I have a new to me 2009 Wrangler. Today the car alarm went crazy. We listened to the end of a song with the car turned off. When we opened the door, the alam went off. Pushing the unlock button on the fob and turning the ignition to on did not stop the alarm. It stopped after 3 minutes. Then when we went to exit the jeep, it went off again. After 3 minutes, it finally let us get out without sounding the alarm. After about 10 minutes, we got in and drove for about 20 minutes. We got out without delay this time, and the alarm went off again. It did not stop for 3 minutes. After driving it for over an hour, I have not had the problem again. Any suggestions?