weird noise around the gas Fuel tank!
Today and three times in the past year, after I shut off the engine and leave the car (2015 RC350) for a while (today, I returned t the car after a couple of hours), a weird noise comes from a location near the gas tank. The sound is as if a motor/pump is running (more like "buzzing"). Each time, when I opened the fuel cap, a sound of pressure release is heard and then that noise stops.
Has anyone of you experienced this? Is there a vent line that could be plugged? Any hint?
Thank you in Advance!