Hyundai Sonata 2013 battery issues

you should have the alternator tested. also have the car tested for a parasitic draw.

I have the same problem and same year. I will park it for a few minutes and randomly sometimes the battery will be completely dead when trying to restart it. After reading a couple forums I am going to try taking the lights off auto first, then if that doesn't make a difference then I'll see about pulling the fuse for the radio (though I read something about the fuse also tied in with the security and something else so not sure if I can pull that.). Anyway, I'm going to start troubleshooting and see where it leads. 2 days ago it died and got it jumped. Drove it about 5 miles to a pep boys and the battery was fully charged and tested good and the alternator was tested and good. I hate troubleshooting cars!

That is an extreme draw! There are a couple of good videos on parasitic draw testing newer vehicles. Ericthecarguy.com has a good one, but there are others too. I would suggest trying them it is a little different on the newer cars because of the security and computerization, but not too bad. I think you can do it with a cheap multi meter.

Same here!! Our dealership said the car is almost 3 years old now and to replace the battery. We are trying it today.

Look at the rubber bumper that moves the hood lock switch. Let me tell you the story. I just bought a 13 SE and found that battery drain was about 480 milliamps when I thought everything was off. This is about 100 times what it should be. After reading the owner's manual, I noticed a statement about the entertainment system going into "WARM UP" when the car was unlocked. So-- lock the car and the extra drain will dissappear. Things changed but the current was still high. Reading a little more, I find that the hood switch is part of the lock circuit. Pressing the switch down and locking, the current went to 37 - 45 ma.After releasing the switch, I look up at the hood and notice that there was nothing there to work the switch. A rubber washer did the trick.

brand new 2015 Hyundai Sonata.... 15 months old, 5,600 miles. I only drive it 2-3 times a week. After setting for a few days at Christmas, drove the car a few miles... parked over night... drove the car back a few miles... parked 3-4 hours...got in to leave and it was dead. Only thing showing was a tiny image of a key on the dash. Went and put new batteries in fobs...and still dead. Called service. Said battery dead. Went to get new battery...they said battery fine...alternator not charging. Went to DEALER... they charged battery and said it fine...alternator fine. and said that I just don't drive it enough to keep it charged!!! Called Hyundai ... at first they agreed that that explanation was ridiculous and then confirmed that all the electronic junk on the car (that I don't even subscribe to or use) will run it down when not driven a lot. So... my only solution? Run gas through the car daily so I won't end up stranded!!! Those system should be able to shut down when not being used. I wish I had my 1977 Olds back!!!!!!

my friend have hyudai sonata is 13 year ago need to self sometime the battery aldy take it another ppl if like that the car can self again,

2015 Hyundai Sonata Limited 2.0T, AGM battery would die after 24 hours, cold weather or warm. After numerous trips back to the dealer and they couldn't find anything wrong, we had the satellite Blue Link shut down. Haven't had a problem since. Seems that with the Blue Link, our car at least, was constantly talking to to the satellite, updating it's GPS, and checking in it's status. Once that whole system was shut down, the was no more battery drain. This sucks because the one usable function with Blue Link was the remote start. We'll be installing an aftermarket remote start next summer.

My car just randomly went dead 2 days ago after normal driving. The tow truck driver got it going again and it's been just fine ever since, but I'm scared it's going to happen again and I will be stranded. Interesting comments

We think we may have solved this mystery no thanks to the dealer. My 2013 Sonata battery randomly died one day without warning. I figured I just needed a new battery since it had been over 2 years. Got a jump with AAA and went and had a brand new battery installed. 48 hours later car battery is dead again! Took it to the dealer and of course, they found nothing wrong. $100 worth of diagnostics and nothing to show for it. And they also said "they had never heard of this issue before" Really? I call bullshit on that. My dad did some reasearch and apparently the "Auto" light switch *may* be the culprit. As a test I kept the "Auto" light switch off. It has been now been 5 days with no issues. I am going to continue this test for another two weeks, and if no issues than I am taking it to the dealer to get it fixed. Thanks to this issue that the dealer could not find I am out $320 for a new battery, diagnostics, and a battery charger I bought to keep in the trunk as a safety measure. Will keep you guys updated!

I have a 2013 Sonata Hybrid. We replaced the 12 v battery January last year and just had to replace the 12 v battery again. Is there a way to get better efficiency from the battery?

Seems like Sonatas have battery issues. In about May 2018 I was driving down the highway one afternoon and went to give the car gas so I could get over in the right lane at that time all my lights came on, on my dash and the brakes got hard. Mind you I was doing about 65-70 mph could not give the car gas at all, it had died on me on a 4 lane highway, luckily I was able to get the car safely over to the break down lane with 3 children in my back seat. In the end, I replaced the battery and car has been working ever since. I contacted the dealership and they don't have a clue !! smh I swore the alternator should have keep the car powered ?

Having similar problems. Came out found battery dead. Though I left something on. Silly me huh? So we charged it, drove it came back made sure everything was off. Next day, while not completed it was very weak. Charged it again, drove it. This time left lights in "off" mode as opposed to "auto" mode. This morning came out to take to mechanic to check battery. It started fine. Took it in, they checked battery, alternator and performed a few other test. Everything fine except he thought there was an electric wiring issue cause a drain on the battery. Specifically with the lights. I think this is an issue Hyundai should address. Perhaps if enough of us complain.

Unfortunately, I am faced with the exact same issue. Vehicle will not starts, as battery is completely dead. Looking to charge/replace battery and evaluate the situation. Thanks for the posts, as my vehicle was running fine until two days ago.

Get rid of the car ,i can't find out about why my battery goes dead all the time . started a couple of months after i bought it.have bought 3 batteries so far hyundai service people have no idea.Don't buy another Hyundai is my suggestion.they don't see interest in the problem

My '18 Sante Fe was dead this morning. Couldn't even open doors with fob. Dealer told me that I need to drive more, not just to the store and back. Seriously???? During winter I'm away, but my son with start and run car for 20-30 mins. every couple weeks. He said that this will not do; that I need to have trickle charger attached. What kind of crap is this? Now, I have to have it towed to dealership. Husband has had charger on for 4-5 hrs. and only a trickle of a charge in battery; enough to unlock doors. This is bull!

I have 2105 Sonata. Drive lot of short trips. I had previously a Mercedes which I used the same way for years. No problem with Mercedes. Sonata battery went too low to start 2 yrs after I got it. Recharged it, next day, same thing. Checked current drain with (everything??) off. Car is drawing too much current when it should be off. Hyundai denies it is a problem. I am in southern Calif, battery should last 7-10 yrs here. Battery had been OK until Nov 2020, battery is going down again. Left me at the donut shop. I think current drain is probably from the anti theft system or remote key?? Am going to try to find out from Hyundai

Since the original battery on my 2014 Sonata died after 5 years, I've had nothing but problems. I only have 28,200 miles on it. I've now had 4 new batteries put in my car in the last year. My local repair guy can't find anything wrong and told me if it happens again to bring it to my dealer. Last week it died again and I had it towed. The answer: can't find anything wrong, but replaced 1 fuse. Cost: $224.00. They said that I don't drive it enough and told me to buy a battery generator. I did order one but if I was to use it I would have to have wiring done in the ashtray because the outlet does not connect directly to the battery. Then 4 days later, after not driving it for 1 day, it was dead again. The AAA person that came said that her testing equipment says that the battery is "more than dead". She said that it is not normal to have to put a battery generator in. She said to get rid of the car and stay away from Hyundai. I do not leave anything on automatic in the car so it is something behind the scenes that is draining the battery that you can't see. I called the service department for the main headquarters of Hyundai today and was given a claim number and that someone would get back to me in 3-5 business days. I asked about a loaner car while this is being sorted out and she told me to contact my dealer, which I did. Of course, I was told that they don't have any available and to call around to the other dealers. Seriously? I'll give them 1 week to resolve this issue and then I'm done with Hyundai.

I have the same problem with my wifes 2014 Hyundai Sonata. New battery holds over night and the Alternator tested good on and off the car. When the battery discharge comes on the blower and the control panel and the wipers all quit at the same time. Huffines Hyundai in Plano,TX charged me $360 to tell me they could not duplicate the problem and said they could replace the Wiper switch and the wiper motor and the blower resistor and the Blower motor. but no guaruntee. What the hell?