Rivian R1S 2025–2026 — technical service bulletin
Bulletin SOC Imbalance SMS_112625 · NHTSA communication 11026123 · issued Nov 26, 2025
Technical service bulletin
communication type
Fuel/propulsion System
component
2025–2026
model years
4
vehicle entries
Official summary
Text message to encourage owners to update to latest software.
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.