I've finally able to fix the rattle I've been hearing both from the trunk and rear seats.
These are the areas which were generating the most rattle for me. Steps to fix:
Rear Seats
1: Middle seat - press the middle button to open middle seat, find electrical tape or any kind of tape and wrap around the metal pole several times to make it thicker. Push the middle seat back, it might take slightly more power but it'll snap back more solid (no more wobbling). This alleviated a lot of the middle cabin noise. I'm still trying to see what kind of material is best here, as the seats still make an annoying sound if you hit a big pothole (ie, the latch will make a sound)
2: Lean back both seats - press and hold both ends of the rear seats and push them back until a CLICK happens. Make sure a CLICK happens. There is an upright mode, and a leaned back mode, if you leave it in the middle inbetween (no click) the seat is basically free floating and creating sound.
Trunk
1: The 2 circles, the plastic of those literally are free floating on top of the metal. When you bump over a bump, the trunk literally slaps the plastic into the metal. I ended up putting some rolled up rubber tubing underneath the plastic (had it lying around), you can try a small sponge or any kind of filler material to stop the slap. Sound was much better.
2: There are two more rubber stops at the bottom of the trunk, increase the height of those as you see fit, the trunk should be snug once latched.
These fixes have made my Model Y whisper quiet, at least from a cabin point of view. The suspension can still be improved but that's $$$$ for another day.
These are the areas which were generating the most rattle for me. Steps to fix:
Rear Seats
1: Middle seat - press the middle button to open middle seat, find electrical tape or any kind of tape and wrap around the metal pole several times to make it thicker. Push the middle seat back, it might take slightly more power but it'll snap back more solid (no more wobbling). This alleviated a lot of the middle cabin noise. I'm still trying to see what kind of material is best here, as the seats still make an annoying sound if you hit a big pothole (ie, the latch will make a sound)
2: Lean back both seats - press and hold both ends of the rear seats and push them back until a CLICK happens. Make sure a CLICK happens. There is an upright mode, and a leaned back mode, if you leave it in the middle inbetween (no click) the seat is basically free floating and creating sound.
Trunk
1: The 2 circles, the plastic of those literally are free floating on top of the metal. When you bump over a bump, the trunk literally slaps the plastic into the metal. I ended up putting some rolled up rubber tubing underneath the plastic (had it lying around), you can try a small sponge or any kind of filler material to stop the slap. Sound was much better.
2: There are two more rubber stops at the bottom of the trunk, increase the height of those as you see fit, the trunk should be snug once latched.
These fixes have made my Model Y whisper quiet, at least from a cabin point of view. The suspension can still be improved but that's $$$$ for another day.