My 2011 G37X sedan recently got a problem. It has noticeable rattling noise at idle in drive. The noise is gone immediately after the car starts to move, and won't happen in reserve or park.
This noise definitely comes from the front side and is audible in the central cabin. Most likely, not from the bottom. I opened the hood today but couldn't figure out where it is from.
100% something is vibrating at idle in drive.
I searched this forum and some people had the same issue because of washer reservoir. I just checked it out and the plastic clip is in place and stable enough.

Any ideas? Thank you in advance!