RAM 2500 2026 — technical service bulletin
Bulletin 08-089-26 · NHTSA communication 11029753 · issued Feb 28, 2026
Technical service bulletin
communication type
Electrical System
component
2026
model years
4
vehicle entries
Official summary
Flash: Heating, Ventilation And Cooling (HVAC) Software Updates Customers may experience the following: SYMPTOM: ● Heated seat and/or heated steering wheel are inoperative. This bulletin involves reprogramming the HVAC with the 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.