I just brought a lease return 2017 4X4. Only 35k on it. When I bought it the end of June we were in a heatwave so I had the windows closed and the air on but one day in early August it cooled down and I had the windows open and heard a squeak from the front right suspension. I called Nissan. They asked I put white grease on where the hood gromets meet the body so I did and still the same sound. Called back a couple weeks later and made an appt. They said no charge. I went there and they wanted $135.00 to look at it but it rained the night before and the sound went away so I left as they said if they didn't find anything I would still have to pay. Anyone have any idea where this sound would be coming from. Its strange that it goes away when it rains but comes back the following day when its dry out. I did spray silicone spray on the bushing but the sound is still there. Any ideas would be greatly appreciated!