Dead battery

[427435]

Went out this afternoon and the battery was dead on my "new" car. It had sat for 3 days without starting. Checked voltage and it was at 5. Recharged it, started the car, and voltage went to 13.8--------so alternator is working.

I also know the car needed jumping to get it started when it was taken off the transport. Wondering if I have a bad battery.

Anyone else have a problem with their OEM battery?

 

[DominicJE]

Try to see if this is the issue: (I seen this answer on several threads concerning the battery so this may be the main culprit.)

Yes, check the post about the missing rubber stop that attaches to the underside of the hood on the drivers side (its small, about 3/8" in diameter) that turns on the alarm and puts the car in sleep mode as it depresses a small switch when hood is closed. If your's is missing then the battery will die again and again, and agian.

 

[Southern Boy]

Take a look at this thread:

http://www.genesisowners.com/hyundai-genesis-forum/showthread.php?t=10966&highlight=battery

 

[427435]

Thanks for the information on the post/switch under the hood. Mine is there and is aligned OK.

I got to thinking-------------------is the "sleep" mode activated if the car isn't locked up? My car sits in a garage and I don't lock it.

 

[homeofstone]

Also check and make sure the negative battery terminal is tight on the battery post and the bolts are tight where it bolts to the body in the spare tire well.

 

[427435]

Also check and make sure the negative battery terminal is tight on the battery post and the bolts are tight where it bolts to the body in the spare tire well.

Thanks, but I checked the voltage right at the battery. It was down to 5 volts when I first checked, so the battery was indeed discharged.

 

[scottdk]

Mark, do you by chance leave the key fob inside the car in the garage?

 

[427435]

Mark, do you by chance leave the key fob inside the car in the garage?

No. It stays in my pocket.

 

[homeofstone]

Were any fo the interior lights (reading/dome) left on?

 

[Southern Boy]

Mark, do you by chance leave the key fob inside the car in the garage?

Scott, what’s the deal with the key fob being left in the car?
The only time I remove the fob is when I’m out and leave the car unintended, other than that it always in the car. Never had any problems with discharged batteries or anything else.

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[scottdk]

Scott, what’s the deal with the key fob being left in the car?
The only time I remove the fob is when I’m out and leave the car unintended, other than that it always in the car. Never had any problems with discharged batteries or anything else.

Sorry, I should have clarified.

A long while back there were a few peeps that reported a dead battery issue, and they determined that leaving the key fob in the car (such as in the garage overnight or longer) drained the battery. I remember one of the posters saying this issue was also found in his Nissan with a smart key and weired as it sounds, a bunch of other cars have the same issue according to Google. Found the thread below.

http://www.genesisowners.com/hyundai-genesis-forum/showthread.php?t=3893

 

[Sinstr]

I had the same issue with my 2013 Rspec, It was parked for 4 days. Only had 7 volts, and this happened at 600 miles on the clock. Jumped the car, took it to the dealer and had a bad cell. Call your dealer, but they had a bad batch of batteries and have had multiple cars with this issue.

 

[Southern Boy]

Sorry, I should have clarified.

A long while back there were a few peeps that reported a dead battery issue, and they determined that leaving the key fob in the car (such as in the garage overnight or longer) drained the battery. I remember one of the posters saying this issue was also found in his Nissan with a smart key and weired as it sounds, a bunch of other cars have the same issue according to Google. Found the thread below.

http://www.genesisowners.com/hyundai-genesis-forum/showthread.php?t=3893

Thanks for the link to the thread you where referencing.

I haven’t had any problems with leaving the key fob in the car and was just curious.

I agree though with some of the concerns expressed about leaving the key fob in the car while the car is in the garage because of security and theft concerns, but where I live I’m not concerned about someone gaining access to the car.

Besides Jetro will always be glad to see them since he is always hungry.

 

[Mark63021]

I'll bet you've got a partially shorted cell and that the battery is always a bit warm to the touch even after overnight.
Should be covered under warranty, right?

 

[mikec]

Certain things prevent the Genesis electronics from fully turning "OFF" when you shut the car off. The electronics initially go to a "standby" mode when you park/turn off the engine; after 20 minutes or so they fully shut down. This standby mode lets the system be ready faster after you've run into Starbucks, 7-11, got gas at the pump, etc. The system will stay in standby though if a door is open, trunk is open, the hood is open (which is what missing rubber bumper piece tricks the car into believing), or if a key fob is detected nearby. Anything that lets the car think "driver hasn't gone too far away" makes it stay "ready." And makes it put a lot more drain on the battery.

One Genesis owner had the quick draining battery issue as well as a missing fob when he bought his Genesis - the dealer could find only 1 of the 2 fobs and promised to get him another quickly. Turns out the "missing" one was in the black plastic area around the windshield wipers under the hood - where the car could detect it 100% of the time... so it never left standby mode.

On my 2009 Tech sedan there is a small blue light on the bottom edge of the CD/DVD slot. At the 20 minute point, that blue light blinks ON for a second as a signal the system is moving from STANDBY to fully OFF. Something folks can watch for - or the lack thereof.

Oh, my car can be parked for well over a week without any sign the battery is discharged... and that's unlocked in the garage. You do not need to lock a Genesis sedan to keep the battery from going dead in 3 days. One thing to look at: with the car parked in a dark garage or at night, squeeze into the back seat area (haha) and open the trunk pass-through. Is the trunk light on by any chance?

mike c.

 

[427435]

Thanks for the responses. Yesterday, after sitting for 12 hours, the battery voltage was still at 12.48-------------so that was about what I would expect. There were no lights left on originally, and I will see what happens when it sits for a couple of days. Probably won't happen for a while--------------I still drive it every chance I get.

 

[Gurkha]

I just started my car after 2 months. Started right up as usual. Mind you it was connected to a trickle charger, but I have left it for 2-3 weeks in cold temps in previous winters without the trickle charger and no problems either. You probably have a defective battery.

 

[QuantumRift]

Bad battery. My 3.8L 2012 has sat for as over two months before being started. Batteries do come bad from the factory. It's an each check and fix.

 

[427435]

Well, the battery is probably OK--------must have had a light left on somewhere. We were in Mexico for 3-1/2 weeks, and the Genny started fine yesterday (no trickle charger either).