NHTSA vehicle safety data
2020 Thor Motor Coach Four Winds Recalls & Complaints
The 2020 Thor Motor Coach Four Winds has 9 NHTSA recall campaigns and 1 owner complaint on file as of November 3, 2026. Recall repairs are usually free at an authorized Thor Motor Coach dealer.
NHTSA recall and complaint data for the 2020 Thor Motor Coach Four Winds. Recall data is refreshed daily from NHTSA.
2020 Thor Motor Coach Four Winds owner complaints
Owners have filed 1 complaint with NHTSA about the 2020 Thor Motor Coach Four Winds, describing incidents dated May 1, 2020.
Most-cited components
- Equipment 1 complaint
- Structure 1 complaint
Newest complaints
ODI #11391026 · Filed
TL* THE CONTACT OWNS A 2020 THOR MOTOR COACH FOUR WINDS. THE CONTACT STATED THAT WHILE DRIVING ON A WINDY DAY AT VARIOUS SPEEDS, THE DRIVER'S SIDE SLIDE-OUT EXTENDED WITHOUT WARNING. THE CONTACT PULLED OVER TO RE-INSERT THE SLIDE-OUT. THE VEHICLE WAS TAKEN TO LA MESA RV CENTER MESA (1740 S MESA DR…
BIM/BIR Is Not Watertight
NHTSA #20V711000 · Electrical System · NHTSA notice
Reported November 17, 2020 · Thor Motor Coach
Potentially affected: 1,074 vehicles
Repair completion: 66.48% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)
Thor Motor Coach campaign RC000206 · Owners notified January 13, 2021
Defect description
Thor Motor Coach (TMC) is recalling certain 2020-2021 Daybreak, Four Winds, Chateau, Freedom Elite, Quantum motorhomes built on a Chevrolet chassis. The BIM (Battery Isolation Manager)/BIR (Battery Isolation Relay) is not watertight when exposed to engine compartment heat.
Safety consequence
Water may get into the BIM/BIR and create electrical arcing, increasing the risk of a fire.
Manufacturer remedy
TMC will notify owners, and dealers will replace the BIM/BIR with a Trombetta solenoid, free of charge. The recall began January 13, 2021. Owners may contact TMC customer service at 1-877-855-2867. TMC's number for this recall is RC000206.
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.
Incorrect Diameter Bolts Installed/FMVSS 207, 210
NHTSA #20V458000 · Seat Belts · NHTSA notice
Reported August 5, 2020 · Thor Motor Coach
Potentially affected: 248 vehicles
Repair completion: 35.92% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)
Thor Motor Coach campaign RC000202 · Owners notified September 14, 2020
Defect description
Thor Motor Coach (TMC) is recalling certain 2020-2021 Daybreak 23DB, 2018-2021 Four Winds 23U, and 2018-2021 Chateau 23U motorhomes. Bolts of the wrong size were used to secure the barrel chair pedestals, allowing the pedestal to separate from the floor in the event of a crash. As such, these motorhomes fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 207, "Seating Systems" and number 210, "Seat Belt Assembly Anchorages."
Safety consequence
If the pedestal were to separate from the floor during a crash, the seat belt anchorages may fail, increasing the risk of injury.
Manufacturer remedy
TMC will notify owners, and dealers will inspect the pedestal bolt size, correcting the hardware as necessary, free of charge. This recall began September 14, 2020. Owners may contact TMC customer service at 1-877-855-2867. TMC's number for this recall is RC000202.
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.
Front Seat Wiring Harnesses Routed Incorrectly
NHTSA #20V444000 · Air Bags · NHTSA notice
Reported July 29, 2020 · Thor Motor Coach
Potentially affected: 463 vehicles
Thor Motor Coach campaign RC000200 · Owners notified August 13, 2020
Defect description
Thor Motor Coach (Thor) is recalling certain 2020-2021 Daybreak, Four Winds, Quantum, Delano, Tiburon, Chateau and Freedom Elite motorhomes and 2020 Gemini, Chateau Citation, Compass, Siesta, and Synergy motorhomes built on Sprinter Van chassis (platform 970 (VS30), equipped with swivel seats. The wiring harnesses for the front seats may have been routed incorrectly and could become jammed and damaged in the swivel seat frames.
Safety consequence
If the wiring harness is damaged, the side air bag within the seat may deploy inadvertently or not deploy as designed in the event of a crash, increasing the risk of injury to vehicle occupants.
Manufacturer remedy
Thor will notify owners, and Mercedes-Benz dealers will inspect the wire harness routing for both front seats and will repair the wiring and add clips or cable ties as needed, free of charge. This recall began August 13, 2020. Owners may contact Thor customer service at 1-877-855-2867 Mercedes-Benz customer service at 1-877-762-8267. Thor's number for this recall is RC000200.
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.
Front Brake Hoses May Contact Fender Liners
NHTSA #20V312000 · Structure — Frame and Members — Underbody Shields · NHTSA notice
Reported May 28, 2020 · Thor Motor Coach
Potentially affected: 566 vehicles
Thor Motor Coach campaign RC000191 · Owners notified June 25, 2020
Defect description
Thor Motor Coach (TMC) is recalling certain 2020 Daybreak, Four Winds, Delano, Gemini, Quantum, Tiburon, Chateau Citation, Compass, Chateau, Siesta, Freedom Elite, and Synergy motorhomes built on Mercedes Benz Sprinter chassis [platform 907 (VS30)]. The rear part of the fender liner on the front axle may contact and chafe the brake hose, possibly resulting in a loss of brake fluid.
Safety consequence
If the brake fluid leaks, this may extend the braking distance, increasing the risk of a crash.
Manufacturer remedy
TMC will notify owners, and an authorized Mercedes-Benz dealer will inspect the brake hoses for chafing and replacement if necessary. The fender liner will also be altered to permit more clearance. All repairs will be performed free of charge. This recall began June 25, 2020. Owners may contact TMC customer service at 1-877-855-2867. TMC's number for this recall is RC000191.
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.
Wire Harness May Chafe and Damage Circuits
NHTSA #20V303000 · Electronic Stability Control (ESC) · NHTSA notice
Reported May 27, 2020 · Thor Motor Coach
Potentially affected: 34 vehicles
Thor Motor Coach campaign RC000189 · Owners notified June 25, 2020
Defect description
Thor Motor Coach (TMC) is recalling certain 2020-2021 Quantum, Chateau and Four Winds, and 2020 Vegas and Axis motorhomes built on a Ford E-series chassis. A wire harness in the rear of the vehicle may contact the vehicle frame, resulting in damage to the circuits that support the fuel pump and the anti-lock braking system (ABS).
Safety consequence
Damage to the fuel pump circuit in the wiring harness could result in an unexpected engine stall. Damage to the ABS wiring can lead to reduction of ABS functionality and a loss of roll stability control (RSC) functionality. These scenarios increase the risk of a crash.
Manufacturer remedy
TMC will notify owners, and Ford dealers will inspect the wire harness for damage. If no damage is found, dealers will apply anti-abrasion tape over the area and ensure clearance to surrounding components. If damage is found, dealers will splice in new wire and apply anti-abrasion tape over the area and ensure clearance to surrounding components. All services will be performed free of charge. The recall The recall began June 25, 2020., 2020. Owners may contact TMC customer service at 1-877-855-2867. TMC's number for this recall is RC000189.
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.
Incorrect Auto-P Information in Owner's Manual
NHTSA #20V308000 · Power Train — Automatic Transmission · NHTSA notice
Reported May 27, 2020 · Thor Motor Coach
Potentially affected: 566 vehicles
Thor Motor Coach campaign RC000190 · Owners notified June 25, 2020
Defect description
Thor Motor Coach (TMC) is recalling certain 2020 Daybreak, Four Winds, Delano, Gemini, Quantum, Tiburon, Chateau Citation, Compass, Chateau, Siesta, Freedom Elite, and Synergy motorhomes built on Mercedes-Benz Sprinter chassis [platform 907 (VS30)] equipped with automatic transmissions. The owner's manual does not correctly specify the certain conditions under which the automatic parking function (Auto-P) operates.
Safety consequence
If a customer were to rely on the Auto-P function as described in the Operator's Manual, the possibility of a vehicle rollaway or unintended vehicle movement cannot be ruled out which could increase the risk of a crash.
Manufacturer remedy
TMC will notify owners, and a Mercedes Benz dealer will supplement the Operator's Manual with a correct description of the Auto-P function equipped in the vehicle. This recall began June 25, 2020. Owners may contact TMC customer service at 1-877-855-2867. TMC's number for this recall is RC000190.
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.
Driveshaft May Separate From Rear Axle
NHTSA #20V178000 · Power Train — Driveline — Differential Unit · NHTSA notice
Reported March 25, 2020 · Thor Motor Coach
Potentially affected: 22 vehicles
Thor Motor Coach campaign RC000188 · Owners notified March 19, 2020
Defect description
Thor Motor Coach (TMC) is recalling certain 2020 Chateau 31W and 31WV, Quantum KW29 and LF31, Vegas 24.1 and Axis 24.1 motorhomes and 2020-2021 Four Winds 24F, 28Z, and 31E motorhomes built on a Ford chassis. The rear axle differential may have an insufficient amount of fluid, possibly resulting in a failure of the rear axle assembly and a driveshaft separation.
Safety consequence
If the driveshaft separates, there may be a loss of drive, increasing the risk of crash. Additionally, if the parking brake is not applied, unintended vehicle movement can occur if the transmission is left in Park, increasing the risk of injury or crash.
Manufacturer remedy
Ford will notify owners, and Ford or Lincoln dealers will inspect the rear axle differential fluid level and adjust it, or replace the rear axle as necessary, free of charge. The recall is began May 22, 2020. Owners may contact Ford customer service at 1-866-436-7332 or TMC customer service at 1-877-855-2867. TMC's number for this recall is RC000188.
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.
Delay In Seatbelt-Unfastened Telltale/FMVSS 208
NHTSA #19V775000 · Electrical System — Instrument Cluster/Panel · NHTSA notice
Reported October 28, 2019 · Thor Motor Coach
Potentially affected: 378 vehicles
Thor Motor Coach campaign RC000177 · Owners notified October 3, 2019 · Vehicles built November 26, 2018 – October 23, 2019 (per NHTSA)
Defect description
Thor Motor Coach (TMC) is recalling certain 2019-2020 Chateau 22B, 22E, 23U, 24F, 25V, and 28A, Daybreak 22GO, Four Winds 22B, 22E, 24F, 26B and 28A, Freedom Elite 22HE and 2020 Quantum GR22, and SE22 motorhomes. The seatbelt-unfastened warning light will not illuminate for approximately five seconds after the ignition is moved to the "on" or "start" position. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 208, "Occupant Crash Protection."
Safety consequence
Without the seatbelt warning reminder, the driver may forget to fasten the seatbelt, increasing the risk of injury in the event of a crash.
Manufacturer remedy
GM will notify TMC owners, and dealers will reprogram the instrument panel cluster, free of charge. The recall began October 3, 2019. Owners may contact Chevrolet customer service at 1-800-630-2438, GMC customer service at 1-800-462-8782 or TMC customer service at 1-877-855-2867. TMC's number for this recall is RC000177.
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.
Loose Battery Cables May Cause Fire
NHTSA #19V609000 · Electrical System — 12V/24V/48V Battery — Cables · NHTSA notice
Reported August 20, 2019 · Thor Motor Coach
Potentially affected: 1,941 vehicles
Repair completion: 87.36% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)
Thor Motor Coach campaign RC000172 · Owners notified October 10, 2019 · Vehicles built March 15, 2019 – July 16, 2019 (per NHTSA)
Defect description
Thor Motor Coach (TMC) is recalling certain 2020 Chateau, Daybreak, Four Winds, Freedom Elite, Majestic, Outlaw and Quantum motorhomes. The battery cables may loosen on the battery isolation manager (BIM) or battery isolation relay (BIR), causing premature BIN/BIR failure or electrical arcing.
Safety consequence
The loose connection can causing arcing, increasing the risk of a fire.
Manufacturer remedy
TMC will notify owners, and dealers will install lock washers to properly secure the battery cable to the BIM/BIR. If the cable was loose, dealers will also replace the BIM/BIR, free of charge. The recall began October 10, 2019. Owners may contact TMC customer service at 1-877-855-2867. TMC's number for this recall is RC000172.
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.
Other Thor Motor Coach Four Winds model years
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