Turn off ignition and everything goes black, no battery power.

[dfyffe]

The last few days Im having intermittent no power, I have to jumpstart. The battery was replace in December and is testing good. I notice this will happen after a drive and I turn off the ignition, after jumpstart if I turn off the ignition immediately, car with restart no problem, It will work good for a few days, then all of a sudden no battery power to do anything. No loose cable that I can see. This is a 2015 3.8. Anybody came across this problem ?.

 

[Mcc]

Alternator not charging the battery? Have you checked it?

 

[raggedy]

parasitic drain somewhere, possibly.

 

[dfyffe]

Turn out it was a loose chassis ground, blame the body shop the made some repaired a few weeks ago, These repair tech don't seem to take any kind of pride in their job, I also found screws missing from the trunk liner. This is unreal, what's up with these company, I'm really scared to get my car worked on, even from the dealer. SMDH.

 

[dfyffe]

parasitic drain somewhere, possibly.

Wasnt, the battery tested full charged and good.

 

[raggedy]

it's not just Genesis dealers. I have never had a body shop actually put every fastener back in place after a repair. Pride in one's work has been missing in all walks of life for many years. Sadly.

 

[Kraig Wilkinson]

The last few days Im having intermittent no power, I have to jumpstart. The battery was replace in December and is testing good. I notice this will happen after a drive and I turn off the ignition, after jumpstart if I turn off the ignition immediately, car with restart no problem, It will work good for a few days, then all of a sudden no battery power to do anything. No loose cable that I can see. This is a 2015 3.8. Anybody came across this problem ?.

Clean cables and the battery posts.
Make sure they are tight .
Try that , start with the basics.

 

[shaggydee]

The last few days Im having intermittent no power, I have to jumpstart. The battery was replace in December and is testing good. I notice this will happen after a drive and I turn off the ignition, after jumpstart if I turn off the ignition immediately, car with restart no problem, It will work good for a few days, then all of a sudden no battery power to do anything. No loose cable that I can see. This is a 2015 3.8. Anybody came across this problem ?.

I had the same problem. Stopped to do an errand. When I shut off the car, everything went dead....nothing!
Called Roadside Assistance. He couldn't tighten connections any more than they were but while checking, power returned and I started the car. I learned, through an older thread here, that an engineering issue may be to blame. Roadside Assistance told me that if it happens again, hit the floor of the trunk with an open hand. It worked. A fix is to place a battery post shim on the positive post. Haven't had a problem since.

 

[Orangepeeled]

Turn out it was a loose chassis ground, blame the body shop the made some repaired a few weeks ago, These repair tech don't seem to take any kind of pride in their job, I also found screws missing from the trunk liner. This is unreal, what's up with these company, I'm really scared to get my car worked on, even from the dealer. SMDH.

Do you have a picture or diagram of it? Having the EXACT same issues as you where I would have parasitic draw on my battery after I got an oil change done and a mechanic can't 100% pinpoint it.

 

[dfyffe]

Do you have a picture or diagram of it? Having the EXACT same issues as you where I would have parasitic draw on my battery after I got an oil change done and a mechanic can't 100% pinpoint it.

Sorry I dont, I eventually had to replaced the positive battery terminal, as it was not tightening firm. There is a thread with pictures on the battery terminal replacement topic. I just bought the oem positive terminal because I didnt want to do any cutting.

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