Service bulletin No. 2503.2
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 | 11021643 |
| Published by NHTSA | 2025-08-06 |
| Manufacturer's number | No. 2503.2 |
| Manufacturer's date | 2025-07-22 |
| NHTSA component | LANE DEPARTURE: WARNING; LANE DEPARTURE: ASSIST; FORWARD COLLISION AVOIDANCE: WARNINGS; FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING; FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL |
NHTSA's summary
Instructions on advanced technical information for troubleshooting ADAs systems
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
Driver assistance, Adaptive cruise control, Lane departure and lane keeping
| PORSCHE 911 | 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 | 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 GT3 | 2021, 2022, 2023, 2024, 2025 (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 | 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 | 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 | 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 | 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 GTS | 2024 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE CAYENNE S | 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 TURBO E-HYBRID | 2024 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE CAYENNE TURBO GT | 2024 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE MACAN 4 ELECTRIC | 2024, 2025 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE MACAN 4S ELECTRIC | 2025 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE MACAN ELECTRIC | 2024, 2025 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE MACAN TURBO ELECTRIC | 2024, 2025 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE PANAMERA | 2024 |
| PORSCHE PANAMERA | 2026 |
| PORSCHE PANAMERA 4 | 2024 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE PANAMERA 4 E-HYBRID | 2024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE PANAMERA 4 EXECUTIVE | 2024 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE PANAMERA 4S | 2024 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE PANAMERA 4S EXECUTIVE | 2024 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE PANAMERA 4S SPORT TURISMO | 2024 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE PANAMERA E-HYBRID | 2024 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE PANAMERA GTS | 2024 (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) |
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| No. 2606-1 | 2026-09-04. Service bulletin. Information on Advanced Technical Information for E3II V8 Cayenne – Various Assistance System Warning Messages in the Instrument Cluster due to Implausible Drivetrain Coordinator Status |
|---|---|
| No. 2606 | 2026-09-04. Service bulletin. Information on Advanced Technical Information for E3II V8 Cayenne – Various Assistance System Warning Messages in the Instrument Cluster due to Implausible Drivetrain Coordinator Status |
| No. 11-25-4 | 2026-09-04. Service bulletin. Technical Information for White Messages Regarding Driver Assistance Systems in Conjunction with Passive Fault Memory Entries in the ZFAS Control Unit |
| No. 75-25 | 2026-09-04. Service bulletin. Technical Information for Various White Messages Regarding Driver Assistance Systems/Fault Memory Entry "C12D5FA" in the ZFAS Control Unit |
| 2121.4 | 2026-08-05. Service bulletin. ACC Dynamic Calibration Fault C110300 |
| No. 24-26 | 2026-04-07. Service bulletin. Symptom based workshop manual for a Message “Active Lane Keeping Currently Not Available”, Fault in Front Driver’s Side Door Control Unit “U14B700” in Distance Measuring Sensor (ACC) Control Unit |
| No. 11-25 | 2026-01-06. Service bulletin. Technical information for Various Error Messages Regarding Driver Assistance Systems in the Instrument Cluster in Conjunction With Passive Fault Memory Entries in the Driver Assistance Systems Control Unit - ZFAS |
| No. 75-25-2 | 2025-12-05. Service bulletin. Technical information for Various White Messages Regarding Driver Assistance Systems In the Instrument Cluster/Fault Memory Entry "C12D5FA" In the Control Unit for Driver Assistance Systems |
| No. 75-25-1 | 2025-12-05. Service bulletin. Technical information for Various White Messages Regarding Driver Assistance Systems In the Instrument Cluster/Fault Memory Entry "C12D5FA" In the Control Unit for Driver Assistance Systems |
| No. 75-25 | 2025-12-05. Service bulletin. Technical information for Various White Messages Regarding Driver Assistance Systems In the Instrument Cluster/Fault Memory Entry "C12D5FA" In the Control Unit for Driver Assistance Systems |