Thor Motor Coach Quantum problems & recalls

Problem: Thor motor coach (tmc) is recalling certain 2026 geneva, 2025-2026 quantum, four winds, pasadena, eddie bauer, chateau, freedom elite, and coleman recreational vehicles. a p-clamp may not have been installed, allowing the liquid propane (lp) generator hose to contact the exhaust.

Risk: A lp hose that contacts the generator exhaust increases the risk of a fire.

Fix: Dealers will install a p-clamp to secure the lp hose, free of chare. owner notification letters were mailed december 15, 2025. owners may contact tmc customer service at 1-877-855-2867. tmc's number for this recall is rc000335.

Problem: Thor motor company (tmc) is recalling certain 2023-2026 axis, chateau, four winds, 2023-2025 coleman, echelon, freedom elite, geneva, outlaw, quantum, vegas, 2025 eddie bauer, freedom traveler, pasadena, and 2024-2025 magnitude motorhomes. the slide-out room can be deployed without the parking brake engaged, allowing the room to extend while the vehicle is in motion.

Risk: A slide-out room that extends unexpectedly increases the risk of a crash.

Fix: Dealers will replace the park brake harness, free of charge. owner notification letters were mailed april 28, 2025. owners may contact tmc customer service at 1-877-855-2867. tmc's number for this recall is rc000325.

Problem: Thor motor coach (tmc) is recalling certain 2022-2023 four winds, quantum, chateau, and 2022 geneva motorhomes. the electric retractable awning has a welded seam on the fabric that may separate, potentially allowing the awning to drop beyond normal operation.

Risk: An awning that drops or extends beyond normal operation can increase the risk of injury.

Fix: Dealer will repair or replace the awnings, free of charge. owner notification letters were mailed by september 16, 2022. owners may contact tmc customer service at 1-877-855-2867.

Problem: Thor motor coach (tmc) is recalling certain 2022 scope, tellaro, sanctuary, delano, sequence, tranquility, rize, synergy, quantum, magnitude, geneva, compass, chateau, four winds, and 2022-2023 tiburon, and gemini vehicles. the quick disconnect fittings in the lp gas system may be cracked, causing a gas leak.

Risk: A gas leak in the presence of an ignition source can increase the risk of a fire.

Fix: Dealers will replace the quick disconnect fittings, free of charge. owner notification letters were mailed june 27, 2022. owners may contact tmc customer service at 1-877-855-2867.

Problem: 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.

Risk: Water may get into the bim/bir and create electrical arcing, increasing the risk of a fire.

Fix: 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.

Problem: 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.

Risk: 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.

Fix: 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.

Problem: Thor motor coach (tmc) is recalling certain 2021 daybreak, four winds, quantum, chateau, and freedom elite motorhomes built on the 2020 ford e-series chassis. the battery cable may not have been properly secured within the chassis rail, which can cause it to contact the exhaust manifold and heat shield.

Risk: Battery cable contact with the exhaust manifold and heat shield can increase the risk of a fire.

Fix: Tmc will notify owners, and dealers will inspect the routing of the battery cable. if needed the cable will be re-routed and properly secured, free of charge. this recall began september 11, 2020. owners may contact tmc customer service at 1-877-855-2867. tmc's number for this recall is rc000197.

Problem: 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.

Risk: If the brake fluid leaks, this may extend the braking distance, increasing the risk of a crash.

Fix: 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.

Problem: 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.

Risk: 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.

Fix: 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.

Problem: 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).

Risk: 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.

Fix: 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.

Problem: 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.

Risk: 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.

Fix: 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.

Problem: 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."

Risk: Without the seatbelt warning reminder, the driver may forget to fasten the seatbelt, increasing the risk of injury in the event of a crash.

Fix: 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.