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2017 Thor Motor Coach Ace problems

The most common problem on the 2017 Thor Motor Coach Ace is electrical system. Its complaint count is close to a typical Ace model year.

Typical yearClose to a typical year
Owner complaints
3
Recalls
4
Service bulletins
2
Worst area
Electrical

The worst 2017 Thor Motor Coach Ace problems

Ranked by number of owner complaints. Mileage and cost come from what owners wrote.

  • Electrical
    2
  • Body
    1
  • Locks
    1
  • Tires
    1

Problems by type

Tap a problem to see which part fails, at what mileage and in which other years.

  • Electrical
    2
  • Body
    1
  • Locks
    1
  • Tires
    1

Recalls 4

EquipmentReported November 22, 2017 · 110,400 vehicles affected
What is wrong
Thor Motor Coach (Thor) is recalling various 2003-2018 recreational vehicles, equipped with Kidde Plastic-Handle or Push Button 'Pindicator' Fire Extinguishers. See a list of the affected trailer models at: These extinguishers may become clogged, preventing the extinguisher from discharging as expected or excessive force may be needed to activate the extinguisher. Additionally, in certain models, the nozzle may detach from the valve assembly with enough force that it could cause injury and also render the product inoperable. For a full list of the affected fire extinguisher models visit:
Risk
In the event of a fire, if the fire extinguisher does not function properly, it can increase the risk of injury.
Remedy
Thor will notify owners, instructing them to contact Kidde for a replacement fire extinguisher, free of charge. The recall began on January 15, 2018. Owners may contact Thor customer service at 1‑877‑500‑1020, or Kidde customer service toll-free at 1‑855‑262‑3540, or online at www.kidde.com and click on "Product Safety Recall" for more information.

Recall number 17V758000 · Recall details

Equipment: other: labelsReported April 10, 2017 · 148 vehicles affected
What is wrong
Thor Motor Coach (TMC) is recalling certain 2017 Ace, Hurricane, and Windsport motorhomes. The weight rating labels for the tow hitches on these vehicles indicate a 10,000lb weight capacity when the actual hitch capacity is 8,000lbs.
Risk
If the hitch is loaded to the capacity on the label, the hitch may damage the motorhome or the hitch may disconnect from the tow vehicle, increasing the risk of the crash.
Remedy
TMC will notify owners and provide them corrected labels, free of charge. The recall began on May 22, 2017. Owner's may contact TMC customer service at 1‑877‑500‑1020.

Recall number 17V239000 · Recall details

Equipment: recreational vehicle/trailerReported August 2, 2016 · 5,633 vehicles affected
What is wrong
Thor Motor Coach (Thor) is recalling certain model year 2012-2017 Ace, 2013 Citation, 2012-2013 Siesta and 2017 Four Winds and Road Bear Rental motorhomes. The affected vehicles are equipped with shower curtains that may not adequately resist catching fire in the presence of an ignition source. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 302, "Flammability of Interior Materials."
Risk
A flammable shower curtain may further fuel a fire, increasing the risk of injury.
Remedy
Thor will notify owners, and dealers will replace the shower curtains with curtains made with fire retardant, free of charge. The recall began on September 15, 2016. Owners may contact Thor customer service at 1‑877‑500‑1020. Thor's number for this recall is RC000121.

Recall number 16V571000 · Recall details

Seat beltsReported April 29, 2016 · 32 vehicles affected
What is wrong
Thor Motor Coach (TMC) is recalling certain model year 2017 ACE and Road Bear Rental motorhomes manufactured February 11, 2016, to March 9, 2016. The seat belt anchorages located in the slide out section may not meet the specified strength requirements, allowing them to pull loose during a crash. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 210, "Seat Belt Assembly Anchorages."
Risk
If the seat belt anchorages pull loose in a crash, they will not properly restrain the occupant, increasing the risk of injury.
Remedy
TMC will notify owners, and dealers will install reinforcement brackets, and plates, free of charge. The recall began on May 27, 2016. Owners may contact TMC customer service at 1‑877‑500‑1020.

Recall number 16V260000 · Recall details

See all 4 recalls for the 2017 Thor Motor Coach Ace

Defect investigations

Trimark 060-1650 Door Latch FailuresOpened November 23, 2020, closed December 13, 2024

On November 23, 2020, the Office of Defects Investigation (ODI) opened PE20021 to investigate allegations of inoperative Trimark THP 060-1650 door lock/latches originally equipped on model years (MY) 2015-2017 Class A and Class C motorhomes.ODI received forty-six Vehicle Owner’s Questionnaires (VOQs) describing consumers being locked in or out of their vehicles.The door latch, containing a die-cast zinc plunger, was produced by Equality during calendar years 2014-2016. The die-cast may become porous and brittle over time and can break without warning, causing the vehicle owner to be unable to open the recreational vehicle door equipped with the latch.If the motorhome does not have any other doors such as some Class A models, occupants could be trapped inside, needing to climb out using the emergency exits. If locked out, owners would be unable to easily get in and retrieve children and pets. ODI analyzed the data provided by Trimark in response to its January 27, 2021 information request letter.Although an elevated failure rate was evident on a specific combination of plunger bolt, door lock/latch assembly and door, the data showed that most failures occurred within the first two years of service on the affected 2015-2017 vehicles.This data suggests that component failures generally would have already occurred.Further, ODI data reflects a downward trend in complaints after calendar year 2018 and for post- MY 2016 vehicles.This downward trend may be attributed Trimark's actions in 2016 such as changes in the manufacturing process of its zinc plunger component for the relevant population and its 2016 decision to switch to a steel plunger. In view of the nature of early-life failure, and failure rate trending downward for model years 2017 and newer, this Preliminary Evaluation (PE) is closed. The closing of this investigation does not constitute a finding by the federal safety agency that a safety-related defect does not exist.The Agency reserves the right to take additional action if warranted by future circumstances. To review the ODI reports cited in the Closing Resume ODI Report Identification Number document, go to

PE20021

Technical service bulletins for the 2017 Thor Motor Coach Ace 2

Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.

What 2017 Thor Motor Coach Ace owners say

Most recent owner complaints, unedited.

Filed Oct 2, 2019 · Body, Locks · 31,000 miles · CA

Tl* the contact owns a 2016 ford f-53. The contact stated that the entry door latch mechanism failed to lock the rv door. The contact was unable to enter the vehicle. The vehicle was not taken to a dealer or independent mechanic for diagnostic testing. The vehicle was repaired. The manufacturer was made aware of the failure and did not assist. The approximate failure mileage was 31,000. *dt*jb*pm consumer stated he had a faulty latch.

Filed Aug 29, 2018 · Electrical, Tires · 5,000 miles · CA

Tl* the contact owns a 2017 thor ace rv equipped with goodyear g6t0rv tires, size: 245/17/r19.5 (na). While driving approximately 55 MPH and towing a trailer with a compact vehicle inside, the rear passenger side inside dual tire suddenly experienced a blowout. During the tire blowout, wires connecting the lighting system that were located in the wheel well were damaged. The failure caused all the exterior lighting to shut off, which prevented the contact from seeing the road at night. The wires were replaced by the owner. The manufacturer and an unknown dealer were notified of the failure. The vehicle and tire failure mileage was 5,000.

Filed Apr 13, 2018 · Electrical · CA

The electrical wiring within the motor coach is not to nfpa's national electrical code nor is it wired to thor's own factory specifications. In addition, the appliances within the coach are not wired to the specifications of the appliance manufacturer. Our motor coach experienced a shorted wire in the water heater junction box due to improper splicing in an area where no splicing should have been necessary. That same electrical circuit which, per the nec and thor's factory specifications should have been on a dedicated breaker, was not on a dedicated breaker which could have allowed the amperage in the junction box to exceed the breaker's capacity and heat to the point of disintegrating the wire's insulation leaving a bare wires. This could have easily LED to a fire. Not only has this resulted in loss of use of the appliance, but has also resulted in complete loss of faith that the rest of the motor home is safe for habitation or for travel on public roads. This is a matter of public safety and should be investigated further.

Compare the 2017 Thor Motor Coach Ace

Other model years

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Questions about the 2017 Thor Motor Coach Ace

Is the 2017 Thor Motor Coach Ace reliable?

Owners have filed 3 complaints about the 2017 Thor Motor Coach Ace, close to a typical Ace model year.

What is the most common problem with the 2017 Thor Motor Coach Ace?

Electrical system, with 2 complaints. Next is body (1).

How many recalls does the 2017 Thor Motor Coach Ace have?

4 recalls, covering equipment and seat belts.

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