2023 Thor Motor Coach Tranquility problems, complaints & recalls
Most-reported problem areas: Electrical System:alternator/Generator/Regulator (1) · Electrical System (1)
Safety recalls (2)
Structure:critical Fasteners 2025-11-17 · campaign 25V791000 · 4,763 vehicles
Defect: Thor Motor Coach (TMC) is recalling certain 2023-2024 Twist, Dazzle, 2023 Tranquility, Sanctuary, 2022-2024 Tellaro, Sequence, and 2024 Freedom Elite Van recreational vehicles. The solar panel mounting brackets may become loose or break allowing the solar panel to detach.
Risk: A detached solar can become a road hazard for other vehicles, increasing the risk of a crash.
Fix: Dealers will inspect and install missing washers, as necessary, free of charge. Owner notification letters were mailed January 12, 2026. Another notice will be sent once the remedy becomes available. Owners may contact TMC customer service at 1-877-855-2867. TMC's number for this recall is RC000336.
Equipment:mechanical:carrier/Rack 2023-06-27 · campaign 23V447000 · 213 vehicles
Defect: Thor Motor Coach (TMC) is recalling certain 2022-2024 Tranquility and 2022-2023 Sanctuary motorhomes. The R-bike rack arms may fracture and detach.
Risk: A bike rack that detaches from the vehicle increases the risk of a crash.
Fix: Dealers will replace the defective components of the bike rack, free of charge. Owner notification letters are expected to be mailed August 26, 2023. Owners may contact TMC customer service at 1-877-855-2867. TMC's number for this recall is RC000297.
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
Seat Belts 2023-05-03 · TSB 23-02 · Service Bulletin/Repair Instructions
the seatbelts for the rear, side facing seats may be too long for some passengers.
What owners report
2026-10-05 · Electrical System“replaced secondary alternator 3 times. i am using a dc-dc charger from chassis battery now.…”
2026-06-17 · Electrical System:alternator/Generator/Regulator“failed secondary alternator at 21k miles…”
2024-08-26 · Unknown Or Other“the grey water tank empty valve hangs close to the road without support. mine fell off somewhere while driving cross country. this has happened to many owners and i believe it poses a highway safety hazard. …”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.