Porsche 911 2019–2021 — technical service bulletin
Bulletin No. 2229.1 · NHTSA communication 10225848 · issued Oct 20, 2022
Technical service bulletin
communication type
Electrical System
component
2019–2021
model years
8
vehicle entries
Official summary
Advanced technical information for the Cayenne and 911 - current draw discharges 12V battery
Vehicles covered
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.