Hi , I have got a 2005 4.4 V8 and has started giving problems with the alarm .Every known again I will push the key fob to lock it peeps , flashes and is locked but when I return to unlock I push the key fobs unlock I get no beeb or flash only the front two doors open , then if I try start it the alarm goes off , so push lock / unlock a couple of times on the key fob till it beeps again , then alarm stops and starts.Would any one know where to start looking for the cause ?