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Toyota Prius Hybrid System Questions



  • I have a 2002 prius and have 73500 miles without any big problems. Had regular maintenance, replaced tires twice and last year had fuel injection service. Have asked the dealer in 2010 & 2011 to check the battery (big) as the engine runs 5 to 6 minutes before stopping. They said the battery was fine but it still continues to run which it never did before. At the end of last year I was out of town for 6 weeks and as the car had only been driven once a week the small battery had to be replaced in January 2012. This mechanic also did the fuel injection service and told me again that the problem of the car running might be due to the big battery as it takes longer to charge as the battery runs down. If the battery has a 10 year warranty, it will run out in March. What can I do to insure that I don't have replace the battery soon after the warranty runs out? I love my car and as I don't drive many miles, I would love to keep it but I don't want to keep a 10 year old car if I have to spend 3K and worry about a lot of repairs.
  • No, it turns out it was the battery being defective. But now, if we forget and leave the dome light on in back by the morning the battery is flat. I mean, how many amps does a little light have anyway? This is silly. If I had a flashlight with a couple of D cells those dinky batteries wouldn't run down overnight unless it was a very bright beam. This whole thing with not being able to start this car has turned me very much negative about Prius. I also have a 2003 Tundra, and if I don't drive it for a week or so it will have a flat battery. Seems the computer in the engine is running and sucking juice out of the battery. Ridiculous, especially in the Prius where you have a godawful mess of batteries, and leaving a dome light on overnight kills the car??
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