Hyundai Motor 2003 Sonata Logo
Anonymous Posted on Jan 11, 2009

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.

  • 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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Keith Hirsch

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  • Posted on Jan 25, 2009
Keith Hirsch
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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.

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on Oct 24, 2013 • Hyundai Cars & Trucks
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2003 hyundai sonata gas fill problems

I would take the car to your nearest Autozone and they can scan your computer for free, this has to be some sort of problem with your gas evaporitive system
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Fuse box diagram for a 2001 hyundai sonata

You can check this website , you can find there fuse box diagram and description for Hyundai Sonata

Hyundai Sonata 2003 2004 fuse box diagram Auto Genius
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In my Sonata I went out to start it and it just made clicking noises. What does that mean?

This sounds like your starter or starter relay went. Check fuses to make sure they are all good.
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