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Thor Motor Coach Four Winds Recall 20V711: Water Can Enter Battery Relay, Risking Electrical Fire

NHTSA campaign 20V711, reported November 17, 2020, 1,074 vehicles potentially affected.

What this recall means for you

On certain 2020-2021 Thor Motor Coach motorhomes built on a Chevrolet chassis, the Battery Isolation Manager/Battery Isolation Relay (BIM/BIR) is not watertight when exposed to engine compartment heat. Water can get into the unit and cause electrical arcing.

Electrical arcing creates a risk of fire. Owners should watch for any open recall notice for their motorhome and contact Thor Motor Coach customer service at 1-877-855-2867, referencing recall RC000206. You can also check your VIN for open recalls.

The remedy is free: an authorized dealer will replace the BIM/BIR with a Trombetta solenoid at no cost to you.

Check whether this recall is open on your vehicle

The repair is normally free at an authorized dealer.

Official recall notice

Safety recall 20V711Thor Motor Coach
Component
ELECTRICAL SYSTEM
Problem
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.
Risk
Water may get into the BIM/BIR and create electrical arcing, increasing the risk of a fire.
Remedy
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.
Notes
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

Thor Motor Coach Daybreak20202021
Thor Motor Coach Four Winds2021
Thor Motor Coach Freedom Elite20202021
Thor Motor Coach Quantum2021
Thor Motor Coach Redundant Chateau20202021
Thor Motor Coach Redundant Four Winds2020
Thor Motor Coach Redundant Quantum2020