# Service bulletin No. 88\-25\-2

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: 11026413
- Published by NHTSA: 2025\-12\-05
- Manufacturer's number: No. 88\-25\-2
- Manufacturer's date: 2025\-11\-25
- NHTSA component: POWER TRAIN

## NHTSA's summary

Symptom based workshop manual for information on Complaints Regarding Shifting Quality on Double\-Clutch Transmissions in Conjunction with Message "Transmission Faulty"

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11026413-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11026413-9999.pdf)

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

## Components

Transmission and driveline

## Vehicles listed

- 2017 PORSCHE 718
- 2017 to 2023 PORSCHE 718 BOXSTER
- 2025 PORSCHE 718 BOXSTER
- 2021 to 2024 PORSCHE 718 BOXSTER GTS
- 2017 to 2024 PORSCHE 718 BOXSTER S
- 2017 to 2021 PORSCHE 718 CAYMAN
- 2023 PORSCHE 718 CAYMAN
- 2026 PORSCHE 718 CAYMAN
- 2023 to 2024 PORSCHE 718 CAYMAN GT4
- 2024 PORSCHE 718 CAYMAN GT4 RS
- 2022 to 2024 PORSCHE 718 CAYMAN GTS
- 2017 to 2023 PORSCHE 718 CAYMAN S
- 2018 to 2019 PORSCHE 718 SPYDER
- 2020 PORSCHE 718 SPYDER
- 2021 PORSCHE 718 SPYDER
- 2022 to 2025 PORSCHE 718 SPYDER
- 2024 PORSCHE 718 SPYDER RS
- 2022 PORSCHE redundant CAYMAN

## Recalls for the same vehicles and component

- [24V343000](/recalls/nhtsa/24V343000.md), 2024-05-15: POWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION \(PRNDL\)

## Other bulletins for the same vehicles and component

- [No. 87\-26](/bulletins/11037850.md), 2026-10-02, Service bulletin: POWER TRAIN; ENGINE. Technical Information for Rattling Noises from Around the Rear Silencer
- [No. 32\-26](/bulletins/11037826.md), 2026-10-02, Service bulletin: POWER TRAIN; ENGINE. Manufacturer's Certificate for Overview of approved Porsche C40 GT engine oils
- [No. 31\-26](/bulletins/11037825.md), 2026-10-02, Service bulletin: POWER TRAIN; ENGINE. Manufacturer's Certificate for Overview of Approved Porsche C40 Engine Oils
- [No. 30\-26](/bulletins/11037822.md), 2026-10-02, Service bulletin: ENGINE; POWER TRAIN. Manufacturer's Certificate for Overview of Approved Porsche C20 Engine Oils
- [No. 29\-26](/bulletins/11037818.md), 2026-10-02, Service bulletin: ENGINE; POWER TRAIN. Manufacturer's Certificate for Overview of Approved Porsche C30 Engine Oils
- [No. 28\-26](/bulletins/11037816.md), 2026-10-02, Service bulletin: POWER TRAIN; ENGINE. Manufacturer's Certificate for Overview of Approved Porsche C40 Engine Oils. Note that this bulletin covers all models back to model year 1984, for which C40 engine oils are allocated.
- [No. 27\-26](/bulletins/11037813.md), 2026-10-02, Service bulletin: POWER TRAIN; ENGINE. Manufacturer's Certificate for Overview of Approved Porsche C20 Engine Oils. Note that the bulletin covers all models back to model year 1984, for which C20 engine oils are allocated.
- [No. 26\-26](/bulletins/11037812.md), 2026-10-02, Service bulletin: ENGINE; POWER TRAIN. Manufacturer's Certificate for Overview of Approved Porsche C30 Engine Oils. Note that the bulletin includes all models back to model year 1984, for which C30 engine oils are allocated.
- [No. 25\-26](/bulletins/11037808.md), 2026-10-02, Service bulletin: POWER TRAIN; ENGINE. Manufacturer's Certificate for Overview of Approved Porsche A40 Engine Oils. Note that this bulletin covers all vehicles from model year 1997 to 2020, for which A40 engine oils are assigned. Model years 1997\-2001 are not available for selection in the system.
- [No. 36\-26](/bulletins/11037801.md), 2026-10-02, Service bulletin: POWER TRAIN; ENGINE. Manufacturer's Certificate for Overview of Approved Porsche C40 Engine Oils

JSON: [/v1/bulletins/11026413](/v1/bulletins/11026413)

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