2000 BMW X5 Questions

Says it has a clean title but other than that there is no info on any issues.

Recently bought a new key for my car and now the new key nor the old doesn't work. I know it not my starter because I ran a Hotwire to it and it still crank but doesn't turn over. Kind of lost on what should I do any suggestions would be greatly appreciated

i tried using a 10mm socket, but it seems to big, and the 9mm is too small. am i missing something here?

The problem noted above happens constantly.

WHEN CRAKING IT JUST KEEP TURNING OVER AND OVER BUT NOT CRANKING AFTER SEVERAL TRYS IT FINALLY CRANKS. BUT SOME TIME I SMELL GAS WHEN I KEEP TRYING. wHAT COULD THIS BE?

a/c blows cold air from left dash vent but blows warmer as it goes to the passenger side.

I have lost my odometer reading and the screen where all the failure messages keep popping up. Also have a check engine light ABS & Brake msg. Yes my dash looks like a x-mas tree! But really need to get the odo back up. Is this an actual instrument cluster replacement or pixel repair