2025 Thor Motor Coach Tranquility problems, complaints & recalls
Safety recalls (1)
Electrical System:wiring:fuses And Circuit Breakers 2024-06-11 · campaign 24V427000 · 11 vehicles
Defect: Thor Motor Coach (TMC) is recalling certain 2025 Thor Tranquility and Sanctuary motorhomes. A 50 AMP circuit breaker was incorrectly installed when a 20 AMP breaker is required, which can result in overheated wiring.
Risk: Wiring that overheats increases the risk of a fire.
Fix: Dealers will install a 20 AMP circuit breaker, free of charge. Owner notification letters were mailed July 29, 2024. Owners may contact TMC customer service at 1-877-500-1020. TMC's number for this recall is RC000305.
Service bulletins (3)
Technical service bulletins are repair instructions manufacturers send dealers for known issues. Unlike recalls, the fix is not automatically free — but naming the bulletin at the service desk can save diagnosis time and support goodwill repairs.
Unknown Or Other 2026-06-01 · 26-01 · Service Bulletin/Repair Instructions
thor motor coach (tmc) has been made aware of an emergency warning label adhered in error to the interior slider door window on the ford and mercedes chassis. the label instructions only pertain to the ram promaster chassis product and are ineffective on the ford and mercedes brands.
Unknown Or Other 2026-05-12 · TSB 26-01 · Service Bulletin/Repair Instructions
thor motor coach (tmc) has been made aware of an emergency warning label adhered in error to the interior slider door window on the ford and mercedes chassis. the label instructions only pertain to the ram promaster chassis product and are ineffective on the ford and mercedes brands. tmc is requesti
Unknown Or Other 2024-10-04 · TSB 24-07 · Service Bulletin/Repair Instructions
the interior lower panel of the sliding door may become loose and pull or warp away from the chassis sliding door. adding snap buttons will resecure the interior panel flush to the door.
What owners report
No detailed complaint narratives on file.
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.