I got this suv about a year ago from a reputable used car dealership. About a month after I bought it, for some reason the alarm started going off and the thing was telling me "gate ajar" so the gate door is apparently open but it never is and this happens at least once a month. I have to lock every door by hand, otherwise the alarm goes off. And it almost always goes off when I'm just about to fall asleep. I googled the issue and it is common with the vehicle and there were suggestions to replace the battery but I trust the car experts here more than a google expert. Any other suggestions other than taking it to a shop because I can't afford that at this very moment...?