I have a 2009 Sienna that I've had for 3 months and has about 59K miles on it. This past week it has had trouble starting, had to be jumped once, then ran fine for a couple of days, then today it left me stranded for the second time. A tow truck driver came out and said that the battery was dead, but was fine after being charged. The funny thing that it has done about 5 times this week is when I turn the key to the "start" position and I realize that it isn't going to start, I let go and it keeps trying to turn over. I have to actually take the key out to get it to stop trying to start. I've had a lot of vehicles and this is my 4th Toyota, and I've never encountered this. The tow truck driver tested my starter, battery, and alternator and said they were all fine. Does anybody have any clue what could be wrong?