Question about 2006 Hyundai Sonata 2.4

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Random blinking of lights on dashboard, then battery out

The dash lights (ABS, seatbelt, battery) started to randomly flash recently, and only on occasion, while driving. Today, the battery light went on and remained, followed by the seatbelt light, which also remained on (seatbelt was attached). The radio then went off, too. I stopped, but couldn't restart (just one crank, then nothing). I tested battery, then replaced (for first time). Car started with no problem again, but the flashing lights started again. When on the interstate, the occasional flashes stopped - but when I first came to a stop, it started again (while using a/c, radio and headlights). Is the alternator, or something else?

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  • Hyundai Master
  • 5,341 Answers

Could be a weak or failing alternator. Have it tested.

Posted on Jul 16, 2013

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Posted on Jan 02, 2017

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heimlich
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SOURCE: Low battery light comes on, then goes off,

It sounds like your battery is not charging. You may have a good battery and a good alternator but what you need to look for is the alternator fuse . It is usually a square block style fuse , 50 to 80 amps, normally in a fuse box under the dash. If it blows the car will drive till it runs out of battery juice and go bonkers just like you describe right before it dies. The charge light on the dash usually will not warn you of the problem. I think the manufacturers just want to charge you big dollars just to replace a fuse most people are not familiar with.

Posted on Nov 08, 2010

adadoug
  • 682 Answers

SOURCE: 2002 hyundai elantra has a problem with erratic flickering dash/headlights

Sounds like you have a bad ground. If it is not that you must have a gremlin.

Posted on Jan 03, 2012

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