2020–2021 Thor Motor Coach Daybreak, 2021 Thor Motor Coach Four Winds, 2020–2021 Thor Motor Coach Freedom Elite and 4 other models Recall: BIM (Battery Isolation Manager)/BIR (Battery Isolation Relay) is not…
NHTSA campaign 20V711000 · Electrical System · filed Nov 17, 2020 · verified Jul 30, 2026
The defect
Thor Motor Coach (TMC) is recalling certain 2020-2021 Daybreak, Four Winds, Chateau, Freedom Elite, Quantum motorhomes built on a Chevrolet chassis. The BIM (Battery Isolation Manager)/BIR (Battery Isolation Relay) is not watertight when exposed to engine compartment heat.
The risk
Water may get into the BIM/BIR and create electrical arcing, increasing the risk of a fire.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →The fix — what to do
TMC will notify owners, and dealers will replace the BIM/BIR with a Trombetta solenoid, free of charge. The recall began January 13, 2021. Owners may contact TMC customer service at 1-877-855-2867. TMC's number for this recall is RC000206.
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
Affected vehicles
Related recalls
More Thor Motor Coach Daybreak recalls
- 2020–2021 Thor Motor Coach Daybreak and 3 other models — Bolts of the wrong size were used to secure the barrel…
- 2020 Thor Motor Coach Chateau Citation and 13 other models — Wiring harnesses for the front seats may have been routed…
- 2021 Thor Motor Coach Chateau and 4 other models — Battery cable may not have been properly secured within the…
- 2020 Thor Motor Coach Chateau and 11 other models — Rear part of the fender liner on the front axle may contact…
- 2020 Thor Motor Coach Chateau and 13 other models — Owner's manual does not correctly specify the certain…
Other campaigns involving Thor Motor Coach vehicles
- 2023–2024 Thor Motor Coach Dazzle and 7 other models — Solar panel mounting brackets may become loose or break…
- 2023–2024 Thor Motor Coach Dazzle and 5 other models — Adhesive securing the solar panels to the roof may fail…
- 2025–2026 Thor Motor Coach Chateau and 7 other models — A P-clamp may not have been installed, allowing the Liquid…
All Thor Motor Coach Daybreak recalls → · All Thor Motor Coach recalls →
Source: NHTSA recall database, campaign 20V711000 (manufacturer number RC000206). Data last verified Jul 30, 2026.