# 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.

- Type: Service bulletin
- NHTSA id: 11037045
- Published by NHTSA: 2026\-09\-04
- Manufacturer's number: No. 75\-25
- Manufacturer's date: 2026\-08\-14
- NHTSA component: LANE DEPARTURE: ASSIST; BACK OVER PREVENTION: REARVIEW SYSTEM BRAKING; 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/Fault Memory Entry "C12D5FA" in the ZFAS Control Unit

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11037045-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11037045-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Driver assistance, Adaptive cruise control, Backup camera, Lane departure and lane keeping

## Trouble codes named

C12D5

## Vehicles listed

- 2020 to 2026 PORSCHE 911
- 2022 PORSCHE 911 4S
- 2020 to 2026 PORSCHE 911 CARRERA
- 2023 PORSCHE 911 CARRERA 4
- 2022 to 2023 PORSCHE 911 CARRERA 4 GTS
- 2023 PORSCHE 911 CARRERA 4S
- 2022 to 2024 PORSCHE 911 CARRERA GTS
- 2020 to 2021 PORSCHE 911 CARRERA S
- 2023 PORSCHE 911 CARRERA S
- 2023 to 2024 PORSCHE 911 CARRERA T
- 2023 to 2024 PORSCHE 911 DAKAR
- 2021 to 2026 PORSCHE 911 GT3
- 2023 to 2024 PORSCHE 911 GT3 RS
- 2022 to 2023 PORSCHE 911 GT3 TOURING
- 2020 to 2021 PORSCHE 911 TARGA 4
- 2023 PORSCHE 911 TARGA 4
- 2023 PORSCHE 911 TARGA 4S
- 2023 PORSCHE 911 TARGA GTS
- 2020 to 2024 PORSCHE 911 TURBO
- 2021 to 2024 PORSCHE 911 TURBO S

## Recalls for the same vehicles and component

- [25V896000](/recalls/nhtsa/25V896000.md), 2025-12-19: BACK OVER PREVENTION: SENSING SYSTEM: CAMERA

## Other bulletins for the same vehicles and component

- [No. 11\-25\-4](/bulletins/11037046.md), 2026-09-04, Service bulletin: FORWARD COLLISION AVOIDANCE: WARNINGS; LANE DEPARTURE: ASSIST; FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL; BACK OVER PREVENTION: REARVIEW SYSTEM BRAKING; FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING. Technical Information for White Messages Regarding Driver Assistance Systems in Conjunction with Passive Fault Memory Entries in the ZFAS Control Unit
- [ASB2](/bulletins/11035744.md), 2026-08-05, Service campaign: ELECTRICAL SYSTEM; BACK OVER PREVENTION: WARNINGS. Re\-Programming Assistance System Control Unit \(Stop Delivery/Recall Campaign\)
- [03/26 9102](/bulletins/11034790.md), 2026-07-07, Service bulletin: BACK OVER PREVENTION: WARNINGS; ELECTRICAL SYSTEM. Complaint Regarding the Camera View \(Real Top View\) in the PCM Central Display \(03/26\)
- [03/26 9102](/bulletins/11034789.md), 2026-07-07, Service bulletin: BACK OVER PREVENTION: WARNINGS; ELECTRICAL SYSTEM. Complaint Regarding the Camera View \(Real Top View\) in the PCM Central Display \(03/26\)
- [No. 11\-25](/bulletins/11027134.md), 2026-01-06, Service bulletin: FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL; LANE DEPARTURE: ASSIST; LANE DEPARTURE: WARNING; FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING; FORWARD COLLISION AVOIDANCE: WARNINGS. 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. 2503.3](/bulletins/11026391.md), 2025-12-05, Service bulletin: FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL; LANE DEPARTURE: ASSIST. Instructions on advanced technical information for Troubleshooting Advanced Driver Assistance Systems \(ADAS\)
- [No. 2503.2](/bulletins/11021643.md), 2025-08-06, Service bulletin: LANE DEPARTURE: WARNING; LANE DEPARTURE: ASSIST; FORWARD COLLISION AVOIDANCE: WARNINGS; FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING; FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL. Instructions on advanced technical information for troubleshooting ADAs systems
- [No. 2503.1](/bulletins/11020513.md), 2025-07-09, Service bulletin: FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL; LANE DEPARTURE: WARNING; LANE DEPARTURE: ASSIST; FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING. Instructions on advanced technical information for the advanced driver assistance systems. Please refer to PDF attached for more information regarding this.
- [No. 11\-25](/bulletins/11016723.md), 2025-04-07, Service bulletin: LANE DEPARTURE: WARNING; ELECTRICAL SYSTEM; LANE DEPARTURE: ASSIST. 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 \(ZFAS\) \(11/25\)
- [PIWIS2301ar](/bulletins/10240397.md), 2023-08-03, Service bulletin: BACK OVER PREVENTION:SOFTWARE. Information for PIWIS tester updates 42.000.050 \& .051

JSON: [/v1/bulletins/11037045](/v1/bulletins/11037045)

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