Does the 2021 Thor Motor Coach Quantum have any recalls?

4 recalls found in NHTSA data as of September 22, 2026, covering: electrical system, seats, air bags, electronic stability control (esc), service brakes, hydraulic. Recalls apply to the model and year; whether a particular vehicle is included, and whether it has been repaired, depends on its VIN.

How do I check if my 2021 Thor Motor Coach Quantum recall has been fixed?

Enter your 17-character VIN at nhtsa.gov/recalls, or ask a Thor Motor Coach dealer. Recall repairs are free. NHTSA's VIN search doesn't list recalls that were already repaired.

How many complaints have owners filed about the 2021 Thor Motor Coach Quantum?

0 complaints filed with NHTSA. Complaints are unverified reports from the public that NHTSA uses to decide what to investigate.

2021 Thor Motor Coach Quantum recalls

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

4 recalls found in NHTSA data as of September 22, 2026

For the 2021 Thor Motor Coach Quantum. These apply to the model and year, not to one particular vehicle: check your VIN to see whether yours is included and whether it has been repaired.

Has your Thor Motor Coach 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.

Check your VIN with NHTSA

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 Motor Coach dealer can also check your VIN. Recall repairs are free.

2021 Thor Motor Coach Quantum recalls, newest first

November 17, 2020NHTSA 20V7110001,074 vehicles potentially affected

Electrical system

Summary: 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.
Consequence: Water may get into the BIM/BIR and create electrical arcing, increasing the risk of a fire.
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.

This recall on nhtsa.gov

July 29, 2020NHTSA 20V444000463 vehicles potentially affected

Seats

Summary: 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.
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.
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.
Components: Seats; Air bags; Electrical system › Wiring

This recall on nhtsa.gov

July 20, 2020NHTSA 20V41900063 vehicles potentially affected

Electrical system › 12V/24V/48V battery › Cables

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

This recall on nhtsa.gov

May 27, 2020NHTSA 20V30300034 vehicles potentially affected

Electronic stability control (ESC)

Summary: 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).
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.
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.
Components: Electronic stability control (ESC); Electrical system › Wiring; Service brakes, hydraulic › Antilock/traction control/electronic limited slip

This recall on nhtsa.gov

Owner complaints

No owner complaints about the 2021 Thor Motor Coach Quantum were found in NHTSA’s complaint data.

Other Thor Motor Coach Quantum years

Other 2021 Thor Motor Coach models

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Questions

Does the 2021 Thor Motor Coach Quantum have any recalls?: 4 recalls found in NHTSA data as of September 22, 2026, covering: electrical system, seats, air bags, electronic stability control (esc), service brakes, hydraulic. Recalls apply to the model and year; whether a particular vehicle is included, and whether it has been repaired, depends on its VIN.
How do I check if my 2021 Thor Motor Coach Quantum recall has been fixed?: Enter your 17-character VIN at nhtsa.gov/recalls, or ask a Thor Motor Coach dealer. Recall repairs are free. NHTSA's VIN search doesn't list recalls that were already repaired.
How many complaints have owners filed about the 2021 Thor Motor Coach Quantum?: 0 complaints filed with NHTSA. Complaints are unverified reports from the public that NHTSA uses to decide what to investigate.