My 2002 Toyota Camry runs and starts fine except if I go away for a few weeks, the car battery is completely dead when I return. First time, I replaced the battery. Second time, I took it into the dealer who checked the electricals said it was fine and that I had tightened the battery terminals well enough. Now it's happened again.
Question: will the clock and security system light drain a battery in
3 weeks? Should I disconnect the battery if I go away?