# Service bulletin No. D677 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: 10254030 - Published by NHTSA: 2024\-05\-02 - Manufacturer's number: No. D677 - Manufacturer's date: 2024\-04\-14 - NHTSA component: SERVICE BRAKES, HYDRAULIC ## NHTSA's summary Parts information for parts withdrawal involving the brake pads \- 992698151F ## The document - [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-10254030-0001.pdf) - [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-10254030-9999.pdf) The document is the manufacturer's. This site does not hold it. ## Components Brakes ## Vehicles listed - 2020 to 2023 PORSCHE 718 BOXSTER - 2021 to 2024 PORSCHE 718 BOXSTER GTS - 2020 to 2024 PORSCHE 718 BOXSTER S - 2020 to 2023 PORSCHE 718 CAYMAN - 2022 to 2023 PORSCHE 718 CAYMAN GT4 - 2022 to 2024 PORSCHE 718 CAYMAN GTS - 2020 to 2023 PORSCHE 718 CAYMAN S - 2020 PORSCHE 718 SPYDER - 2021 PORSCHE 718 SPYDER - 2022 to 2023 PORSCHE 718 SPYDER - 2020 to 2024 PORSCHE 911 - 2022 PORSCHE 911 4S - 2020 to 2024 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 2024 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 2023 PORSCHE 911 TURBO - 2021 to 2023 PORSCHE 911 TURBO S - 2023 PORSCHE CARRERA - 2023 PORSCHE CARRERA 4 - 2023 PORSCHE CARRERA 4 GTS - 2023 PORSCHE CARRERA 4S - 2023 PORSCHE CARRERA GTS - 2023 PORSCHE CARRERA S - 2020 to 2024 PORSCHE CAYENNE - 2024 PORSCHE CAYENNE COUPE - 2020 to 2024 PORSCHE CAYENNE E\-HYBRID - 2020 to 2022 PORSCHE CAYENNE GT - 2021 to 2024 PORSCHE CAYENNE GTS - 2020 to 2024 PORSCHE CAYENNE S - 2024 PORSCHE CAYENNE S COUPE - 2020 PORSCHE CAYENNE S E\-HYBRID - 2020 PORSCHE CAYENNE TURBO - 2023 PORSCHE CAYENNE TURBO - 2020 PORSCHE CAYENNE TURBO COUPE - 2024 PORSCHE CAYENNE TURBO E\-HYBRID - 2022 to 2024 PORSCHE CAYENNE TURBO GT - 2020 to 2023 PORSCHE CAYENNE TURBO S E\-HYBRID - 2020 PORSCHE CAYENNE TURBO S HYB COUPE - 2020 PORSCHE CAYMAN - 2020 to 2021 PORSCHE CAYMAN GT4 - 2020 to 2021 PORSCHE CAYMAN GTS - 2023 PORSCHE EDITION 50 YEAR - 2020 to 2023 PORSCHE MACAN - 2020 to 2023 PORSCHE MACAN GTS - 2020 to 2023 PORSCHE MACAN S - 2020 to 2023 PORSCHE MACAN TURBO - 2020 to 2024 PORSCHE PANAMERA - 2020 to 2024 PORSCHE PANAMERA 4 - 2020 to 2025 PORSCHE PANAMERA 4 E\-HYBRID - 2020 to 2024 PORSCHE PANAMERA 4 EXECUTIVE - 2020 PORSCHE PANAMERA 4 SPORT TURISMO - 2020 to 2024 PORSCHE PANAMERA 4S - 2020 to 2023 PORSCHE PANAMERA 4S E\-HYBRID - 2020 to 2024 PORSCHE PANAMERA 4S EXECUTIVE - 2020 to 2024 PORSCHE PANAMERA 4S SPORT TURISMO - 2022 to 2024 PORSCHE PANAMERA E\-HYBRID - 2020 to 2021 PORSCHE PANAMERA GTS - 2023 to 2024 PORSCHE PANAMERA GTS - 2020 PORSCHE PANAMERA GTS SPORT TURISM - 2020 PORSCHE PANAMERA TURBO - 2020 PORSCHE PANAMERA TURBO EXECUTIVE - 2021 PORSCHE PANAMERA TURBO S - 2020 to 2023 PORSCHE PANAMERA TURBO S E\-HYBRID - 2021 PORSCHE PANAMERA TURBO S EXECUTIV - 2020 PORSCHE PANAMERA TURBO SPORT TURI - 2020 to 2025 PORSCHE TAYCAN - 2021 to 2024 PORSCHE TAYCAN 4 CROSS TURISMO - 2020 to 2024 PORSCHE TAYCAN 4S - 2021 to 2024 PORSCHE TAYCAN 4S CROSS TURISMO - 2020 to 2023 PORSCHE TAYCAN CROSS TURISMO - 2022 to 2024 PORSCHE TAYCAN GTS - 2022 to 2024 PORSCHE TAYCAN GTS SPORT TURISMO - 2020 to 2024 PORSCHE TAYCAN TURBO - 2026 PORSCHE TAYCAN TURBO - 2021 to 2024 PORSCHE TAYCAN TURBO CROSS TURISM - 2025 PORSCHE TAYCAN TURBO GT - 2020 to 2024 PORSCHE TAYCAN TURBO S - 2021 to 2024 PORSCHE TAYCAN TURBO S CROSS TURI ## Recalls for the same vehicles and component - [21V697000](/recalls/nhtsa/21V697000.md), 2021-09-08: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS; SERVICE BRAKES, HYDRAULIC:CRITICAL FASTENERS - [19V735000](/recalls/nhtsa/19V735000.md), 2019-10-16: SERVICE BRAKES; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL ## Other bulletins for the same vehicles and component - [No. 77\-26\-1](/bulletins/11037839.md), 2026-10-02, Service bulletin: SERVICE BRAKES. Technical Information for “Squealing” Brake Noises on the Front Brake During Braking. Note that this bulletin only applies to vehicles with carbon ceramic brakes \(PCCB\). - [No. 77\-26](/bulletins/11036854.md), 2026-09-04, Service bulletin: SERVICE BRAKES. Technical Information for "Squealing” Brake Noises on the Front Brake During Braking. Also includes model year 2027 Cayenne \(9YA/9YB\). - [GR13D800](/bulletins/11035892.md), 2026-08-05, Service bulletin: SERVICE BRAKES. Parts Withdrawal \- 1 Set of Brake Pads for Disk Brake - [GR13D798](/bulletins/11035890.md), 2026-08-05, Service bulletin: SERVICE BRAKES. Parts Withdrawal \- Brake Disc - [No. 2210.3](/bulletins/11033623.md), 2026-06-05, Service bulletin: SERVICE BRAKES; ELECTRICAL SYSTEM. Instructions on advanced technical information for 9YA – Electric Parking Brake Warning in the Instrument Cluster - [No. 2309.3](/bulletins/11032392.md), 2026-05-07, Service bulletin: ELECTRICAL SYSTEM; SERVICE BRAKES. Instructions on advanced technical information for 718 GTS 4.0 \- Brake Booster \(Power Brake\) Warning in Instrument Cluster - [No. 105\-25\-2](/bulletins/11028505.md), 2026-02-06, Service bulletin: ELECTRICAL SYSTEM; SERVICE BRAKES. Technical information for Active Malfunction Indicator Light in Conjunction with Fault Memory Entries Regarding Brake Booster "U01B400" and "C114113" - [No. D752](/bulletins/11028352.md), 2026-02-05, Service bulletin: SERVICE BRAKES. Parts information for parts withdrawal involving the caliper without brake pads. The part numbers affected are in the attached PDF. The vehicles associated are cars that use the part numbers in the PDF. - [No. 211\-23\-1](/bulletins/11027031.md), 2026-01-06, Service bulletin: ELECTRICAL SYSTEM; SERVICE BRAKES. Symptom based workshop manual for a Brake Symptom \- Yellow Warning Message “PSM Failure” in the Instrument Cluster: Checking Hydraulic Unit and Re\-Program PSM Control Unit - [No. 211\-23](/bulletins/11027029.md), 2026-01-06, Service bulletin: SERVICE BRAKES; ELECTRICAL SYSTEM. Symptom based workshop manual for a Brake Symptom \- Yellow Warning Message “PSM Failure” in the Instrument Cluster: Checking Hydraulic Unit and Re\-Program PSM Control Unit JSON: [/v1/bulletins/10254030](/v1/bulletins/10254030) [Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%20No.%20D677&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10254030&vehicle=Service%20bulletin%20No.%20D677)