i just got my 07 H2 a few weeks ago and i have came up with 2 problems that i need some help with.

1. I have this rattle in the passenger side door..When the wife touches either the handle or the plastic piece in the back...it stops the rattle...would anyone know what needs to be tightened up or what needs to be done..

2. when i press the reset button to see how much fuel i am using per 100km..Its going haywire...It goes from 40.7L/100km sometimes it will always give me different numbers...\

any help i can get would be apppreciated...