I have noticed on numerous occasions this summer, a crackling sound in lower portion of the front windshield. i actually remember hearing it last summer but it is now more audible. the warm weather must be a factor. i have also experienced problems with my keyless fob, it does not always work and my ignition an rear lift gate sometimes will operate even when the fob is within 3 feet. this has occurred several times over the past 2 months. i took it to nissan and they could not find the problem. i purchased the car brand new in aug. 2011. no accidents. updated 4/24/2015 *js