NHTSA campaign 19V504000 · Thor campaign RC000170
Thor and Thor Motor Coach Recall 19V-504: Slide Room may Move
NHTSA recall 19V504000 (Thor campaign RC000170) was reported by Thor Motor Coach on June 30, 2019, with 1,554 vehicles potentially affected (per NHTSA). NHTSA's record lists the Thor Motor Coach Challenger, Thor Motor Coach Magnitude, Thor Motor Coach Miramar and more for model years 2019–2020. Owners were notified on August 1, 2019, per NHTSA.
Updated daily from NHTSA's recall files
Is my vehicle included?
This page lists, by model year, the vehicles NHTSA's recall record names for campaign 19V504000 in the model years try.vin imports (1995 and later); NHTSA's own record can list more. A model year on the list doesn't mean every vehicle of that year is included, and some may already have been repaired.
To see whether a specific vehicle is included and still needs the repair, enter its VIN at nhtsa.gov/recalls.
Free VIN check: decode a VIN to see its year, make and model.
Key facts
- NHTSA campaign
- 19V504000 (also written 19V-504 or 19V504)
- Filed by
- Thor Motor Coach
- Thor campaign number
- RC000170
- Report received
- Potentially affected
- 1,554 vehicles (per NHTSA)
- Component
- Equipment — Recreational Vehicle/Trailer
- Owners notified
Repair completion: 84.55% (latest rate the manufacturer reported to NHTSA; dataset updated October 21, 2026)
NHTSA cautions against comparing completion rates across recalls or manufacturers. How try.vin reads them.
Vehicles listed for this recall
NHTSA's recall record lists these vehicles for recall 19V504000. try.vin imports model years 1995 and later, so NHTSA's own list can be longer. Model years with a try.vin recall page link to it. Build dates are NHTSA's range for a model year (per NHTSA); a vehicle built in that range is not necessarily included.
Thor
Thor Palazzo
- 2019 · Vehicles built April 2, 2018 – June 19, 2019 (per NHTSA)
Thor Motor Coach
Thor Motor Coach Challenger
Thor Motor Coach Magnitude
Thor Motor Coach Miramar
Thor Motor Coach Omni
Thor Motor Coach Outlaw
Thor Motor Coach Palazzo
- 2020 · Vehicles built April 2, 2018 – June 19, 2019 (per NHTSA)
NHTSA's recall notice
As NHTSA's recall record states it for campaign 19V504000.
Defect description
Thor Motor Coach (TMC) is recalling certain 2019-2020 Challenger, Miramar, Magnitude, Outlaw, Omni, and Palazzo motorhomes. The vehicle control system software may cause the slide-out room to move unexpectedly.
Safety consequence
Unexpected movement of the slide-out room can increase the risk of a injury.
Manufacturer remedy
TMC will notify owners, and dealers will update the affected software, free of charge. The recall is expected to begin August 28, 2019. Owners may contact TMC customer service at 1-877-855-2867. TMC's number for this recall is RC000170.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
Sources
Official NHTSA notice for recall 19V504000
Campaign details come from NHTSA's recall files, which try.vin imports once a day. The plain-language subject and the completion rate come from the U.S. Department of Transportation's Recalls Data dataset. How try.vin reads recall data.