I've been having a "rattle" or "flutter" issue over the past couple months. It's been to 2 different dealerships for this issue, each dealership refusing to identify, diagnose and solve the issue. It's most noticeable when driving at slow speeds, accelerating, switching from V8-V4. The video attached is while I drive up my parking garage. The first segment is going up an incline and can be heard at :03. The second is level floor and can be heard at :19. I recorded the dash to include the RPMs and V8 / V4 flag indicator. The rattle / flutter is definitely associated with the V8-V4 switch. Any help would be greatly appreciated. I have MAYBE 2months left on my 3yr/36k warranty.
DJ
https://youtu.be/beSB3xuezKM