Alternator problems

Alternator: Device that generates the electric current that charges the battery.
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Alternator sound

2023 Hyundai Elantra 54000 miles
Alternator Make weird sounds
1
Saad from United States 9 months ago  
SA

Engine won't start

2013 Hyundai Elantra 2.0L limited 75498 miles
Wife and I were out shopping today, Stopped at the market to pick up groceries. Headlights and radio work fine, but engine would not turn over. Got a jump start from Hyundai roadside assistance(good service) and drove the car for about 30 minutes to recharge the battery. Arrived at home, turned off the ignition. Tried to restart the car, but the engine wouldn't turn over. Headlights, radio, pwr windows, seats, etc, all work fine. Checked alternator belt tension, and it seemed to be ok. Didn't pull battery to have it checked. Any suggestions?
confused from United States 10 years ago  
CO
45 reports 
jrok from United States 10 years ago
My wife has a 2015 elantra and am having the same issue, less than 17000 miles...did you ever find out what was the issue?
2013 red coupe cop magnet from Canada 10 years ago
If the battery is under a certain charge then a jump will work and the lights will work but it won't be able to recharge from the altenator .take it to a shop like Canadian tire or "the us equivalent " and get then to check it. Usually done free
AKuby from Canada 9 years ago
Keep in Park , found a little trick to it , as you turn the key , play with the shifter fiddle it in place back and forth. She'll go
cheekybanana from Canada 4 years ago
I notice the same has been happening with my 2014 Elantra GL. Did you ever find out what was causing this?

Reading online feels a lot like Neutral Safety Switch / Inhibitor Switch as someone else also pointed out.
Wan xxx xxx abe from United States 9 years ago
I'd say get a voltmeter tested alternator output it should be 14 volts without the lights on down to 12 if they are. If the lternator is putting out the voltage is necessary check yor contacts of your battery post see if they're corroded they may look clean on top but underneath they still may not be making contact
Boby from Australia 8 years ago
Tried to to jump start with jump cables won't even kick over. Is there fuses that might be blown
Cassy from Australia 6 years ago
I just wrote a big long comment explaining what it could be & the issues I had... I can see this post is a couple of years old... but it might hopefully help anyone else out 👍🏼😊
Cassy from Australia 6 years ago
The inhibitor switch needs replacing!

I’m in Brisbane, Australia & had the same issues! So frustrating!
Every time I was in a rush to be somewhere!

1st time, I had the battery replaced. 2 weeks later my car wouldn’t start every second day, then weeks later- 4 times in 1 day!

Most times it would start after 8 tries - but the last time - it wouldn’t start after 25 goes! 😤

Had to walk all my groceries home, then walk back before my car got towed!

Roadside assistance tried to start charging me $85 callout free + tow fee, then the service centre wanted to charge me $160 to tell me what’s wrong with it!
Even though i have gold cover warranty!
I told them all where to go!

So after several hours of online research MYSELF... (& I know NOTHING about cars!)
I came to the conclusion that it was the Inhibitor switch!

At my next service I asked them to check what the problem is (after complaining to the Car Dealership Manager), they checked for free, however couldn’t find any faults / issues! 🙄

The Manager told the service guys to order in the part & change it anyway (due to my persistence) and guess what????
No issues since!! 😱🥳

The new Inhibitor Switch part is a slightly different shape from the original.
So if your car isn’t under warranty anymore, contact Hyundai & they should supply the part for Free!
Otherwise it’s only a $20 part & takes 10 mins to change over. There is 1 good YouTube video of a guy showing it.
I have a 2013 Hyundai Elantra, it had only done 23,000 klm’s. I’m female & the roadside assist guy kept trying to tell me it’s definitely something more serious like the starter motor etc 🙄
I told him there’s no way it could be that!
Anyways, hope this helps a few more annoyed & frustrated people out there! 👍🏼😊
Gtjoseph from United States 3 years ago
Where is the inhibitor switch located?
Steve from United States 3 years ago
@GtjosephUnderneath the air filter/intake, just in front of the battery
Kpm1 from United States 2 years ago
$20? I just had to pay $80 for one?!
Bigjetty from United States 3 years ago
Of a 2002 Chevy Cavalier LS 2.2 L and it's and a number four in the van as a but I can start it by jumping pins 87 and 30 with the crank relay the 10 amp fuse ignition fuse was blown I replaced that didn't help the cigarette lighter fuse keeps blowing and the dome light keeps coming on when I'm stopping so certainly something electrical is going on I did just replace the ECU I went through the steps to get the Anti-Theft off and it starts so that can be the problem I just have to jump the pins any help would be greatly appreciated... Also like the top two rows of fuses inside the car the panel or not showing voltage but are not blown either so I have that going on too so I guess that's the power side not the control side I don't know I'm just starting to learn a lot about this as I'm trying to fix it but I still have no success after 2 months of trying
Hadbool from Yemen 2 months ago
Air bag lamp is ON all the time
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Starting problem.

2006 Hyundai Elantra 2.? 249000 miles
Battery light came on, went off parked it. Get in the next day and radio wasn't working. Drove it, got out went to leave, radio worked, low beams went out. Went to troubleshoot the low beams, heard a hissing from the battery, put new one in, didn't start, had the alternator checked, bad, so replaced it, still no start. Took the starter in to get checked. It passed. So I waa thinking it's a loose wire or a bad ground or something. Or the ecu. Took the ecu out and it looked good, (no obvious burn marks. Haven't found any loose connections or bad grounds. Not sure what to do next, I wanna try everything before I send in the ecu, it's expensive. I'd hate to send it in and pay, and there not be anything wrong with it. Any ideas moving forward??
Sharedconfusion from United States 3 years ago  
SH
3 reports 
Sharedconfusion from United States 3 years ago
I changed out the relays and it started. There is a drain on the battery somewhere I think
muskmelon from United States 2 years ago
If you keep having the problem, I'd get yourself a cheap multimeter and do a parasitic draw test. I had several issues starting my car and got halfway through the fusebox with a multimeter before I realized I left my wireless OBD2 reader in like an idiot, and it was sucking power.
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Car turns off

2019 Hyundai Elantra 70000 miles
The car turns off when I’m going slow sometimes and it’ll just be the motor and not everything inside but alternator is good and battery is good but I would have to turn it off and turn it on again for it to be fixed
Mike from United States 3 years ago  
MI
2 reports 
Evilcat from Costa Rica 24 days ago
If i didn't warm up the car at least 1 min before the care sometimes go off even turn off after a intersection, very dangerous
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It's like my battery dies without the key in the ignition and nothing

2020 Hyundai Elantra 2 liter four door s.e 8446 miles
It's like my battery dies without the key in the ignition and nothing running in the entire car it will almost always start right up with jump but sometimes if u just wait like twenty minutes or so after first trying to start the engine it will sometimes start on its own not always though jive checked my alternator and tried to c heck my connections also bit cant seem to find problem even when I connect the computer it doesn't show any codes or problems help 🥺
T
Frank from United States 2 years ago  
FR
2 reports 
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