Picked up a Coolant system pressure tester and a gallon of coolant because there is a slow leak somewhere in the system. Otherwise filled her up $2.92 premium and got her washed.
Had that problem several months ago. Was carpooling to work, so my car was at a friend's. Had to haul ass back home cause the alarm was going on and off by itself. Did it randomly, so I just pulled the connector for the alarm horn.