# Warranty extension 18/26 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: Warranty extension - NHTSA id: 11035922 - Published by NHTSA: 2026\-08\-06 - Manufacturer's number: 18/26 - Manufacturer's date: 2026\-07\-23 - Campaign id or software version: 18/26 - NHTSA component: POWER TRAIN - Manufacturer's system: Transmission Control Unit ## NHTSA's summary Warranty Information: Warranty Extension for Transmission Electronics Control Unit \(18/26\) ## The document - [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11035922-0001.pdf) - [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11035922-9999.pdf) The document is the manufacturer's. This site does not hold it. ## Components Transmission and driveline ## Vehicles listed - 2016 PORSCHE 718 BOXSTER - 2017 to 2022 PORSCHE 718 BOXSTER - 2021 to 2022 PORSCHE 718 BOXSTER GTS - 2017 to 2022 PORSCHE 718 BOXSTER S - 2016 PORSCHE 718 CAYMAN - 2017 to 2022 PORSCHE 718 CAYMAN - 2022 PORSCHE 718 CAYMAN GTS - 2017 to 2022 PORSCHE 718 CAYMAN S - 2012 to 2022 PORSCHE 911 - 2012 to 2017 PORSCHE 911 CARRERA - 2020 to 2022 PORSCHE 911 CARRERA - 2012 to 2013 PORSCHE 911 CARRERA 4 - 2012 PORSCHE 911 CARRERA 4 GTS - 2022 PORSCHE 911 CARRERA 4 GTS - 2012 PORSCHE 911 CARRERA 4S - 2012 PORSCHE 911 CARRERA GTS - 2022 PORSCHE 911 CARRERA GTS - 2012 to 2021 PORSCHE 911 CARRERA S - 2012 to 2013 PORSCHE 911 GT2 - 2019 PORSCHE 911 GT2 - 2018 to 2019 PORSCHE 911 GT2 RS - 2012 to 2016 PORSCHE 911 GT3 - 2018 to 2019 PORSCHE 911 GT3 - 2021 to 2022 PORSCHE 911 GT3 - 2019 PORSCHE 911 GT3 RS - 2022 PORSCHE 911 GT3 TOURING - 2012 to 2021 PORSCHE 911 TARGA 4 - 2012 PORSCHE 911 TARGA 4S - 2014 PORSCHE 911 TARGA 4S - 2012 to 2022 PORSCHE 911 TURBO - 2012 PORSCHE 911 TURBO S - 2021 to 2022 PORSCHE 911 TURBO S - 2015 PORSCHE 918 - 2015 PORSCHE 918 SPYDER - 2012 to 2015 PORSCHE BOXSTER - 2012 to 2014 PORSCHE BOXSTER S - 2012 PORSCHE BOXSTER SPYDER - 2012 to 2015 PORSCHE CAYMAN - 2020 PORSCHE CAYMAN - 2020 to 2021 PORSCHE CAYMAN GTS - 2012 PORSCHE CAYMAN R - 2012 PORSCHE CAYMAN S - 2014 PORSCHE CAYMAN S - 2012 to 2022 PORSCHE PANAMERA - 2012 to 2022 PORSCHE PANAMERA 4 - 2017 to 2022 PORSCHE PANAMERA 4 E\-HYBRID - 2018 to 2022 PORSCHE PANAMERA 4 EXECUTIVE - 2018 PORSCHE PANAMERA 4 HYBRID - 2018 PORSCHE PANAMERA 4 HYBRID EXECUTI - 2018 PORSCHE PANAMERA 4 HYBRID SPORT T - 2018 to 2020 PORSCHE PANAMERA 4 SPORT TURISMO - 2012 to 2022 PORSCHE PANAMERA 4S - 2019 to 2022 PORSCHE PANAMERA 4S E\-HYBRID - 2017 to 2022 PORSCHE PANAMERA 4S EXECUTIVE - 2017 to 2022 PORSCHE PANAMERA 4S SPORT TURISMO - 2022 PORSCHE PANAMERA E\-HYBRID - 2012 to 2016 PORSCHE PANAMERA GTS - 2019 to 2021 PORSCHE PANAMERA GTS - 2019 to 2020 PORSCHE PANAMERA GTS SPORT TURISM - 2012 to 2016 PORSCHE PANAMERA S - 2012 to 2016 PORSCHE PANAMERA S E\-HYBRID - 2012 to 2014 PORSCHE PANAMERA S HYBRID - 2012 to 2020 PORSCHE PANAMERA TURBO - 2017 to 2020 PORSCHE PANAMERA TURBO EXECUTIVE - 2012 to 2016 PORSCHE PANAMERA TURBO S - 2021 PORSCHE PANAMERA TURBO S - 2017 to 2022 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 - 2017 PORSCHE redundant BOXSTER - 2020 to 2022 PORSCHE redundant BOXSTER - 2021 to 2022 PORSCHE redundant CAYMAN - 2022 PORSCHE redundant CAYMAN GTS ## Recalls for the same vehicles and component - [21V679000](/recalls/nhtsa/21V679000.md), 2021-09-01: POWER TRAIN:AXLE ASSEMBLY - [20V381000](/recalls/nhtsa/20V381000.md), 2020-07-01: POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT - [2019291](/recalls/tc/2019291.md), 2019-06-12: Powertrain - [2019290](/recalls/tc/2019290.md), 2019-06-12: Powertrain - [19V446000](/recalls/nhtsa/19V446000.md), 2019-06-12: POWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION \(PRNDL\) - [19V445000](/recalls/nhtsa/19V445000.md), 2019-06-12: POWER TRAIN:AXLE HUBS; POWER TRAIN:AXLE ASSEMBLY:AXLE SHAFT - [2014055](/recalls/tc/2014055.md), 2014-02-25: Powertrain ## Other bulletins for the same vehicles and component - [No. 91\-26](/bulletins/11037847.md), 2026-10-02, Service bulletin: POWER TRAIN; ENGINE. Technical Information for Particles/Metal Chips/Residues in Engine Oil - [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. 37\-26](/bulletins/11037828.md), 2026-10-02, Service bulletin: ENGINE; POWER TRAIN. Manufacturer's Certificate for Overview of approved Porsche C40 GT engine oils - [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. JSON: [/v1/bulletins/11035922](/v1/bulletins/11035922) [Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Warranty%20extension%2018%2F26&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F11035922&vehicle=Warranty%20extension%2018%2F26)