Porsche 718 1966–2023 — technical service bulletin

Bulletin No. D4a · NHTSA communication 10233920 · issued Mar 16, 2023

Technical service bulletin

communication type

Equipment

component

1966–2023

model years

vehicle entries

Official summary

Product knowledge for the Porsche evolution from 1948-2023.

Vehicles covered

2017 Porsche 718
2017 Porsche 718 Boxster
2018 Porsche 718 Boxster
2019 Porsche 718 Boxster
2020 Porsche 718 Boxster
2021 Porsche 718 Boxster
2022 Porsche 718 Boxster
2023 Porsche 718 Boxster
2021 Porsche 718 Boxster GTS
2022 Porsche 718 Boxster GTS
2023 Porsche 718 Boxster GTS
2017 Porsche 718 Boxster S
2018 Porsche 718 Boxster S
2019 Porsche 718 Boxster S
2020 Porsche 718 Boxster S
2021 Porsche 718 Boxster S
2022 Porsche 718 Boxster S
2023 Porsche 718 Boxster S
2017 Porsche 718 Cayman
2018 Porsche 718 Cayman
2019 Porsche 718 Cayman
2020 Porsche 718 Cayman
2021 Porsche 718 Cayman
2022 Porsche 718 Cayman
2023 Porsche 718 Cayman
2023 Porsche 718 Cayman GT4
2022 Porsche 718 Cayman GTS
2023 Porsche 718 Cayman GTS
2017 Porsche 718 Cayman S
2018 Porsche 718 Cayman S
2019 Porsche 718 Cayman S
2020 Porsche 718 Cayman S
2021 Porsche 718 Cayman S
2022 Porsche 718 Cayman S
2023 Porsche 718 Cayman S
2018 Porsche 718 Spyder
2019 Porsche 718 Spyder
2020 Porsche 718 Spyder
2021 Porsche 718 Spyder
2022 Porsche 718 Spyder
2023 Porsche 718 Spyder
1966 Porsche 911
1967 Porsche 911
1969 Porsche 911
1970 Porsche 911
1972 Porsche 911
1973 Porsche 911
1974 Porsche 911
1975 Porsche 911
1976 Porsche 911
1977 Porsche 911
1978 Porsche 911
1979 Porsche 911
1983 Porsche 911
1984 Porsche 911
1987 Porsche 911
1988 Porsche 911
1989 Porsche 911
1990 Porsche 911
1991 Porsche 911

What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.