first off its an 02 HSE and im in california
I'll first start a couple months ago. Battery died on me so i got a new one at the dealer. Put in new battery and right after i put in the new batter

1) i cant alarm RR from remote
2) a/c stopped blowing cold air
3) nav stopped working
4) windows not set
5) radio worked but can't adjust volume up or down

i fixed the windows but nothing else

Just the other day, she would not start. I started getting gear box fault, abs fault, a clacking noise, and lights flashing, then all of a sudden i could arm my alarm from my remote so something went crazy. I took the battery in and had it tested = bad battery

Took the battery back to the dealer to get it xchanged with no problem. So now i go to pop my hood from inside and now the hood wont open. The left side of the hood pops up but not the right drivers side. The right side is shut closed and i dont want to tweak the hood. All im trying to do now is install this new battery and see what happens but i cant open my hood

suggestions please