What would cause the battery to drain when the car is not even running. It sits in the driveway, the stereo is off and there are no lights on.Sometimes when the car is hot the car does not start until in cools down.Could that be the alternator's solenoid?
My car has 160000 miles.
My car has an automatic transmission.
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Hello. There are many things that can cause a battery to drain even when the car is off. If any live wire on the vehicle, there are many, short to ground then they can complete a circuit that will place a parasitic drain on the battery. This will eventually result in a dead battery. I would carefully examine the vehicle’s wiring harness in the engine bay for any signs of damage that may be a potential cause of the issue. If everything in the engine bay appears to be fine then the issue may require a more in-depth diagnosis of the battery from a professional technician. In regards to your starting issue. It may be possible that the starter or starter solenoid are going bad. There are cases where the components will not function if they get too hot, but will work fine once they are cooled off. I would test the starter and solenoid to see if they are within spec and replace them if they are not.
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