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Negative battery terminal replacement

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31K views 39 replies 21 participants last post by  Rusw  
#1 ·
Anyone knows where to source this thing, or what the part number for it is? Or better even, does anyone know if there is a replacement that works, but follows a more traditional design of the part that clamps around the battery terminal? Diagrams on the Subaru sites keep giving me something else (29182) that does not quite look right. Either an error on the website, or a part not in the system. Mine seems to have come loose and does not stay on the battery. Seems like a change in design for the worse from the previous years.

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#2 ·
Someone was recently saying on fb that their dealership said the Gen 6 negative battery cable was a “one and done” kind of thing and that once it was loosened couldn’t be tightened and had to be replaced.

I’ve had my battery out several times and my negative cable tightens down fine.

That being said, have you called a dealership and asked for the part number and the cost?
 
#4 ·
Also, the guidance for disconnecting the negative cable is to use the nut to remove the connection between the cable and the current sensor. leave the clamp on the post unless you are swapping batteries.

it should be part number 29182AA11A the picture looks wrong at the Subaru site though.

it’s the same pic as the 2019… that’s the pic where it says “battery cable terminal end” and then you click on the part number and see the pic of the current sensor. At least the 2020 has the description more accurate.
 
#5 ·
Also, the guidance for disconnecting the negative cable is to use the nut to remove the connection between the cable and the current sensor. leave the clamp on the post unless you are swapping batteries.

it should be part number 29182AA11A the picture looks wrong at the Subaru site though.
Ah, that's what I was wondering... so it does look like 29182 is probably correct, after all, and the picture is probably from a pre-2020 model. Makes sense. Thanks!
 
#13 ·
Yes, this negative post connector is total garbage. With the nut completely tightened, I can lift the terminal connector right off of the battery. Had to use pliers to crimp it tighter, and then tap it in place with a mallet. The positive terminal connector is just fine. Why couldn't these moronic engineers use the same design for the negative terminal?
 
#17 · (Edited by Moderator)
THANK GOD THIS POST EXISTS! This weekend I replaced my door Speakers in my 2022 WIlderness and the terminal piece broke! I f******g panicked and had to temporarily "fix" the break. I called around a few Subaru dealerships and of course only 1 of them had this part and because it was Saturday at 4pm there was no way I'm getting before they close! Can't believe they designed this thing that way!
 
#18 ·
It was a costly mistake for me when I switched out the blinker bulbs to LED. I took the battery out for more room to mount the resistors and the negative terminal did not go back one. The way they designed it with the V part that supposed to close up with the nut and bolt was terrible. I ended up going to the dealership and spending $50 after tax for a replacement. I just did a battery tie down this weekend with a fancier one and carefully only removed the bolt that held the large black ground wire and unclip the clip but left that part connected to the post still. Anyone who's switched to a new replacement battery can chime in but I swear this design is like a one time use.
 
#19 ·
I have not found a need that requires removal of the negative battery terminal. It is hard to comprehend that a dealer would change this part out with every battery replacement.

For those that have had to remove this terminal connection do you think a battery post shim would be of any help?

Here is one example:

https://www.napaonline.com

These are readily available including Amazon.
 
#20 ·
I have not found a need that requires removal of the negative battery terminal. It is hard to comprehend that a dealer would change this part out with every battery replacement.

For those that have had to remove this terminal connection do you think a battery post shim would be of any help?

Here is one example:

https://www.napaonline.com

These are readily available including Amazon.
I wish I saved my old one but the way it clamped together was compromised so I don’t think a shim would work. Even the new one I have now after replacing the stock battery tie down with a Torque Solution on this weekend, I noticed the terminal and battery post was easily turntable and I was careful to just tighten the nut a tad more in fear it wouldn’t hold at all again. That part isn’t cheap to replace.
 
#21 ·
I had same issue. You need a needle nose and maybe another pair of pliers to bend it back in place so the bottom piece lines up inside the gooves. The nut should NOT be be loose at the top so it says in place when you slide it over the post. SO YOU ONLY HAVE TO TIGHTEN IT A LITTLE. I think it’s only 5.5 lb torque o these cheap terminals.
 
#29 ·
I was having to jump my 2022 outback wilderness so I went to get new battery. , but guess what it was not my battery but the ground connector that was causing it not to stay charged so now looking to replace the connector but can not get a good order number to replace it I see on here that I’m not the only one with this problem first time took cable off and just turn over 10,000 miles on car
 
#32 ·
Why didn't they just keep the same design with a horizontal clamping bolt, as has been in use for the last 100 years? I replaced the positive clamp with a traditional horizontal clamp bolt, but because of the voltage switch, I had to leave the negative one there. I tried using a post shim, but the clamp wouldn't open enough to install it correctly. I crimped it back into the correct shape, and tighten the bolt to just before it twists off, and the negative clamp now, doesn't rotate.
 
#33 ·
Why didn't they just keep the same design with a horizontal clamping bolt, as has been in use for the last 100 years? I replaced the positive clamp with a traditional horizontal clamp bolt, but because of the voltage switch, I had to leave the negative one there. I tried using a post shim, but the clamp wouldn't open enough to install it correctly. I crimped it back into the correct shape, and tighten the bolt to just before it twists off, and the negative clamp now, doesn't rotate.
 
#35 ·
The replacement battery connector/sensor mentioned earlier in this thread for Gen6 Outback/Legacy is 29182AA11A.

The battery terminals are made of lead. People who have a distorted clamp and don't want to pay for the replacement part may be interested in buying a lead sheet and cutting it into strips that can be used as a thin shim. Use as many strips or wraps as needed to get the desired thickness. For reduced electrical resistance, buff the lead sheet with fine steel wool.

This trick may also be useful for installing a 3rd-party battery whose terminals are slightly smaller than the OEM battery.