2018 Thor Motor Coach Palazzo problems: recalls, complaints and what to check
NHTSA has 3 recalls and 12 owner complaints on file for the 2018 Thor Motor Coach Palazzo. Here is what they are, what a technician checks for each kind of fault, and how to look one over before you buy it.
Other: 1 recall, 10 complaints
Recall 23V113000 (23/02/2023): EQUIPMENT:RECREATIONAL VEHICLE/TRAILER
Thor Motor Coach (TMC) is recalling certain 2015-2023 Palazzo recreational vehicles. The front lower cap brackets that support the front fiberglass panel may become loose and detach from the vehicle while in motion.
Fix: Dealers will inspect and replace the front lower brackets, as necessary, free of charge. Owner notification letters were mailed March 15, 2023. Owners may contact TMC customer service at 1-877-855-2867. TMC's number for this recall is RC000291.
Axles, brakes, suspension and hitch: 1 recall
Recall 20V418000 (20/07/2020): EXTERIOR LIGHTING:BRAKE LIGHTS
Thor Motor Coach (TMC) is recalling certain 2017-2020 Aria, Venetian and Tuscany, 2017 Tuscany XTE and 2017-2019 Palazzo motorhomes vehicles that received an inspection-only remedy for recall 18V-763. The rear mounted Power Distribution Module (PDM) may have been damaged during manufacturing, possibly resulting in the rear marker lights, brake lights, or turn signals not functioning.
Fix: TMC will notify owners, and Daimler Trucks dealers will replace the PDM, free of charge. Owner letters were mailed October 6, 2021. Owners may contact TMC customer service at 1-877-855-2867. TMC's number for this recall is RC000196.
What a tech checks: Bearings, brake magnets, worn shackle bolts and bent axles. A trailer that wears tires on the inside edge or pulls to one side usually has an axle or suspension problem. Before you buy: Bolts tight, springs not flat, brakes apply with the breakaway pin pulled.
Chassis and towing lessons · Trailer guide
Tires: 1 recall
Recall 20V559000 (15/09/2020): TIRES:VALVE
Thor Motor Coach (TMC) is recalling certain 2018-2021 Aria, Palazzo, Tuscany, and Venetian motorhomes built on a Daimler Trucks (DTNA) chassis. The tire valve stem extension for the inner wheel may contact the outer wheel rim opening and become damaged.
Fix: TMC will notify owners, and DTNA dealers will inspect the inner wheel valve stem stabilizers, and adjust as needed and/or replace the inner valve stem, free of charge. The recall began November 2, 2020. Owners may contact TMC customer service at 1-800-524-5210 extension 104 or DTNA customer service at 1-800-547-0712. TMC's number for this recall is RC000204. DTNA's number for this recall is FL-861.
What a tech checks: Age, load range and pressure. RV tires age out before they wear out, and an underrated tire on a heavy trailer is a blowout waiting to happen. Before you buy: Read the DOT date and the load range on the sidewall.
Chassis, towing and tires lessons · Trailer guide
Doors, windows, steps and lights: 5 complaints
What a tech checks: Mostly adjustments and wear: steps that stop halfway on a bad switch, doors out of alignment after a slide shifted, exterior lights with a corroded ground. Before you buy: Every door, lock, window and light.
Structure, roof and leaks: 3 complaints
What a tech checks: Roof sealant, seams, window and slide seals, and the frame. Water intrusion shows up as delamination, soft floors and stained ceilings months after the leak started. Before you buy: Press the sidewalls and walk the floor; look at every seam and seal.
Roof, leaks and body lessons · Seals and leaks guide
What owners reported to NHTSA
12/29/2019, STRUCTURE,EQUIPMENT: THE FRONT CABINET ABOVE THE FRONT DASH INCLUDING THE STEERING WHEEL AND OTHER OPERATOR CONTROLS DETACHED FROM THE CEILING AND BEGAN FALLING DOWN. THIS OCCURRED WHILE THE RV WAS IN MOTION. HAD IT COMPLETELY DETACHED CONTROL OF THE RV WOULD HAVE BEEN LOST. THE SCREWS HOLDING THE CABINET FRONT PULLED OUT OF THE WHERE THEY WERE SCREWED IN ALLOWING THE FRONT OF THE CABINET TO FALL.*DT THE CONSUMER PROVIDED PHOTOS. *TR
11/09/2023, UNKNOWN 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.
11/08/2024, VISIBILITY,UNKNOWN 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.
08/18/2023, UNKNOWN OR OTHER,STRUCTURE: 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 didn’t fall off, I bought new seala
07/04/2024, STRUCTURE: 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 m
07/02/2025, VISIBILITY,EQUIPMENT,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
Looking at a 2018 Thor Motor Coach Palazzo?
The Buyer's Check walks you through it on your phone: what to ask, the outside walk-around, water damage, every system on every power source, with the recalls above built in. You get a report that says what's a walk-away and what to negotiate on.
Checked against NHTSA 2026-10-23. Recall repairs are free at an authorized dealer. Complaints are owner reports to NHTSA and are not verified.