Tesla Model S 2021–2022 — technical service bulletin
Bulletin SB-25-16-002 · NHTSA communication 11023640 · issued Sep 2, 2025
Technical service bulletin
communication type
Electrical System
component
2021–2022
model years
4
vehicle entries
Official summary
On certain Model S and Model X vehicles built between approximately January 2021 and September 22, 2022, the High Voltage (HV) battery ports’ plungers intended for internal water leak egress (also known as flood ports) can be replaced with plungers that are more robust against external ingress due to submersion during flooding or other similar high-severity abuse instances. Replace all 5 flood port plungers with updated parts. This new revision, R2, updates the affected Countries/Regions.
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.