THOR MOTOR COACH Complaints

The primary issue involves the large, full-wall slide-out system on our motorhome. Since new, the front portion of the slide has shifted outward during travel, even while fully retracted. This led to the slide binding and becoming inoperable. The manufacturer attempted to fix the issue twice at their factory service center. Their most recent solution involved providing a makeshift brace—essentially a stick—intended to wedge the front of the slide in place during transit. Since then, the issue has progressed. The rear of the slide is now also moving outward during travel, causing the front brace to fall out. As a result, the front shifts again, and the slide continues to bind. This presents a serious safety risk. The slide can extend beyond the vehicle’s sidewall while in motion, increasing the chance of contact with nearby vehicles or objects. It also poses a structural integrity concern and could prevent safe egress in an emergency. There are no warning lights or error messages. The problem has been present since delivery, and has been inspected and documented by the manufacturer, but remains unresolved. The component is available for inspection upon request. This is a recurring and worsening failure affecting safety and basic function. Reports from other owners suggest this may be a broader design or manufacturing defect.

Lippert tow hitch (part#360231) Failure - hitch is known to shear off of rig when towing.

Overhead Cabinets above the driver and passenger seats above the front windshield have dropped down and bounces as we drive down the highway. Yes, it is available for inspection, I also have pictures. This started in 2019, the left side of the cabinets coming loose. We have tried unsuccessfully to fix the problem ourselves. After much research on the internet, I see where there was a RECALL 23v-121 & 2023-095 for Thor MC 2018-2021 Hurricane & Windsport. TMC recall # is RC000290. WE would like to be added to that recall and have our unit fixed properly before there is an accident. No one has inspected it yet, and no warning lights for failure.

Fumes inside motorhome when running Motorcoach overhead air conditioner on Generator power with vehicle engine off. I became irritable, felt ill and my eyes were swollen. It required a day to feel normal again. Due to this problem, I did not run both devices together again for the remainder of my 11 day trip. I will take it into the dealer this week for analysis.

NHTSA has previously issued a recall on the failed LP hose on Rise/Scope vehicles 21V-755. For some reason, my vehicle/VIN was not included in the recall. Nevertheless, I experienced the identical failure described in the recall, but I take exception to the recall pointing to the tight bend in the hose being the issue. My hose is literally disintegrating for the full length of the hose. It appears that the rubber is defective. My vehicle had about 7500 miles on it and hadn't been driven in bad weather when I experienced the leak. Photos are attached. I think NHTSA should revisit this recall and ensure that it is expanded to include all vehicles that might have this part, plus not blame the issue on the hose bend. I kept the hose and can send it for evaluation if needed. For the record, my hose leaked catastrophically when I switched on the gas, and if an ignition source was nearby, a fire certainly could have resulted from this failure.

The contact owns a 2023 Thor Motor Coach Gemini. The contact stated that the wire connecting the solenoid to the generator was burned. The solenoid was making a cranking sound while turned off. The contact stated that the head bolts had fractured and detached on the side awning rails on both sides. The skylight window was leaking water into the cabin of the camper. The contact stated that there was a warning informing the contact that the motorhome was due for an oil change that occurred earlier than expected. The contact received notification of NHTSA Campaign Number: 25V097000 (Structure, Equipment); but had not taken the motorhome to the dealer to be repaired under the recall. The dealer was contacted, and warranty coverage was discussed; however, there were no final decisions made. The motorhome was not diagnosed or repaired. The manufacturer was made aware of the failure and referred the contact to the dealer. The failure mileage was approximately 1,478.

2022 Thor Outlaw. RV had a whopping 3400 miles on it. We were driving from San Diego to Seattle. Three of our front left windows delaminated from the sealant that holds the window to the window controller. Lucky for us they didn't depart the coach. We had to tape them in place for the remainder of the ride. Could have made a serious problem for cars in the other lane if the window departed. There is already a recall out for this, it is RC000232. It doesn't cover newer models, but the manufacturer has not addressed the problem. This could have been a serious situation.

The left front fender skirt came off while driving at highway speeds. This is a piece of exterior trim. This could create a road hazard for others, increasing the risk of a crash.

This brake controller seems to apply full brakes regardless of the settings within the app. I have reinstalled it several times as directed by the manufacturere and each time I get on the road and just barely touch the brakes it locks the trailer brakes. This is dangerous since there is no way to test the system without driving.

The secondary alternator has failed twice within 9mons. With the second failure the drive belt shredded causing the engine cooling system to stop working.