Porsche 911 2021–2023 — technical service bulletin

Bulletin No. 89-23 · NHTSA communication 10243606 · issued Sep 8, 2023

Technical service bulletin

communication type

Electronic Stability Control

component

2021–2023

model years

vehicle entries

Official summary

Technical information for WPH4 - recoding control unit for assistance systems

Vehicles covered

2021 Porsche 911
2022 Porsche 911
2023 Porsche 911
2022 Porsche 911 4S
2021 Porsche 911 Carrera
2022 Porsche 911 Carrera
2023 Porsche 911 Carrera
2021 Porsche 911 Carrera S
2023 Porsche 911 Carrera S
2023 Porsche 911 Carrera T
2021 Porsche 911 Turbo
2022 Porsche 911 Turbo
2023 Porsche 911 Turbo
2022 Porsche 911 Turbo S
2023 Porsche 911 Turbo S
2021 Porsche Cayenne
2022 Porsche Cayenne
2023 Porsche Cayenne
2021 Porsche Cayenne E-Hybrid
2022 Porsche Cayenne E-Hybrid
2023 Porsche Cayenne E-Hybrid
2021 Porsche Cayenne GT
2022 Porsche Cayenne GT
2021 Porsche Cayenne GTS
2022 Porsche Cayenne GTS
2023 Porsche Cayenne GTS
2021 Porsche Cayenne S
2022 Porsche Cayenne S
2023 Porsche Cayenne S
2023 Porsche Cayenne Turbo
2022 Porsche Cayenne Turbo GT
2023 Porsche Cayenne Turbo GT
2021 Porsche Cayenne Turbo S E-Hybrid
2022 Porsche Cayenne Turbo S E-Hybrid
2023 Porsche Cayenne Turbo S E-Hybrid
2021 Porsche Taycan
2022 Porsche Taycan
2023 Porsche Taycan
2022 Porsche Taycan 4 Cross Turismo
2023 Porsche Taycan 4 Cross Turismo
2021 Porsche Taycan 4S
2022 Porsche Taycan 4S
2023 Porsche Taycan 4S
2021 Porsche Taycan 4S Cross Turismo
2022 Porsche Taycan 4S Cross Turismo
2023 Porsche Taycan 4S 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
2023 Porsche Taycan GTS Sport Turismo
2021 Porsche Taycan Turbo
2022 Porsche Taycan Turbo
2023 Porsche Taycan Turbo
2022 Porsche Taycan Turbo Cross Turism
2021 Porsche Taycan Turbo S
2022 Porsche Taycan Turbo S
2023 Porsche Taycan Turbo S
2023 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.