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Service bulletin No. 75-25

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id11026409
Published by NHTSA2025-12-05
Manufacturer's numberNo. 75-25
Manufacturer's date2025-11-26
NHTSA componentLANE DEPARTURE: WARNING; LANE DEPARTURE: ASSIST; FORWARD COLLISION AVOIDANCE: WARNINGS; FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING; FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL

NHTSA's summary

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

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

Trouble codes named

C12D5

Vehicles listed
PORSCHE TAYCAN2020, 2021, 2022, 2023, 2024, 2025, 2026
PORSCHE TAYCAN 4 CROSS TURISMO2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE TAYCAN 4S2020, 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE TAYCAN 4S CROSS TURISMO2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE TAYCAN CROSS TURISMO2020, 2021, 2022, 2023 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE TAYCAN GTS2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE TAYCAN GTS SPORT TURISMO2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE TAYCAN TURBO2020, 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE TAYCAN TURBO2026 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE TAYCAN TURBO CROSS TURISM2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE TAYCAN TURBO GT2025 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE TAYCAN TURBO S2020, 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE TAYCAN TURBO S CROSS TURI2021, 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.

Other bulletins for the same vehicles and component
No. 11-25-42026-09-04. Service bulletin. Technical Information for White Messages Regarding Driver Assistance Systems in Conjunction with Passive Fault Memory Entries in the ZFAS Control Unit
No. 24-262026-04-07. 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. 11-252026-01-06. 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. 2503.32025-12-05. Service bulletin. Instructions on advanced technical information for Troubleshooting Advanced Driver Assistance Systems (ADAS)
No. 2503.22025-08-06. Service bulletin. Instructions on advanced technical information for troubleshooting ADAs systems
No. 2503.12025-07-09. Service bulletin. Instructions on advanced technical information for the advanced driver assistance systems. Please refer to PDF attached for more information regarding this.
No. 11-252025-04-07. Service bulletin. Technical Information - Various Error Messages regarding Driver Assistance Systems in the Instrument Cluster / Passive Fault Memory Entry "C12D5FA" in the Driver Assistance System Control Unit (ZFAS) (11/25)
No. 205-21-22022-03-03. Service bulletin. Technical information for a message stating "lane change assist not available - service necessary" in the instrument cluster. Re-programing control units for lane change and front corner radar.