# Service bulletin No. 31\-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: 11021353 - Published by NHTSA: 2025\-08\-04 - Manufacturer's number: No. 31\-25 - Manufacturer's date: 2025\-07\-07 - NHTSA component: SERVICE BRAKES ## NHTSA's summary Technical information for a complaint Maneuvering Assistant: Implausible Standstill When Reversing ## The document - [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11021353-0001.pdf) - [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11021353-9999.pdf) The document is the manufacturer's. This site does not hold it. ## Components Brakes ## Vehicles listed - 2021 to 2025 PORSCHE 911 - 2022 PORSCHE 911 4S - 2021 to 2025 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 - 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 2025 PORSCHE 911 GT3 - 2023 to 2024 PORSCHE 911 GT3 RS - 2022 to 2023 PORSCHE 911 GT3 TOURING - 2021 PORSCHE 911 TARGA 4 - 2023 PORSCHE 911 TARGA 4 - 2023 PORSCHE 911 TARGA 4S - 2023 PORSCHE 911 TARGA GTS - 2021 to 2023 PORSCHE 911 TURBO - 2021 to 2023 PORSCHE 911 TURBO S - 2021 to 2025 PORSCHE CAYENNE - 2024 to 2025 PORSCHE CAYENNE COUPE - 2021 to 2025 PORSCHE CAYENNE E\-HYBRID - 2024 to 2025 PORSCHE CAYENNE E\-HYBRID COUPE - 2021 to 2022 PORSCHE CAYENNE GT - 2021 to 2024 PORSCHE CAYENNE GTS - 2021 to 2024 PORSCHE CAYENNE S - 2024 PORSCHE CAYENNE S COUPE - 2023 PORSCHE CAYENNE TURBO - 2024 PORSCHE CAYENNE TURBO E\-HYBRID - 2022 to 2024 PORSCHE CAYENNE TURBO GT - 2021 to 2023 PORSCHE CAYENNE TURBO S E\-HYBRID - 2021 to 2024 PORSCHE PANAMERA - 2026 PORSCHE PANAMERA - 2021 to 2024 PORSCHE PANAMERA 4 - 2021 to 2025 PORSCHE PANAMERA 4 E\-HYBRID - 2021 to 2024 PORSCHE PANAMERA 4 EXECUTIVE - 2021 to 2024 PORSCHE PANAMERA 4S - 2021 to 2023 PORSCHE PANAMERA 4S E\-HYBRID - 2021 to 2024 PORSCHE PANAMERA 4S EXECUTIVE - 2021 to 2024 PORSCHE PANAMERA 4S SPORT TURISMO - 2022 to 2024 PORSCHE PANAMERA E\-HYBRID - 2021 PORSCHE PANAMERA GTS - 2023 to 2024 PORSCHE PANAMERA GTS - 2021 PORSCHE PANAMERA TURBO S - 2021 to 2023 PORSCHE PANAMERA TURBO S E\-HYBRID - 2021 PORSCHE PANAMERA TURBO S EXECUTIV - 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 - [2024353](/recalls/tc/2024353.md), 2024-06-19: Brakes - [24V455000](/recalls/nhtsa/24V455000.md), 2024-06-19: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:HOSES, LINES/PIPING, AND FITTINGS - [23V347000](/recalls/nhtsa/23V347000.md), 2023-05-16: ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; SERVICE BRAKES, HYDRAULIC - [21V697000](/recalls/nhtsa/21V697000.md), 2021-09-08: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS; SERVICE BRAKES, HYDRAULIC:CRITICAL FASTENERS ## 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. 90\-21](/bulletins/11030877.md), 2026-04-07, Service bulletin: SERVICE BRAKES. Symptom based workshop manual for a Brake Symptom – Brake Pedal Travel Perceived as “Too Far”: Observe Specified Procedure - [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. 105\-25\-1](/bulletins/11028380.md), 2026-02-05, Service bulletin: 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 JSON: [/v1/bulletins/11021353](/v1/bulletins/11021353) [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.%2031-25&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F11021353&vehicle=Service%20bulletin%20No.%2031-25)