2004 Hyundai Elantra Logo
Posted on Jun 28, 2010
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I have a 2004 Hyundai elantra. When driving all my gauges turn off including my odometer and speedometer. My car loses power and the automatic trans. has trouble shifting. My battery completely dies, however if I let the car sit about 45 minutes the battery seems to charge up and the car starts. My alternator light never comes on. I have slow charged the battery overnight but same problem occurs while driving. Can this be the alternator or the battery heating up and losing it's charge?

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  • Posted on Jul 11, 2010
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I am having the same problem with my 2004 Elantra. I have had the alternator tested twice and did replace the battery. This morning I had it running ad put a volt meter on it ( red to the battery pos black to the engine block) I did get a reading of 14 volts for about 30 seconds then the idle lowered and the voltage dropped to 12 volts. I tried this again later but could not get a voltage reading above 12 volts with the motor running. Any suggestions?

  • tazman2563 Jan 16, 2011

    what was the outcome to your problem? Our daughters car (2004 Elantra) did the same thing this evening - we won't let her drive it but have no idea what is going on - help!!! :(

  • Ryan Delieto
    Ryan Delieto Dec 24, 2013

    i had the same problem with mine i went through like three alternators before i got one that worked properly my recomendation take it to the dealership and get a genuine part installed so that there is a one year parts and labor warranty on they will probably recomend that you change the battery as well. but the problem is the alternator

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