Problem started over the summer. We replaced the batteries in the keys but one set constantly set off the windows and lights. We had to hide that set of keys in the bedroom. Now the other set is starting to do the same thing. Can't understand it because the keys do not lower or raise the windows but we have them up and all of a sudden at night the headlights go on, the windows go down. Noticed the car engine was sluggish a few times turning over. We had a new battery put in the car. Can't figure it out.