The other day I parked the car on the street and was inside the restaurant 20ft away eating when I noticed about once a minute the lights on the car are turning on and staying on for about 30 seconds and turning back off again. Similarly, tonight I went to my garage to get something, and as soon as I opened the garage door I noticed the lights are on. Why does it do this? Is it because the fob is just not far away enough? This has to affect the battery right?