Tail Light Switch problems of the 2017 Tesla Model X

The contact owns a 2017 Tesla Model X. The contact stated that the rear tail lights on the trailer that was attached to the vehicle, failed to function as designed. To ensure that the failure was related to the vehicle and not trailer, the contact had the trailer attached to two separate friend's vehicles and the trailer lights worked on both vehicles. The manufacturer was notified of the failure but offered no assistance. The vehicle was not repaired. The failure mileage was 24,000.