hi I'm Amarissa. I drive a 2015 optima.

amarissa

Newbie
Points
1
Location
wichita
Car
2015 optima
sometimes, after being parked and turned off, the car is totally dead. soon after (1 hour to 10 hours), everything works normally. we have replaced the battery twice, both times they said the battery was good; replaced all fob batteries. anybody else have or had this problem. help
 
Is the battery draining and going flat?

I would first of all suspect the alternator not providing enough charge, this can be checked with a volt meter and it should sit around 13V with the engine running.

Next up I would investigate parasitic drain, there is probably something causing a battery drain.

Is the car just randomly dead and not working from time to time?

Does this include the lights radio etc, or just the engine starting circuits?
 
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I like the sound of this project, we love diversity and respect ALL car projects.

Intercooler upgrades will be worth thinking about for this.

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Keep reading the articles on our site and this forum... you'll pick up loads of good common sense tips and don't be afraid to post questions, we're all here to share our knowledge and experience.

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