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2003 KIA SORENTO Parasitic battery drain. No problems at first, but now it will not hold charge even overnight. Battery new and holds charge when not installed. Also eats headlights. Changing them every 2 to 3 months. Hazard flasher went nuts about 2 weeks ago, so I charged battery again and it held I drove it about 2 days after. Since then, it's back to a dead battery and needs to be jumped whenever I need to use the vehicle. Any ideas?
 

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Location & vehicle !!!!!

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Not sure what you mean by this, but I tried.
 

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99 Kia Elan 1.8L, 17 Ford Edge Sport 2.7L V6, 15 Mustang 3.7L V6, 08 Harley Nightrain
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Super Moderator
99 Kia Elan 1.8L, 17 Ford Edge Sport 2.7L V6, 15 Mustang 3.7L V6, 08 Harley Nightrain
Joined
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10,844 Posts

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Super Moderator
99 Kia Elan 1.8L, 17 Ford Edge Sport 2.7L V6, 15 Mustang 3.7L V6, 08 Harley Nightrain
Joined
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10,844 Posts
Best stop by a place like AutoZone and have them load test the battery, and with it running check the charging system - it could be over charging and destroying the new battery.
 

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I now drive a 2003 S-10 Had an 03 LX 3.5 Sorento
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The 03's were notorious for head lights and tail light going out frequently.
When I had mine, the first battery change I put in the largest amp capacity
battery that would physically fit. Fixed the problem.
Also KIA had a fix by replacing part of the wiring harness. I don't know what the part number on that was.
Your best bet is to find the drain and fix that. It could be a bad ground or a bad component not fully shutting down.
 

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Well no idea if you have gotten anywhere yet with your issue. But what I had to with my 2005 Sorento was start off going old school diagnosis. Key off nothing on and test light in hand. Start at engine bay fuse block. Check both sides of each fuse to see if any light the test light. You will need a wiring diagram. Some things are always powered where others are not. The nightmare thing is everything has a wire that goes to the ECM or ETAC. Also check fuses in interior fuse block. It is possible that heat transferred back to the wires from the head light bulb and may have melted the insulation and wires may be stuck together. Do you have book for this thing? It does not show everything but the basics are there. You will never find what your symptoms are in the trouble shooting guides.
 
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