found a thread about high pitch noise a few owners are experencing but its closed,hope im not stepping on any toes here,but i have a slight buzz,took it to my dealer ,had service mgr ride and confirm metalliac buzz noise,they couldnt find it so called nissan hq they are aware of it ,think its a ecu.they will notify me when fix comes,mine isnt very loud "radio can mask it" but its there and i want it fixed