Who can figure this out?- 2009 Genesis won't start

[pskelton]

Hi I need some help with this!
Car: 2009 Hyundai Genesis Sedan


Timeline:

Nov 2019- car won't start after sitting at airport for 2 days- started with jumpstart

Dec 2019- car won't start after sitting at airport for 5 days- started with jumpstart

Jan 2020- Had battery replaced

Feb 2020- Had alternator replaced

Feb- 2020- car barely starts in the morning if I don't drive it for 1 day.

Feb-March 2020- local repair shop runs parasitic drain test on car for several days. Inconclusive. They replaced some wires.

April 18 2020- Car doesn't start after sitting for 1 day. Doesn't start after charging for 10 minutes with jumpstart.

Anybody got an idea what's going on?


Thanks

 

[joegr]

It's all guessing without taking measurements. My best guess is a parasitic drain that they have missed, but that really isn't a very good guess due to the distance involved.

 

[EdP]

It's all guessing without taking measurements. My best guess is a parasitic drain that they have missed, but that really isn't a very good guess due to the distance involved.

That is my guess too. Even a cheap battery does not go dead in a day or two with no drain. You may need a better shop to check it.

It won't tell you what the drain is but you can pretty much verify that is the problem by taking off a cable if the car is going to sit a couple of days.

 

[Gunkk]

Check for a missing (or incorrect) rubber stopper above the hood anti-theft tamper switch. See my post #2 in this thread:
2009 sedan battery draining can't start with new battery car completely dead

 

[pskelton]

Thanks for reading and for the tips! I will take a look at the rubber stopper tomorrow and see if there's anything fishy going on

 

[pskelton]

I took the car to the Hyundai dealership and the battery test failed right away. So I went back to the original shop and got it replaced since it was still under warranty. It's odd because the battery has supposedly been testing fine when it was previously checked (by the shop that sold me the battery). The car seems to be starting well now so we'll see.