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Vehicle recall 19V504000 · June 30, 2019

Thor Motor Coach Challenger, Thor Motor Coach Magnitude and 5 more models

The vehicle control system software may cause the slide-out room to move unexpectedly.

Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.

Summary
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.
Consequence
Unexpected movement of the slide-out room can increase the risk of a injury.
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.

Recall details

NHTSA campaign
19V504000
Reported to NHTSA
June 30, 2019
Filed by
Thor Motor Coach
Manufacturer campaign
RC000170
Owner notification
August 1, 2019
Vehicles potentially affected
1,554
Initiated by
the manufacturer
Components
Equipment › Recreational vehicle/trailer
Recall 19V504000 on nhtsa.gov, with the manufacturer’s documents

Vehicles covered

As listed by NHTSA. A recall usually covers only some vehicles of each model and year, often a production date range.

Has your Thor been repaired?

Recalls here come from NHTSA’s records for the model and year. Not every vehicle of a model is included in every recall, and this site can’t see whether a repair has been done. Only a VIN lookup can tell you that.

NHTSA’s VIN search doesn’t show recalls that were already repaired, recalls more than 15 years old, or some small manufacturers’ recalls. A Thor dealer can also check your VIN. Recall repairs are free.