Question about Hyundai Motor 2003 Sonata

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Screwed up electronics in 2003 Hyundai Sonata

So the radio in my sonata went out a few months ago. I replaced the fuse, problem solved. Last night my battery died, and I had to replace it also considering that this was happening ALOT. Since the new battery, my check battery light wont go off, the trip odometer resets everytime I turn the car on, the radio and the clock are dead, and the gas gauge kinda flickers, but goes back to normal after a minute or so. I checked the 10A and 15 fuses, put new ones in, to no avail. Also, the door locks are now messed up. Any ideas? Thanks,
N.

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  • missj16 May 10, 2009

    I can't find the fuse box for the radio. I checked the one under the hood but it do not have a fuse for the radio and clock.

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Sound like the vehicles ECU (electronic control unit) is acting up. All electronics are controled through this module as well as the features your car is programed with. Many manufacturers have different names for these modules but they all perform the same tasks. Your best bet is to bring it to a dealer where they can hook up a computer whith their diagnostic software in it to pinpoint the problem. All electronics in vehicles are controled by modules which are like mini computers.

Posted on Jan 25, 2009

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Posted on Jan 02, 2017

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Hi. I have a 2000 jeep sport Cherokee. I recently replaced my battery a few month ago. My jeep died again at work and we all assumed it was the alternator so we replaced that 2 days ago. When my husband...


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