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2021 Thor Motor Coach ACE

Problems, recalls and owner-reported issues

Electrical system is the leading concern among 3 owner complaints filed for this model year. This is the 5th highest complaint count among 8 ACE model years with reports.

Complaints by model year
  6. 3
Primary concernElectrical system2 reports · 67% of complaints
Owner complaints3Filed with NHTSA
Recall relationship1 safety recallNHTSA campaign records

What owners report most often

  1. Electrical system2
  2. Engine1
  3. Power train1
  4. Suspension1
  5. Vehicle speed control1

Recalls and investigations

  1. Visibility, glass, side/rearJun 9, 2020

    Thor Motor Coach (TMC) is recalling certain 2020-2021 ACE, 2021 Four Winds and 2020 Gemini, Axis, Compass, Delano, Windsport, Hurricane, Outlaw, and Vegas motorhomes. The adhesive bond between the glass and the metal hinge frame of the frameless windows may fail which would then allow the glass to detach and fall out.

    If the window glass detaches while the vehicle is moving it could become a projectile, increasing the risk of a crash.

    TMC will notify owners, and dealers will inspect the frameless windows for proper adhesive bond strength, replacing the windows as necessary, free of charge. The recall began July 10, 2020. Owners may contact TMC customer service at 1-877-855-2867. TMC's number for this recall is RC000192.

    Campaign 20V339000 on NHTSA.gov

Representative owner complaints: electrical system

2 reports, newest first. Show all

  1. Electrical system, Jul 8, 2024

    Air conditioner compressor wouldn't engage in rv. Called a mobile technician. Mobile technician found burnt and melted connectors on the control board. Technician stated the connectors used for 120v power were 12v crimp connectors and had burned and melted from the amperage. Technician stated that these used connectors were illegal to use for 120v. This is a safety concern and could result in a fire. Stated we were lucky the control board melted and didn't result in a fire and burn down the coach.

  2. Electrical system, Vehicle speed control, Engine, Oct 28, 2021

    Returning home from trip, route US I26 in NC, heading down 6 degree hill lost all speed control. The following dash lights came on: ABS, Engine Service, the Wrench, anti sway control. We were able to roll to the side of the road just before an entrance ramp. There was no acceleration control.