OK, I inherited a 1998 4door 2wd auto Rav4 from my mother in 2011, and I've been driving it ever since with zero problems, and Ive always maintained it well. Last year around April, I had to change the lgnition cylinder, i never had a factory key, only copies, and it finally broke so i switched it out, no problem. Fast forward to summer, and my battery would die when it rained... So it got to where if left to sit my battery would always die, so when i parked it, id simply unhook the negative cable. I knew there was some kind of electrical,drain but had no time (3jobs) to fool with it. One day at work, I attached the cable, turned the car over, it fired,and started, but nothing electrical worked, nothing. Then after about 3 seconds everything electrical came on at once, i didnt think too much of it. Also when it,rained i would get water in the floor pan driver side. So,a week later, i fire it up, and same,thing, nothing electrical, and i,start work at 4 am so had to,find a ride to work. Then the car sits for 6 months. Fast forward to now, i open the car to,find passenger and driver,floor,soaked, and tu can see water at the corner of the sill and the dash, i test the window seal, it has leaks, so i fixed that and am drying out the interior and the dash. I took out the alternator, had it,tested it works beautifully. Ok, so batterry is dead, but if you jump it, it will turn on, you get lights, starting beep, locks, but the signals, radio, heat/ac, windows, instrument panel do not work. Even when you step on the brake,the shifter will,not move from park unless you manually press the button, and i have checked all fuses. Please help me im at my wits end, and i have to,get this car back,on the road. Thanks!