*Median odometer reading when the problem happened, where owners gave one. One complaint can name several problem areas.
Unknown or other
The Thor motorhome has several windows. The windows they installed are laminated windows, with two panes of glass and a seal or glue which connects the outer glass to the inner glass. The attachment method for the outer glass is ineffective. As a result, the outer glass pane comes loose from the inner and is prone to fall off or fly off at highway speeds. The risk is that the pane could strike another vehicle and possibly cause an accident. Already Thor has replaced two of the window units on this unit around 2021, not under warranty but as a customer courtesy. I now have a third window unit that is experiencing the same problem. It is apparent to me Thor has acknowledged there is a risk…
Jun 27, 2025Unknown or other
MY 2018 THOR PALAZZO DRIVERSIDE AND PASSENGER SIDE WINDOWS HAVE FOGGED UP TO WHERE IT IS VERY HARD TO SEE OUT OF AND HAS BECOME A SAFETY CONCERN.
Jun 3, 2024Structure › Body
Hello NTSB, the frameless windows Thor used on my rv are all failing.. basically the adhesive used to glue the bottom rail onto the glass keeps failing. This week I had two windows fail. The top bunk window, and the emergency exit window. Both window (at separate times) failed while driving. Lucky I saw them break loose and my wife was able to grab the window before it flew off on the freeway and possibly caused a major accident or injury with flying glass at freeway speed. Again this is the 4th window failure in the last 3 years. All with the Same problem. Last summer I had the same problem with the bottom bunk window, however that window flew off somewhere in New Mexico. Unfortunately I…
Jun 30, 2024Unknown or other
The LP gas line running to the rear mounted water heater started leaking and when removed you see where the hose was burned due to faulty engineering of hanger supports or improper installation. I have the current hose and have pictures of the engine compartment and the burned hose. No insurance claim or manufacturer contact was initiated. If you were to drive with the LP system energized and fire or explosion could occur with propane leaking into the engine compartment. The LP leak system did not detect the leak as it is located in the living area by the stove. A secondary sensor in now being installed in the sleeping area which is right next to the area where the hose was installed. The…
Jun 5, 2024Unknown or other
Recall 21-E-047 was a recall on HERH window assemblies. The window adhesion is faulty and causes the window to separate from the vent bracket. I experienced this with my Palazzo. While traveling this last weekend a window broke free and came close to smashing into the car behind me. An absolute nightmare. Not only a major distraction to the RV driver but a potential fatal hazard if the window smashes into a trailing drivers windshield. I contacted lippert and sent photos and VIN. I was advised my coach VIN didn't fit within the VIN sequence they identified. Therefore they take no responsibility for the faulty part. This seems erroneous. If I supply the same evidence of the issue prompting…
Apr 26, 2024Visibility
The contact owns a 2018 Thor Palazzo. The contact stated that while driving at an undisclosed speed, through the sideview mirror, he observed movement of the driver's side awning window, prompting him to pull to the shoulder of the roadway. After a visual inspection, he observed that the glass panel within the awning window was detached. No warning lights were illuminated. The vehicle was not taken to the dealer or an independent mechanic. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 20V339000 (Visibility), but the VIN was not included. The manufacturer was notified of the failure but provided no assistance. The manufacturer was notified of the…
Apr 15, 2021 · 15,000 milesUnknown or other
The rear emergency exit window fell off during travel. Being a large motorhome I do not know where or when it happened and was noticed upon arrival at home. It is likely it came detached in traffic. I do have the make or model of the window but the Thor DAX # is 0273323.
Nov 8, 2023Unknown or other
The coach windows on the RV keep failing. Last year I had two windows fail on my drive to Wyoming. The sealant that hold the window bracket comes detached from the glass widow. When that happens the window flaps is the wind and if the window swing higher than 45 degrees, the window can slide off the top rail, and become a projectile for anyone traveling behind me. Since my windows didnât fall off, I bought new sealant and reattached the rails back to my glass. Those two windows have been good since. Then this summer I lost and different body window (lower bunk). But this time, the window just flew off without me noticing. I sure hope it didnât cause an accident or injury anyone. Lippert…
Jun 16, 2023
Owner complaints are submitted to NHTSA by the public and are not verified. Shown as filed (NHTSA removes personal details); long reports are shortened.