM
PORSCHE TAYCAN CROSS TURISMO 2021 110000 ELECTRICAL SYSTEM
PORSCHE TAYCAN TURBO 2021 110000 ELECTRICAL SYSTEM
PORSCHE TAYCAN TURBO S 2021 110000 ELECTRICAL SYSTEM

Related PORSCHE Recalls

CampaignModelYearComponentSummary
TAYCAN 2025 BACK OVER PREVENTION: SENSING SYSTEM:... Porsche Cars North America, Inc. (Porsche) is recalling certain 2019-2025 Cay...
TAYCAN 2024 BACK OVER PREVENTION: SENSING SYSTEM:... Porsche Cars North America, Inc. (Porsche) is recalling certain 2019-2025 Cay...
TAYCAN 2023 BACK OVER PREVENTION: SENSING SYSTEM:... Porsche Cars North America, Inc. (Porsche) is recalling certain 2019-2025 Cay...
TAYCAN 2022 BACK OVER PREVENTION: SENSING SYSTEM:... Porsche Cars North America, Inc. (Porsche) is recalling certain 2019-2025 Cay...
TAYCAN 2021 BACK OVER PREVENTION: SENSING SYSTEM:... Porsche Cars North America, Inc. (Porsche) is recalling certain 2019-2025 Cay...

What Should You Do?

If your vehicle is affected by this TSB, contact your authorized PORSCHE dealer. Bring this bulletin ID (WPH4) 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.