RAM 2500 2025–2026 — technical service bulletin
Bulletin S2508000099 · NHTSA communication 11025639 · issued Nov 11, 2025
Technical service bulletin
communication type
Electrical System
component
2025–2026
model years
8
vehicle entries
Official summary
Trailer Light Check Appears on Vehicles Not Equipped With the Option
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.