This has been happening to my 2002 XG350 since i purchased it new. The\noriginal went dead 18 months and had to replaced with an "upgraded" one at\nthe dealer. This "upgrade" one lasted about another 18 months. Then I\npurchased a 0.00 Sears Diehard which died just short of 1 year. This\nSears battery being replaced was under warranty and didn't cost me any $$,\ndue to the 3 year warranty. The small electrical test they do on the system\nsaid all was well after the new battery was install.\n\nMy question is, what could be causing such a drain on the batterys I've had\nover the years and has anyone experienced this problem themselves?\nBatteries in my past cars have lasted anywhere from 3-5 years....and I think\nI got 6 years out of one once. There are also NO battery lights showing on\nthe dash. The battery light does go on at ignition lamp test, but goes out\nwithin a few seconds.\n\nThanx for any replies or ideas contibuted so I can take care of this\nsituation.\n\nSteve S.