Both my audi Q5 and my roommate's Q5 mysteriously opened their trunk for a few times when parked close to our home. now I dare not park it very close to our hom

Both my audi Q5 and my roommate's Q5 mysteriously opened their trunk for a few times when parked close to our home. now I dare not park it very close to our home, assuming the issue is from the key fob.