2021 Thor Motor Coach QUANTUM: complaints, problems and recalls

WE PICKED UP OUR NEW RV MOTORHOME FROM OUR DEALER TWO WEEKS AGO AND PARKED IT BEHIND OUR HOUSE, A DISTANCE OF APPROX. 25 MILES. LAST WEEK WE BEGAN TO LOAD IT WITH SOME CLOTHING AND SUPPLIES SO WE COULD TAKE IT OUT ON A TEST RIDE IN A FEW WEEKS. WHILE DOING A CAREFUL CHECK OF THE RV I FOUND THAT THE POWER OUTPUT CABLE OF THE RV'S GENERATOR WAS LAYING DIRECTLY ON THE GENERATOR'S EXHAUST PIPE AND HAD MELTED OVER 3/4 THROUGH. WHEN I LIFTED THE CABLE OFF THE PIPE I COULD SEE HOW BADLY DAMAGED THE PROTECTIVE CABLE WAS AND EXPECTED THE INSULATION ON …

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Drove from Gibson Louisiana to Abita Springs Ocean Canyon RV park. Upon arrival we had a buzzer alert going off under dash, we then parked to RV. Tried to put jacks down, did not respond, tried 12v lights did not work, tried slides, again no response. We then plugged in and were able to get jacks and slides out, some lights worked. Still alarm under dash, checked 12 coach battery, almost dead. Called a mobile RV tech, 2 1/2 hours later, he found a ground bolt had come off with 3 grounding wires on it. Tech advised that bolt was only tacked o…

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I bought this RV as a new 2023 Thor Quantum MB24 . After a recall performed by Mercedez of Pleasanton , California ( after the VIN no. was punched on their computer ) , it shows as a 2021 Model year . How would I know if I was sold a pre - owned Motor Vehicle or a new one ? It has 2000+ miles in accordance to RECVAN @ Fremont , California , was acquired driven from Elkhart , Indiana to California . There were few issues and problems that I found out later after I had the RV parked outside my resident in Mountain House , California : Dirty outsi…

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Drove from Gibson Louisiana to Abita Springs Ocean Canyon RV park. Upon arrival we had a buzzer alert going off under dash, we then parked to RV. Tried to put jacks down, did not respond, tried 12v lights did not work, tried slides, again no response. We then plugged in and were able to get jacks and slides out, some lights worked. Still alarm under dash, checked 12 coach battery, almost dead. Called a mobile RV tech, 2 1/2 hours later, he found a ground bolt had come off with 3 grounding wires on it. Tech advised that bolt was only tacked o…

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The contact owns a 2024 Thor Quantum RV. The contact stated that while parked with the engine idling, the RV started to vibrate and shake before shutting off. The contact was unable to restart the RV. The RV was later towed to the local mechanic. The local mechanic diagnosed the RV and determined that the fuel pump control module had failed due to condensation from the A/C drainage pipe leaking onto the module. The module was replaced, and the RV was repaired. The contact was informed that due to the design location of the A/C drainage pipe be…

Look up ODI 11696136 at NHTSA ↗

Drove from Gibson Louisiana to Abita Springs Ocean Canyon RV park. Upon arrival we had a buzzer alert going off under dash, we then parked to RV. Tried to put jacks down, did not respond, tried 12v lights did not work, tried slides, again no response. We then plugged in and were able to get jacks and slides out, some lights worked. Still alarm under dash, checked 12 coach battery, almost dead. Called a mobile RV tech, 2 1/2 hours later, he found a ground bolt had come off with 3 grounding wires on it. Tech advised that bolt was only tacked o…

Look up ODI 11666286 at NHTSA ↗

The contact owns a 2024 Thor Quantum RV. The contact stated that while parked with the engine idling, the RV started to vibrate and shake before shutting off. The contact was unable to restart the RV. The RV was later towed to the local mechanic. The local mechanic diagnosed the RV and determined that the fuel pump control module had failed due to condensation from the A/C drainage pipe leaking onto the module. The module was replaced, and the RV was repaired. The contact was informed that due to the design location of the A/C drainage pipe be…

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Three original equipment Hankook Dynapro HT tires developed belt-related failures at approximately 6,000 miles of use during a road trip in June 2026. On [XXX], while driving in Tennessee, we noticed a vibration that gradually increased in intensity. We stopped for inspection at C&D Tire & Service in Athens, TN, which found a "bad belt" in the left-front tire at an odometer reading of 5,649 miles. The tire was replaced and retained. The following day, [XXX], the vibration returned and worsened. We stopped at Bill Morgan Tire in Lexington, KY,…

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SUMMARY: WHERE DO I START, EXCEPT EVERYONE IS SAFE. DRIVING TO DISNEY WITH THE FAMILY FOR CHRISTMAS (DAUGHTER JOINING US FROM COLLEGE) AND WE SUDDENLY HEAR A LOUD BANG FROM THE CAB; THE STARLIGHT WINDOW BLEW OUT/ OFF. WE WERE THE ONLY ONES ON THE ROAD (DOING ABOUT 50 MPH) AND NOTHING HIT US, LOOKS LIKE THE GLUE/SEAL JUST GAVE WAY! THE OTHER THING I WAS SURPRISED THERE WERE SHARP GLASS SHARDS IN THE CAMPER AND THE GLASS DID NOT SHATTER INTO SMALL SQUARES ONE TYPICALLY SEES WITH SAFETY GLASS. HONESTLY, IT COULD HAVE BEEN WORSE IF THE GLASS PAN…

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I own a 2022 Thor Quantum LC22 motorhome build on a 2022 Ford E350 chassis. The rear dually tires were installed with Dicor brand inner tire valve extenders. These extenders are attached to the outer wheels using a plastic clip. The plastic clip on the driver's side extender broke off, causing the extender device to hang free. As I was driving the vehicle, the device wedged between the tires and cut the sidewalls on both, causing a sudden flat tire. Both tires needed to be replaced. When at the repair shop, the mechanic found the other valve ex…

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