So, I went out to my truck yesterday morning and went to unlock it with the keyless fob and in addition to the the lights flashing twice to notify me that it is unlocked it also chirped twice. At first, I was skeptical and thought, "maybe it is a bird" so I locked it and it chirped once. I then unlocked it and got the double chirp. This was the first time it has ever done that in the 3 months that I have owned it and I specifically asked the previous owner if it had an audible signal and he said no, just the lights. Of course, it did not do it the rest of the day. Then this morning is happened again when I first went out to the truck, but not when I got to work and locked it. Is it suppose to do that and what might be the reason that it is all of a sudden starting to work, but only in the mornings? Is it messing with me??