Thor Motor Coach Axis, Thor Motor Coach Chateau, Thor Motor Coach Four Winds, Thor Motor Coach Quantum, Thor Motor Coach Vegas, model years 2020 to 2021. Filed by Thor Motor Coach and reported to NHTSA on 25 March 2020. 22 vehicles potentially affected.
What the notice says 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 …
Is your vehicle included? Check with your VIN at NHTSA, or ask a dealer. This page is an independent copy of the notice, kept so you can see what changed after it was published. It is not the authority, and the authority’s own text is the one to act on.
TMC's own number for this recall: RC000188. That is the number on the owner letter and on the dealer paperwork. 20V178 is the number NHTSA gave the same campaign, and the number this page is filed under. They are one recall, written two ways.
What owners ask about this recall
- Which vehicles does recall 20V178 cover?
- Thor Motor Coach Axis, Thor Motor Coach Chateau, Thor Motor Coach Four Winds, Thor Motor Coach Quantum, Thor Motor Coach Vegas, model years 2020-2021.
- What is wrong with them?
- 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.
- What can happen if it is not put right?
- 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.
- Is there a fix yet?
- Yes, and it is free. 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.
- What should I do now?
- Check your own vehicle by its VIN with NHTSA, which is the record to act on. Tmc calls this recall RC000188, which is the number on the owner letter and the dealer paperwork.
Answered from the register this site holds. NHTSA is the record to act on.
What the authority says can happen if this is not fixed: “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 in…”
affected
in the notice
caught
| Campaign | 20V178 |
|---|---|
| Filed by | Thor Motor Coach |
| System at fault | Power Train:Driveline:Differential Unit |
| Reported to NHTSA | 25 March 2020 |
| Model years | 2020-2021 |
| Vehicles named | THOR MOTOR COACH AXIS, THOR MOTOR COACH CHATEAU, THOR MOTOR COACH FOUR WINDS, THOR MOTOR COACH QUANTUM, THOR MOTOR COACH VEGAS |
What the notice says today
The consequence
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.
The remedy
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.
What it said before
This campaign is in the register but not yet in the dated wording archive, so we cannot yet say whether its text has moved. It enters the archive on the next pass.
This is one of 816 notices in the record whose component field names power train. Across that group the median wait before owners were written to was 42 days.
Last checked . No change has been recorded in the wording.
The models named here, across their whole recall history
- Thor Motor Coach Axis recalls: 11 US campaigns
- Thor Motor Coach Chateau recalls: 26 US campaigns
- Thor Motor Coach Four Winds recalls: 30 US campaigns
- Thor Motor Coach Quantum recalls: 19 US campaigns
- Thor Motor Coach Vegas recalls: 12 US campaigns
How to cite this record
Quoting the wording on this page means quoting a version, so the date belongs in the citation:
CarsMultiverse, recall 20V178, wording as read on 16 September 2026. https://carsmultiverse.com/recall/20v178/
The cross-border matches used on this site are deposited as a citable dataset: doi:10.5281/zenodo.22087136. The recall wording itself is published by the national authority named above and is theirs, not ours.
The recall record and its wording are published by the US National Highway Traffic Safety Administration and are US Government public domain. The dated archive, the comparison and any before-and-after above are CarsMultiverse. How fresh every engine behind this page is, is public on the status page. To check a specific vehicle, use NHTSA’s own VIN lookup.
Other TMC notices we hold
- 25V792: 2024 Twist, 2023-2024 Dazzle, Scope, Rize, Sequence, and 2022-2024 Tellaro recreational
- 25V791: 2023-2024 Twist, Dazzle, 2023 Tranquility, Sanctuary, 2022-2024 Tellaro, Sequence, and 2024 Freedom Elite Van recreational
- 25V709: 2026 Geneva, 2025-2026 Quantum, Four Winds, Pasadena, Eddie Bauer, Chateau, Freedom Elite, and Coleman recreational
- 25V653: 2024-2025 Luminate and Indigo recreational
- 25V301: 2025-2026 TMC Outlaw motorhomes, equipped with a removable step assembly
- 25V097: 2023 Gemini and Compass motorhomes
- 24V666: 2024 Palladium and Talavera motorhomes
- 24V441: 2023-2024 Omni and Magnitude motorcoaches
All 109 TMC campaigns we hold · Every manufacturer in the record
The fingerprint of this notice
We take a SHA-256 of each of the three blocks of text the authority publishes and keep the first eight characters. As we last read campaign 20V178 on 23 August 2026, they were:
- Defect summary
2dad2aa5 - Consequence
91b9b798 - Remedy
c42e3392
We first read this notice on 21 August 2026. It has not moved since. If it ever does, these characters will not match, and the change will be dated here.
The wording we hold for 20V178 · how the whole register is watched
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