# Service bulletin No. 2309

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: 10237458
- Published by NHTSA: 2023\-06\-06
- Manufacturer's number: No. 2309
- Manufacturer's date: 2023\-05\-25
- NHTSA component: SERVICE BRAKES

## NHTSA's summary

Instructions on advanced technical information for the 718 GTS 4.0 Brake Booster

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10237458-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10237458-9999.pdf)

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

## Components

Brakes

## Vehicles listed

- 2021 to 2023 PORSCHE 718 BOXSTER
- 2021 to 2023 PORSCHE 718 BOXSTER GTS
- 2021 to 2023 PORSCHE 718 BOXSTER S
- 2021 PORSCHE 718 CAYMAN
- 2023 PORSCHE 718 CAYMAN
- 2023 PORSCHE 718 CAYMAN GT4
- 2022 to 2023 PORSCHE 718 CAYMAN GTS
- 2021 to 2023 PORSCHE 718 CAYMAN S
- 2021 PORSCHE 718 SPYDER
- 2022 to 2023 PORSCHE 718 SPYDER
- 2022 PORSCHE redundant CAYMAN

## Other bulletins for the same vehicles and component

- [GR13D798](/bulletins/11035890.md), 2026-08-05, Service bulletin: SERVICE BRAKES. Parts Withdrawal \- Brake Disc
- [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. 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. D749](/bulletins/11026376.md), 2025-12-05, Service bulletin: SERVICE BRAKES. Parts information for parts withdrawal involving the brake disc 9Y0615301AJ
- [D719](/bulletins/11018757.md), 2025-06-02, Service bulletin: SERVICE BRAKES. Parts information for Parts Withdrawal \- 1 Set of Brake Pads for Disk Brake. Vehicles included are all cars that use part number 992698451R
- [No. 16\-25](/bulletins/11018005.md), 2025-05-06, Service bulletin: SERVICE BRAKES. Symptom based workshop manual for a yellow warning message \- parking brake malfunction in the instrument cluster
- [No. D689](/bulletins/11005786.md), 2024-08-06, Service bulletin: SERVICE BRAKES. Parts information for parts withdrawal involving the brake hose 9J1611707F and 9J1611708F
- [No. D684](/bulletins/11002860.md), 2024-07-02, Service bulletin: SERVICE BRAKES. Parts information for parts withdrawal involving the retainer for brake hose/brake line
- [No. D681](/bulletins/11001069.md), 2024-06-05, Service bulletin: SERVICE BRAKES. Parts information for parts withdrawal involving the retainer for brake hose/pressure difference sender. \(9J1611845C, 9J1611846C, PAB906051C\)
- [No. D677](/bulletins/10254030.md), 2024-05-02, Service bulletin: SERVICE BRAKES, HYDRAULIC. Parts information for parts withdrawal involving the brake pads \- 992698151F

JSON: [/v1/bulletins/10237458](/v1/bulletins/10237458)

[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.%202309&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10237458&vehicle=Service%20bulletin%20No.%202309)