# Service bulletin No. 2304\-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: 11037057
- Published by NHTSA: 2026\-09\-04
- Manufacturer's number: No. 2304\-2
- Manufacturer's date: 2026\-08\-24
- NHTSA component: ENGINE; POWER TRAIN

## NHTSA's summary

Information on Advanced Technical Information for E3.I/G2 V8 – Oil/Air Separator Membrane Failure

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11037057-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11037057-9999.pdf)

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

## Components

Engine, Transmission and driveline

## Vehicles listed

- 2020 to 2022 PORSCHE CAYENNE GT
- 2021 to 2026 PORSCHE CAYENNE GTS
- 2024 to 2026 PORSCHE CAYENNE GTS COUPE
- 2024 PORSCHE CAYENNE S
- 2024 to 2026 PORSCHE CAYENNE S COUPE
- 2019 to 2020 PORSCHE CAYENNE TURBO
- 2023 PORSCHE CAYENNE TURBO
- 2020 PORSCHE CAYENNE TURBO COUPE
- 2024 to 2026 PORSCHE CAYENNE TURBO E\-HYBRID
- 2024 to 2026 PORSCHE CAYENNE TURBO E\-HYBRID COUPE
- 2022 to 2024 PORSCHE CAYENNE TURBO GT
- 2025 PORSCHE CAYENNE TURBO GT COUPE
- 2019 to 2023 PORSCHE CAYENNE TURBO S E\-HYBRID
- 2020 PORSCHE CAYENNE TURBO S HYB COUPE
- 2019 to 2021 PORSCHE PANAMERA GTS
- 2023 to 2026 PORSCHE PANAMERA GTS
- 2019 to 2020 PORSCHE PANAMERA GTS SPORT TURISM
- 2017 to 2020 PORSCHE PANAMERA TURBO
- 2025 to 2026 PORSCHE PANAMERA TURBO E\-HYBRID
- 2017 to 2020 PORSCHE PANAMERA TURBO EXECUTIVE
- 2021 PORSCHE PANAMERA TURBO S
- 2017 to 2023 PORSCHE PANAMERA TURBO S E\-HYBRID
- 2025 to 2026 PORSCHE PANAMERA TURBO S E\-HYBRID
- 2021 PORSCHE PANAMERA TURBO S EXECUTIV
- 2018 PORSCHE PANAMERA TURBO S HYBRID
- 2018 PORSCHE PANAMERA TURBO S HYBRID E
- 2018 PORSCHE PANAMERA TURBO S HYBRID S
- 2018 to 2020 PORSCHE PANAMERA TURBO SPORT TURI

## Recalls for the same vehicles and component

- [21V341000](/recalls/nhtsa/21V341000.md), 2021-05-12: ENGINE
- [2020211](/recalls/tc/2020211.md), 2020-05-14: Powertrain
- [20V271000](/recalls/nhtsa/20V271000.md), 2020-05-13: POWER TRAIN:AUTOMATIC TRANSMISSION:COOLING UNIT AND LINES

## Other bulletins for the same vehicles and component

- [WSM5](/bulletins/11037867.md), 2026-10-02, Service campaign: ENGINE; STRUCTURE:BODY. Porsche intranet posting for Campaign WSM5 – Replacing engine data sticker \(VECI\)
- [No. WSM5](/bulletins/11037865.md), 2026-10-02, Service campaign: ENGINE; STRUCTURE:BODY. Technical Information for Campaign WSM5 – Replacing engine data sticker \(VECI\)
- [No. 103\-25\-2](/bulletins/11037838.md), 2026-10-02, Service bulletin: ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM; POWER TRAIN. Technical Information for Need to Replace Components of the High\-Voltage Battery \- High\-Voltage Battery Control Unit / Cell module; No Mixed Installation Permitted: Observe Specified Approach
- [No. 103\-25\-2](/bulletins/11037837.md), 2026-10-02, Service bulletin: POWER TRAIN; ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. Technical Information for Need to Replace Components of the High\-Voltage Battery \- High\-Voltage Battery Control Unit / Cell module; No Mixed Installation Permitted: Observe Specified Approach
- [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.

JSON: [/v1/bulletins/11037057](/v1/bulletins/11037057)

[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.%202304-2&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F11037057&vehicle=Service%20bulletin%20No.%202304-2)