HELP! completely lifeless Genesis

[Josiah]

jimmy buoy, I greatly appreciate the tip, and for sure I will check that as a possible cause, makes perfect sense to me as I've come across it many times in the past on customers vehicles when I was a working mechanic. I am still surprised that I can't find any info on the 50a breaker or 10a fuse that is inline on the positive cable in the owners manual. I fully understand the purpose of the 50a, but the small 10a appears to do nothing, car runs fine with or without it in place. Ozzy44, Thanks for the vent tube tip, I checked and all is well on that front. Temps are finally expected to get to plus 10 Celsius this coming week (nice change from the minus 15 from the other day when this happened)so I will do a full inspection and advise my findings. Thanks all.

 

[PRINCE KEN]

Many Thanks to all that responded, it helped to narrow down the search. I can see that this is not just a "me" problem, as it has happened to others. I am happy knowing that if it happens again, I know where to start, but my main concern is if it happens on the highway and suddenly no power brakes or steering, could be a scary situation. I will further inspect for any signs of corrosion or loose connectors, and report.

This is a common problem especially with the positive battery terminal post clamp nevertheless your problem is minor and can be easily resolved you don't have to be an A+ mechanic to figure out this problem. Don't worry it will never happen to you on the highway while you are in motion Focus on always having your battery terminals tight on posts metal to metal and corrosion free or the problem will come back. I think you owe lot of lunch boxes to a few kind and helpful fellow forum members on here since you was previously disputing plenty of good advice Lol

 

[Richard Hicks]

I had the same problem with my 2014 Genesis 3.8. I changed out the brake switch and put a new battery in. This morning it happen again, no lights, nothing. I manually open the trunk and pulled the red fuse 50 amp, and everything lit back up. I put it back in and it happen again this afternoon. Took off all the battery cables and made sure they were cleaned and tight. I guess it's a wait-and-see now. I drove it down to a guy that works on electrical problems and hopefully, he can fix it or the problem comes back that he can figure something out. I also saw the eng was a little sluggish once I got it started, but it was ok after a few minutes.

 

[okminty]

Brand new to the forum today, and have a crisis. 2012 Genesis sedan 5.0 r-spec, 95,000km, battery new Nov.2020. Just drove 2km to gas station, as usual, the car runs perfect. Return after paying, press the door handle unlock button(as always), then as I'm getting in, I notice complete silence, no chimes, no seat or wheel adjust, and a completely blacked out dash. It's as if there isn't even a battery in the car. I was a licensed mechanic 20 years ago before the computer era, but changed careers and I am lost as to what this would be. I don't even know how to get into the trunk to battery check the voltage, because Nothing electrical works in the car.

Just after we bought our 2009 Hyundai Genesis, we had similar problems. Dealer had no idea as it was an intermitent problem. After contacting Corporate, their engineer determined that it was a faulty circuit board. I belive it was the Serial board which also controls the locks. Might have been call the SCM (serial control Module) After it was replaced, car has run fine for over 200,000 miles.

 

[okminty]

Just after we bought our 2009 Hyundai Genesis, we had similar problems. Dealer had no idea as it was an intermitent problem. After contacting Corporate, their engineer determined that it was a faulty circuit board. I belive it was the Serial board which also controls the locks. Might have been call the SCM (serial control Module) After it was replaced, car has run fine for over 200,000 miles.

The FOB has a removeable key that can be inserted into a slot on the trunk whih will allow you to open it and ispect the batery, fuses, and cable connections.

 

[Richard Hicks]

I had the same problem with my 2014 Genesis 3.8. I changed out the brake switch and put a new battery in. This morning it happen again, no lights, nothing. I manually open the trunk and pulled the red fuse 50 amp, and everything lit back up. I put it back in and it happen again this afternoon. Took off all the battery cables and made sure they were cleaned and tight. I guess it's a wait-and-see now. I drove it down to a guy that works on electrical problems and hopefully, he can fix it or the problem comes back that he can figure something out. I also saw the eng was a little sluggish once I got it started, but it was ok after a few minutes.

I found out my problem, it was with the battery. Everything was clean and tighten down really tight but it still had the problem, I had to modify the positive terminal now everything seems to be working like it's supposed to.

 

[PRINCE KEN]

I found out my problem, it was with the battery. Everything was clean and tighten down really tight but it still had the problem, I had to modify the positive terminal now everything seems to be working like it's supposed to.

It's a common problem

 

[LexusLovr]

I found out my problem, it was with the battery. Everything was clean and tighten down really tight but it still had the problem, I had to modify the positive terminal now everything seems to be working like it's supposed to.

How does one “modify the positive terminal”?

 

[Qship]

How does one “modify the positive terminal”?

You can use metal sleeves, or anything really to further tighten down the terminal on the battery post.

 

[jimmy buoy]

How does one “modify the positive terminal”?

see post #17

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[G-104872]

Thanks Jimmy buoy for your post #17! I had the same issue and luckily my 2011 Genesis died in my driveway. I had Autozone test my battery and it was fine, and they cleaned the somewhat corroded battery posts. I cleaned the terminals, and when I was reinstalling the battery, I encountered the loose positive terminal even though the nut was fully tightened down, just as you described.

 

[jimmy buoy]

Thanks Jimmy buoy for your post #17! I had the same issue and luckily my 2011 Genesis died in my driveway. I had Autozone test my battery and it was fine, and they cleaned the somewhat corroded battery posts. I cleaned the terminals, and when I was reinstalling the battery, I encountered the loose positive terminal even though the nut was fully tightened down, just as you described.

Glad I was able to help!

 

[shaggydee]

How does one “modify the positive terminal”?
I've had my '15 for about five years when it first totally died. Roadside Assistance, an AAA employee, was attempting to tighten cables however they were as tight as could be and the power was restored. It was about 2 months later when it died again. I just opened and closed the door and power was again restored. I read that due to poor engineering, the clamp doesn't seat on the post 100%. I've read where folks have purchased battery shims in order for the clamp to be fully seated. I bought shims at AutoZone. Once I emptied the trunk so that I could install the shims, one look at the positive cable, post, box etc and I'm like wth is this. I've no clue how it comes off but I'm fairly sure that the shims will solve the problem.