Porsche Taycan 2020–2024 — technical service bulletin
Bulletin No. 44-25 · NHTSA communication 11033652 · issued May 27, 2026
Technical service bulletin
communication type
Electrical System
component
2020–2024
model years
46
vehicle entries
Official summary
Technical information for Warning Message "Vehicle Electrical System Faulty" in Conjunction With Fault Memory Entry "Cell Module X, Ageing Detected" in the High-Voltage Battery Control Unit - BMC
Vehicles covered
- 2020 Porsche Taycan
- 2021 Porsche Taycan
- 2022 Porsche Taycan
- 2023 Porsche Taycan
- 2024 Porsche Taycan
- 2021 Porsche Taycan 4 Cross Turismo
- 2022 Porsche Taycan 4 Cross Turismo
- 2023 Porsche Taycan 4 Cross Turismo
- 2024 Porsche Taycan 4 Cross Turismo
- 2020 Porsche Taycan 4S
- 2021 Porsche Taycan 4S
- 2022 Porsche Taycan 4S
- 2023 Porsche Taycan 4S
- 2024 Porsche Taycan 4S
- 2021 Porsche Taycan 4S Cross Turismo
- 2022 Porsche Taycan 4S Cross Turismo
- 2023 Porsche Taycan 4S Cross Turismo
- 2024 Porsche Taycan 4S Cross Turismo
- 2020 Porsche Taycan Cross Turismo
- 2021 Porsche Taycan Cross Turismo
- 2022 Porsche Taycan Cross Turismo
- 2023 Porsche Taycan Cross Turismo
- 2022 Porsche Taycan GTS
- 2023 Porsche Taycan GTS
- 2024 Porsche Taycan GTS
- 2022 Porsche Taycan GTS Sport Turismo
- 2023 Porsche Taycan GTS Sport Turismo
- 2024 Porsche Taycan GTS Sport Turismo
- 2020 Porsche Taycan Turbo
- 2021 Porsche Taycan Turbo
- 2022 Porsche Taycan Turbo
- 2023 Porsche Taycan Turbo
- 2024 Porsche Taycan Turbo
- 2021 Porsche Taycan Turbo Cross Turism
- 2022 Porsche Taycan Turbo Cross Turism
- 2023 Porsche Taycan Turbo Cross Turism
- 2024 Porsche Taycan Turbo Cross Turism
- 2020 Porsche Taycan Turbo S
- 2021 Porsche Taycan Turbo S
- 2022 Porsche Taycan Turbo S
- 2023 Porsche Taycan Turbo S
- 2024 Porsche Taycan Turbo S
- 2021 Porsche Taycan Turbo S Cross Turi
- 2022 Porsche Taycan Turbo S Cross Turi
- 2023 Porsche Taycan Turbo S Cross Turi
- 2024 Porsche Taycan Turbo S Cross Turi
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.