The contact owns a 2015 Cadillac SRX. The contact was informed by a neighbor that the driver’s side headlight was dim. The contact stated that while driving at undisclosed speeds, the headlights failed to provide adequate lighting. The contact drove the vehicle with the high-beam headlights. There were no warning lights illuminated. The vehicle was taken to an independent mechanic who changed the light bulbs, but the failure recurred. The mechanic informed the contact that a headlight assembly replacement was needed. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 32,000.