The contact owns a 2018 Nissan Sentra. The contact stated that upon taking the vehicle to an independent mechanic for service, the mechanic diagnosed a failure with the brake light switch. The vehicle was repaired. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 21V135000 (Exterior Lighting). The VIN was included, but the vehicle was already repaired under the recall. The manufacturer was not notified of the failure. The failure mileage was 66,000.