Yesterday I went to leave and as I was still in house I hit the remote start twice as always. When I entered the garage and opened the door the truck was not running, not completely unusual due to distance and number of walls, not concerned i hit it the remote start again, waited for a few seconds and the truck started. I then put my fob in my pocket, I wil come back to this point. When I opened to door the radio came on but when I sat down the dash screen read Key FOB not recognized insert key fob. I have a push buttonstart. When I put my foot on the break and hit the start button nothing happened, my seat did not move into position and I could not shift out of park. Seatbelt was on. After two or three attempts the horn started blowing intermittently approximately 1 second on, two seconds off. By this time my frustration level rising fast (these trucks have an incredibly loud horn) I must have hit the panic button which increased the frequency of horn. After a couple of minutes the horn stopped and I called a friend who said maybe my fob battery was weak, I retrieved my second fob but since the truck was purchased in August I have a hard time accepting the battery as being weak. Now, let’s go back to me placing my FOB in my pocket. I carry a small magnetic wallet that holds my bills with a magnetic clip and in the three slots I keep my cards in a protective card holder that prevents the numbers from being read while in my pocket. IF my fob went behind my wallet could it be possible the signal was blocked and my truck didn’t recognize it. I normally wear my fob on the outside of my pants on a hook.