I was having trouble last week getting my car to start, I'd turn the key and hear only a click. I thought it was my battery or alternator, and after i jump started it, it was OK. Took took the car to the mechanic and he tested the battery and alternator, everything checked out OK, plus the alternator and battery are only 1 yr old. The only thing he found was the negative terminal was loose so, he replaced the OE Toyota one with a nice brass one, and all was good for a week. All of a sudden tonight I get into the car, the interior lights are on and look strong, I turn the key, i hear one click and everything is dead, all the lights go off. I jumped it, all the lights turn on, but still the nothing, won't crank, just a faint click. All the dash lights were on, the stereo would turn on but no crank. I tried again without the jumper cables hooked up and again heard a click and all the interior lights went off, like the battery lost all its power in a second. I have a feeling it might be the starter solenoid but, i'm not sure. Sorry for the long post, but it's a very odd problem...i'm probably gonna have to have it towed as it won't start. Any help would be appeciated!!!!!!!