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2004 Hyundai Elantra battery continues to die even after replaced and fully charged. It'll run fine for a week on new/fully charged battery and then after a week ill get in the car to go to work and the battery will be dead.

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  • Cars & Trucks Master
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Has someone tested the alternator to see if it is charging the battery ? ?

Posted on Apr 23, 2013

  • Kristin Apr 23, 2013

    The alternator tested good but we still replaced it anyways. With new alternator and new battery everything ran fine for a week then battery died again. Pulled the fuse to the radio just incase there was a draw there (which a lot of people seemed to think).. At this point I can't get it anywhere to be diagnosed so I'm lost.

  •  Stephen
    Stephen Apr 23, 2013

    You may have to borrow a battery charger, or jump it off another car. Once you get it running, you need to know if the alternator is charging the battery when the engine is running. Then go from there.

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sounds like alternator

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Posted on Jun 16, 2010

mywiring
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SOURCE: 2003 Hyundai Elantra alternator will not charge

If you have replaced the alternator and the battery has been checked and showed to be in good working condition then the only thing left is either a bad fusable link or cable (negative or psitive) going from battery to engine. You should inspect these cables and there connections. Corrosion on these connections can cause these problems. You also mention that the alternator will not keep car running. It should when you disconnect the negative battery cable while the engine is running.If all connections and cables are good and you haven't replaced alternator then you should do so.

Posted on Apr 28, 2010

  • 63 Answers

SOURCE: my battery continually dies. I've

do you have a remote start on the car, if you do it could be draining the battery, if not you have a wiring problem

Posted on Sep 02, 2011

enyeartricha
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SOURCE: 2004 elantra gt stalls and then restarts but will stall again

its the cam shaft or drive shaft sensor. since your probably trying to restart it over and over again you are resetting the computer so you get no codes. have a 2000 and it did the same thing tell i gave up trying to start it and took it towed it to my house and had it tested.

Posted on Apr 14, 2012

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1 Answer

Hyundai Elantra keeps dying despite my electronics being off.


Does the car crank slowly, or the starter clicks when you attempt to start it? If the alternator or voltage regulator is bad, the battery would continue to lose energy and appear to be bad. Alternators need to be fed voltage since they don't have magnets to excite the windings. On my Volvo, sometimes the indicator lights don't come on when I turn the ignition on, before actually cranking the engine. When this happens, I know from experience that the battery won't charge. Do you get any dash lights showing a problem?

You can check the voltage at the battery when the engine is running; it should be well over 12 volts if charging.

If a trunk, glove compartment or interior light is on, that can run the battery down too.

Nov 02, 2015 | 2004 Hyundai Elantra

1 Answer

2004 elantra battery died when new battery was installed it was hooked up backwards now the car will not charge i have replaced alternator what else is wrong


Fusible Links if your lucky

I fail to see how most battery cables even reach
far enough to hook up wrong!

I hope you tested the old alternator & and are not just
throwing parts at it.

Can you admit you need professional help?
At least go to a shop & ask the question

Aug 28, 2013 | Hyundai Motor 2003 Elantra

1 Answer

2003 Elantra-Car ran fine until my son's door was not complelety shut and battery died, jumped car, but once the jumper cables were removed the car dies. Thinking it was an electrical issue, check


some alternators need battery voltage to stay running and after killing a battery if may not recover and you will need to replace it then i would check the fuses its posible that when first jumped the cable where on backwards

Aug 07, 2012 | Hyundai Motor 2003 Elantra

1 Answer

My 2004 hyundai elantra just started dying out of no where sometimes it runs just fine sometimes it just jerks like its going to die and sometimes it actually dies not sure whats goin on???


My friend had this problem with her Hyundai 2003 Sante Fe...just dying out. And I did some research for her. There was one particular forum, where I Googled the make and model, year of the vehicle that came up where a few people had this problem. And the problem isn't picked up by the dearler's computer test. The part was the EGR solenoid control valve. Maybe that's a place to start?

May 08, 2012 | 2004 Hyundai Elantra

1 Answer

Two new alternators on and the car still will not charge and it kills alternator. Need to know what to look for in the wiring harness. Auto Zone tested alternators before installation. Still won't...


Go to web site WWW.HMASERVICE.COM and register your vehicle by VIN #. You'll then have access to shop manuals, wiring diagrams, technical service bulletins, illustrations, etc.
Provided there is no problem with the vehicle's wiring, find out what the charging current is to the battery. I've seen batteries which TEST good, but when under a CHARGE short out internally.
Example: Tested a battery & charging system on a Hyundai Elantra, the battery tested "Healthy" but indicated there was a CHARGING SYSTEM PROBLEM. I checked the battery voltage while the engine was running and found the battery voltage at 14.3 VDC (which was normal). I then used a Digital DC Clamp meter arount the positive (+) battery cable & found the battery was charging at 70 Amps!.. it was supposidly already fully charged (should have only been taking 4 to 6 amps when fully charged).

Best guess without looking/diagnosing the vehicle myself

Maybe this will help.

Jun 30, 2011 | Hyundai Elantra Cars & Trucks

3 Answers

Replaced alternator and battery. Battery light continues to stay on-- battery will not hold charge. Fuse was checked and is ok.


Go to the battery positive terminal is ther a 30 or 40 amp fuse you ll have to visually inspect to see if its open, you also need to look in power junction box and look at the big green fuses some orange and some red the big ones not the small one, check to see if any are open more than likely the fuse are open

May 06, 2011 | 2004 Hyundai Elantra

1 Answer

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,...


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?

Jun 28, 2010 | 2004 Hyundai Elantra

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