Service bulletin No. 31-20
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
| Type | Service bulletin |
|---|---|
| NHTSA id | 11024155 |
| Published by NHTSA | 2025-10-08 |
| Manufacturer's number | No. 31-20 |
| Manufacturer's date | 2025-09-26 |
| NHTSA component | ELECTRICAL SYSTEM |
NHTSA's summary
Technical information for a Diagnosis and Handling of 12-Volt Lithium-Ion Battery (Vehicle Electrical System Battery)
The document
The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.
Components
Electrical system
| PORSCHE 911 | 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 |
|---|---|
| PORSCHE 911 4S | 2022 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE 911 CARRERA | 2020, 2021, 2022, 2023, 2024, 2025 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE 911 CARRERA 4 | 2023 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE 911 CARRERA 4 GTS | 2022, 2023 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE 911 CARRERA 4S | 2023 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE 911 CARRERA GTS | 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE 911 CARRERA S | 2018, 2019, 2020, 2021 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE 911 CARRERA S | 2023 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE 911 CARRERA T | 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE 911 DAKAR | 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE 911 GT2 | 2019 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE 911 GT2 RS | 2018, 2019 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE 911 GT3 | 2018, 2019 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE 911 GT3 | 2021, 2022, 2023, 2024, 2025 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE 911 GT3 RS | 2019 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE 911 GT3 RS | 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE 911 GT3 TOURING | 2022, 2023 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE 911 TARGA 4 | 2018, 2019, 2020, 2021 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE 911 TARGA 4 | 2023 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE 911 TARGA 4S | 2023 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE 911 TARGA GTS | 2023 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE 911 TURBO | 2018, 2019, 2020, 2021, 2022, 2023 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE 911 TURBO S | 2021, 2022, 2023 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE CAYENNE | 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 |
| PORSCHE CAYENNE COUPE | 2024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE CAYENNE E-HYBRID | 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE CAYENNE E-HYBRID COUPE | 2024, 2025 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE CAYENNE GT | 2020, 2021, 2022 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE CAYENNE GTS | 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE CAYENNE S | 2018, 2019, 2020, 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE CAYENNE S COUPE | 2024 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE CAYENNE S E-HYBRID | 2018 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE CAYENNE S E-HYBRID | 2020 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE CAYENNE TURBO | 2018, 2019, 2020 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE CAYENNE TURBO | 2023 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE CAYENNE TURBO COUPE | 2020 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE CAYENNE TURBO E-HYBRID | 2024 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE CAYENNE TURBO GT | 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE CAYENNE TURBO S E-HYBRID | 2019, 2020, 2021, 2022, 2023 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE CAYENNE TURBO S HYB COUPE | 2020 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE TAYCAN | 2020, 2021, 2022, 2023, 2024, 2025, 2026 |
| PORSCHE TAYCAN 4 CROSS TURISMO | 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE TAYCAN 4S | 2020, 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE TAYCAN 4S CROSS TURISMO | 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE TAYCAN CROSS TURISMO | 2020, 2021, 2022, 2023 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE TAYCAN GTS | 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE TAYCAN GTS SPORT TURISMO | 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE TAYCAN TURBO | 2020, 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE TAYCAN TURBO | 2026 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE TAYCAN TURBO CROSS TURISM | 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE TAYCAN TURBO GT | 2025 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE TAYCAN TURBO S | 2020, 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE TAYCAN TURBO S CROSS TURI | 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE redundant CAYENNE E-HYBRID | 2020 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| 24V732000 | 2024-10-01. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY; ELECTRICAL SYSTEM:SOFTWARE |
|---|---|
| 24V731000 | 2024-10-01. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY; ELECTRICAL SYSTEM:SOFTWARE |
| 24V217000 | 2024-03-20. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY |
| 24V215000 | 2024-03-20. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY |
| 23V841000 | 2023-12-13. ELECTRICAL SYSTEM:PROPULSION SYSTEM:CHARGING:CABLE/CORD:ONBOARD |
| 23V840000 | 2023-12-13. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY |
| 23V615000 | 2023-09-01. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY |
| 23V347000 | 2023-05-16. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; SERVICE BRAKES, HYDRAULIC |
| 23V176000 | 2023-03-17. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; SEAT BELTS:FRONT:WARNING LIGHT/DEVICES |
| 21V486000 | 2021-06-29. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE; ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION MOTOR:CONTROLLER:SOFTWARE |
A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.
| GR13D804 | 2026-10-02. Service bulletin. Parts Information for Parts Withdrawal - High-Voltage Heating (PTC) |
|---|---|
| WTL2 | 2026-10-02. Service campaign. Porsche intranet posting for Campaign WTL2 – Replacing Electric Passenger Compartment Heater |
| No. WTL2 | 2026-10-02. Service campaign. Technical Information for Campaign WTL2 – Replacing Electric Passenger Compartment Heater |
| WTK4 | 2026-10-02. Service campaign. Porsche intranet posting with Campaign WTK4 information |
| No. WTK4 | 2026-10-02. Service campaign. Technical Information for Campaign WTK4 – Reset Vehicle Electrical System Battery |
| No. 103-25-2 | 2026-10-02. Service bulletin. Technical Information for Need to Replace Components of the High-Voltage Battery - High-Voltage Battery Control Unit / Cell module; No Mixed Installation Permitted: Observe Specified Approach |
| No. 86-26 | 2026-10-02. Service bulletin. Technical Information for Vehicle Color in Front Display/Control Panel Wrong after Replacing Central Computer (PCM) |
| No. 84-26 | 2026-10-02. Service bulletin. Technical Information for Filler Flap on Vehicles with Hybrid Drive System (PHEV) Does Not Close |
| No. 81-26 | 2026-10-02. Service bulletin. Technical Information for Yellow Warning Message “All-Wheel Drive System Malfunction”, “C12BEF6” and “C133700” in the All-Wheel Electronics Control Unit |
| No. 12-26 | 2026-10-02. Service bulletin. Technical Information for Damage to Nano Plug Contacts Due to Utilization of Incorrect Measuring Equipment |