Hopefully these pics can help. I added a note on one. Just from memory though. I did the repair back in July.. i definitely remember having to use a flathead screwdriver and definitely felt like i was going to break it the whole time LOL.
Thanks for the pics. I was able to get the black plastic off, but also felt like I was going to break it the whole time. Had to use multiple different screwdrivers before it started coming out. I have a new terminal and battery shims on order from Amazon that should be here tomorrow. It looks like the metal covering the terminal clamp is a single piece of metal so I need to remove all of the nuts, so I'm leaving that until the parts come, just to be safe. Don't want to lose anything. Appreciate all the help, as this has been driving me nuts ever since I replaced my battery last year. I was worried the battery was moving around which was why it was coming loose, but it looks like this is an issue that's been going on for many of us.
Yes, it's a poor design all around. Primarily the poor clamping method and the weak trunk floor resting on it with heavy objects loaded in.
The top cover pries up from the sides. Stick a metal pick between the edge of the box and edge of the top and lift up. The plastic is pretty malleable and won't break. Once the top layer comes off everything is exposed and just held down by 10mm nuts.
Great post. This issue has been driving me bonkers over the last year. What part or do you have a link for "Exhibit B: pot metal terminal made by Hyundai for $14. Of superior design"? I could only find terminals that looked like Exhibit A.
Why not just buy a shim that goes over the terminal? Same concept, more grip, much less tampering and only a 10 minute project. It solved my issues. People are overthinking and performing surgery on their vehicles haha. autozone.com/batteries-starting-and-charging/battery-terminal/p/lynx-battery-shims/257147_0_0
I am curious about the possible causes of this problem (positive post/clamp getting wallowed out). Do you have the correct size battery? Is it securely mounted (can't move it at all in any direction)?
When I first expirienced the issue I knew right away it had something to do with my battery. Everything felt real tight& the battery did not budge. Even so, I tightened up every nut on& near the battery at the risk of overtorquing& breaking something. It fixed my issue for a little over a month. In fact my car ran much better. Now the problem has returned& I dont want to tighten the nuts anymore because I feel that this time around, they will snap. I do put alot of weight in the trunk as sometimes I go to Costco& when the cat litter is on sale, I BUY! But i dont think thats the issue, I would have to blame the battery moving around(if it really is moving around) on me taking hard turns& weaving thru traffic. I would hate to find out that the battery setup cannot handle my style of driving
Man! I'm so glad to see your post! So you've experienced the life threatening experience of trying to turn your car on, and it's completely dead! Or buying a new battery; only to find that one dead as well. I'm definitely doing this one. Much thanks!
My experience is, apparently, once the positive post is removed, it will never be secure again. Even service from the dealership; I had the same bad experience of a completelydead car. I believe they said the starter was bad last time. I ended up tapping down a hallow post over a new positive battery post and tightening down over that. It's worked so far, however, I think this option is more permanent.
I thought this was probably my problem, but now I think not. My 2015 power is shutting down completely --everything! I checked everything on the battery with no success---BUT when I got out of the car I slammed the door and presto... everything came back on. Now, for second time I lost complete power, shut the door hard and it came back on...??? Any thoughts or suggestions.
Have you checked that positive post in the trunk. What you're experience is a clear sign that it's not on securely. The fixes is either this mod or others mentioned in this thread.
I have this exact problem, have a 2018 g80 sport, loose positive terminal connection, tried tightning the bolt, but broke it off, now need access to that stud to replace the terminal. when prying the black box apart, any tips to not break/shatter that black box? any good prying starting points? once i can get that open i can buy that amazon terminal part or hyundai part 91980-3X010 for $24 and be done with this. i am also told i can try using half of a terminal sleeve, rather than a full.
the auto parts store guy told me to break the shim apart and try using half the shim, Im going to try that once i open that black box and replace the terminal connector with 91980-3X010.
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