Porsche 911 2018–2023 — technical service bulletin

Bulletin No. 31-20 · NHTSA communication 10233963 · issued Mar 30, 2023

Technical service bulletin

communication type

Electrical System

component

2018–2023

model years

vehicle entries

Official summary

Technical information for the diagnosis and handling of 12v lithium ion battery

Vehicles covered

2018 Porsche 911
2019 Porsche 911
2020 Porsche 911
2021 Porsche 911
2022 Porsche 911
2023 Porsche 911
2018 Porsche Cayenne
2019 Porsche Cayenne
2020 Porsche Cayenne
2021 Porsche Cayenne
2022 Porsche Cayenne
2023 Porsche Cayenne
2020 Porsche Taycan
2021 Porsche Taycan
2022 Porsche Taycan
2023 Porsche Taycan

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.