RECALLS — THOR MOTOR COACH ARIA
Thor Motor Coach Aria recalls
Thor Motor Coach Aria model years 2017–2020 covered by at least one recall campaign. Pick a year to see the Canadian and U.S. campaigns side by side.
Choose a model year
U.S. NHTSA campaigns are listed on each year page, where they are queried live by model year. The Canadian list below covers every year together.
Transport Canada recalls
04- Structure#2021499
14 units affected
Issue: On certain motorhomes equipped with frameless windows, the adhesive that attaches the vented portion of the windows may fail. If this happens, the glass could separate and fall from the motorhome. Safety Risk: A window that detaches from the motorhome could create a road hazard for others and increase the risk of a crash. Corrective Action: Thor Motor Coach will notify owners by mail and instruct you to bring your motorhome to an authorized dealer or service center to inspect and replace the vent window glass, as required.
- Lights And Instruments#2020330
87 units affected
Issue: Certain motorhomes built on a Freightliner chassis could have a problem with the rear-mounted Power Distribution Module (PDM). This could cause the tail lights not to work properly. Note: This is an expansion of recall 2018-596. Vehicles that had an inspection, but did not have the PDM replaced under the previous recall, require a second repair under this recall. Safety Risk: Brake lights or turn signals that do not work could cause a following driver not to recognize that a vehicle ahead is braking or intends to turn. This could increase the risk of a crash. Corrective Actions: Thor Motor Coach will notify owners by mail and instruct them to take their motorhome to a Daimler Trucks North America (DTNA) authorized service facility to replace the PDM.
- Brakes#2018403
7 units affected
On certain vehicles equipped with air disc brakes, the brake caliper mounting bolts may be incorrectly torqued. This could result in the caliper bolts loosening, which could lead to the caliper detaching. Insufficiently torqued fasteners may not provide adequate clamping force between the brake caliper and brake anchor plate potentially resulting in reduced brake effectiveness, which would result in increased stopping distances, increasing the risk of a crash causing injury and/or damage to property. Correction: Daimler Trucks of North America Service Facilities will inspect the bolts, and repair as necessary.
- Accessories#2017613
6,579 units affected
On certain motorhomes equipped with Kidde fire extinguishers with black plastic handles and valves, the fire extinguishers may become clogged or require excessive force to activate. Also, the nozzle may detach from the valve assembly with enough force that it could cause injury, and fail to discharge. In case of fire, failure of the extinguisher to function could result in injury and/or property damage. Correction: Owners will be provided with instructions on how to inspect the fire extinguisher to see if it is recalled. Replacement fire extinguishers will be supplied by Kidde directly. Note: For more information about recalled fire extinguishers, please visit <a href="https://inmarmarketaction.com/kidde/Kidde284CA/">www.kidde.com</a>.
Canadian data updated August 24, 2026
Does this recall apply to my vehicle?
Matched by make, model, and model year. Many recalls affect only specific VIN ranges — confirm with your dealer using your full VIN.
What to do
Recall repairs are free at a franchised dealer in both countries. To confirm a recall applies to your specific vehicle, contact your manufacturer or dealer with your full VIN, or use the official channel:
- NHTSA recall lookup (search by VIN) — U.S. National Highway Traffic Safety Administration
- Defects and recalls database — Transport Canada