useless

the air valve on my left front tire broke and the tire was flat, then i repalce it with the spare AND THE TRANSMISSION DIDN'T GO OVER SECOND GEAR then i try to remove a back tire to put it in the front so the transmission problem go away BUT I WASN'T ABLE TO LIFT THE TIRE OFF THE GROUND, ONLY...

friends, last week when I cleaning a driver´s carpet, I saw a strange button bellow panel, near upper a break padal.... did anyone knows for what is??!? Attached are a picture....