RoadVitals

2021 Thor Motor Coach Quantum

Recalls, owner-reported complaints, investigations and safety data

Owner complaintsComplaints are reports submitted to NHTSA by owners and drivers. NHTSA does not verify most reports before publishing them, and a complaint does not establish that a defect exists. Volume is influenced by how many of a vehicle were sold, how long it has been on the road, and how much attention an issue has received.
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Safety recallsA safety recall is issued when a manufacturer or NHTSA determines that a vehicle has a safety-related defect or does not comply with a federal motor vehicle safety standard. Recall repairs are free. Whether a specific vehicle is covered depends on its VIN — a recall listed for a model year does not necessarily apply to every vehicle of that year.
4
Latest Nov 17, 2020
InvestigationsNHTSA opens an investigation to examine whether a safety defect may exist. An open investigation is not a determination that a defect exists, and many investigations close without a recall. Investigations can, however, lead to one.
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Crash or fire reportedComplaints whose submitter recorded that a crash or a fire occurred. These are the reporter's own answers on the NHTSA form, not verified findings.
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Overview

Our database contains no NHTSA owner-reported complaints for the 2021 Thor Motor Coach Quantum. 4 safety recalls have been issued covering this model year; and 6 manufacturer communications are on file.

Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.

Safety recalls

4 campaigns cover this model year

View all 4

Recalls apply to specific vehicles, not to every vehicle of a model year. Check your VIN with NHTSA or your manufacturer's dealer to confirm whether a recall affects your vehicle.

Check a VIN on NHTSA.gov
20V711000

ELECTRICAL SYSTEM

Nov 17, 2020
1,074 units potentially affected
The defect: 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.
The risk: Water may get into the BIM/BIR and create electrical arcing, increasing the risk of a fire.
The 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.
Thor Motor CoachManufacturer number RC000206View on NHTSA.gov
20V444000

AIR BAGS; ELECTRICAL SYSTEM:WIRING; SEATS

Jul 29, 2020
463 units potentially affected
The defect: 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.
The 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.
The 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.
Thor Motor CoachManufacturer number RC000200View on NHTSA.gov
20V419000

ELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES

Jul 20, 2020
63 units potentially affected
The defect: 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.
The risk: Battery cable contact with the exhaust manifold and heat shield can increase the risk of a fire.
The remedy: 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.
Thor Motor CoachManufacturer number RC000197View on NHTSA.gov

Recent owner complaints

Reports submitted to NHTSA, shown in the owner's own words

No owner complaints recorded for this model year

Either none have been filed with NHTSA, or this vehicle is too new for reports to have accumulated.

Manufacturer communications

A bulletin sent by a manufacturer to its dealers. Not a recall, and repairs are not necessarily free.

RC000220SADealer

SERVICE BRAKES

MBAG has determined that on certain model year 2019-2020 Sprinter vehicles, the retaining washer on the bolt that connects the brake pedal to its bearing block could come loose. If the retaining washer were to come loose, over time it could detach from the bolt, and in the worst case and with ongoing use of the brake pedal, the bolt might separate from the bearing block on one side. If this were to occur, the brake lamp switch could become continuously activated even when the brake pedal is not pressed. If the brake lamps are continuously illuminated, it would not be possible for following traffic to determine the braking intention of the vehicle, which could increase the risk of a crash. This affects the following Thor Motor Coach products: model year 2020-2021 Citation, Compass, Daybreak, Delano, Four Winds, Freedom Elite, Gemini, Quantum, Siesta, Synergy, and Tiburon motorhomes.

RC000220SAOwner

SERVICE BRAKES

MBAG has determined that on certain model year 2019-2020 Sprinter vehicles, the retaining washer on the bolt that connects the brake pedal to its bearing block could come loose. If the retaining washer were to come loose, over time it could detach from the bolt, and in the worst case and with ongoing use of the brake pedal, the bolt might separate from the bearing block on one side. If this were to occur, the brake lamp switch could become continuously activated even when the brake pedal is not pressed. If the brake lamps are continuously illuminated, it would not be possible for following traffic to determine the braking intention of the vehicle, which could increase the risk of a crash. This affects the following Thor Motor Coach products: model year 2020-2021 Citation, Compass, Daybreak, Delano, Four Winds, Freedom Elite, Gemini, Quantum, Siesta, Synergy, and Tiburon motorhomes.

TSB 20-01

ELECTRICAL SYSTEM

From November 2020 to February 2021, units produced at Plant 250 have a wire missing that would cause the 120VAC load shedding to not work properly. This affects model year 2021 31E, 31EV, 31W, 31WV, SL31, SE31, LF31, and WS31 floor plans with the 2 A/C option

TSB 21-01

ELECTRICAL SYSTEM

From November 2020 to February 2021, units produced at Plant 250 have a wire missing that would cause the 120VAC load shedding to not work properly. This affects model year 2021 31E, 31EV, 31W, 31WV, SL31, SE31, LF31, and WS31 floor plans with the 2 A/C option

RC000212SADealer

ENGINE AND ENGINE COOLING

On your vehicle, it may be possible that the engine cover insulation does not fully extend to the perimeter of the factory engine cover. In addition, vehicles built on a Ford chassis may have higher engine compartment temperatures during certain idle conditions. This may result in elevated temperatures at certain areas of the engine cover surface in the passenger compartment on both driver and passenger sides. Direct and continuous contact with exposed skin at these locations may cause skin irritation and/or a minor burn. This affects the following Thor Motor Coach products: model year 2021/2022 Axis, Chateau, Coleman, Daybreak, Four Winds, Freedom Elite, Magnitude, Majestic, Outlaw, Quantum, and Vegas motorhomes

RC000212SAOwner

ENGINE AND ENGINE COOLING

On your vehicle, it may be possible that the engine cover insulation does not fully extend to the perimeter of the factory engine cover. In addition, vehicles built on a Ford chassis may have higher engine compartment temperatures during certain idle conditions. This may result in elevated temperatures at certain areas of the engine cover surface in the passenger compartment on both driver and passenger sides. Direct and continuous contact with exposed skin at these locations may cause skin irritation and/or a minor burn. This affects the following Thor Motor Coach products: model year 2021/2022 Axis, Chateau, Coleman, Daybreak, Four Winds, Freedom Elite, Magnitude, Majestic, Outlaw, Quantum, and Vegas motorhomes.

Manufacturers file copies of the bulletins they send to dealers with NHTSA. These often describe diagnostic or repair procedures for a known condition. They are not recalls: repairs described in a bulletin are usually only free if the vehicle is still under warranty or the manufacturer has extended coverage.

Compare model years

Complaint and recall counts across every year of this model

Thor Motor Coach Quantum by model year
YearComplaintsRecallsInvestigationsIssue Index
2026010—
2025120—
2024210—
2023120—
2022120—
2021Viewing040—
2020070—
2019030—
2018120—
2017030—
2016110—

Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers. Older model years have had longer for reports to accumulate.