RecallRepo

2020 Thor Motor Coach Challenger Recalls

Recalls on record Updated July 2026

The 2020 Thor Motor Coach Challenger has 1 NHTSA recall campaign affecting an estimated 1,554 vehicles. Recall repairs are always free at any authorized dealer. Owners have filed 3 complaints with NHTSA, most often about the electrical system. Last updated July 5, 2026.

Recall campaigns

EQUIPMENT 19V504000 2019-06-30 1,554 affected
Defect

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.

Complaints by component

ELECTRICAL SYSTEM
1
EXTERIOR LIGHTING
1
POWER TRAIN
1
Total complaints3

What owners report

Verbatim reports filed with NHTSA, lightly edited for readability and with personal information removed.

“While traveling on a interstate the vehicle shut completely off. The motor shut off and we lost all power brakes and steering. All power inside and outside shut off so we had no lights on the exterior to see or signal other vehicles. I had to stop the vehicle with the emergency brake.”

ELECTRICAL SYSTEM · reported 2020-09-13

“While traveling on a interstate the vehicle shut completely off. The motor shut off and we lost all power brakes and steering. All power inside and outside shut off so we had no lights on the exterior to see or signal other vehicles. I had to stop the vehicle with the emergency brake.”

POWER TRAIN · reported 2020-09-13

“While traveling on a interstate the vehicle shut completely off. The motor shut off and we lost all power brakes and steering. All power inside and outside shut off so we had no lights on the exterior to see or signal other vehicles. I had to stop the vehicle with the emergency brake.”

EXTERIOR LIGHTING · reported 2020-09-13
Sources & methodology

Recall, complaint, and investigation records from official NHTSA datasets (FLAT_RCL, FLAT_CMPL, FLAT_INV), synced weekly. Counts reflect NHTSA records for the 2020 Thor Motor Coach Challenger as of July 5, 2026. Complaint narratives are consumer-submitted and unverified. This page contains ads and affiliate links. Full methodology.