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Battery replacement? UGH

msota84

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#1
Has anyone had to try this? It looks like a "take it to the dealer" type of deal! Any input?????
 

Dale5403

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#2
Here is a video. Looks doable, just not easy.
 

hbalek

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#3
Has anyone had to try this? It looks like a "take it to the dealer" type of deal! Any input?????
Mine failed under warranty and was replaced for no cost by the dealer.
 

UNBROKEN

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#4
Takes literally 2 minutes to get to it.
Pull the push pins around the perimeter of the trim, lift the whole trim piece up towards the hood and the groove that fits onto the bottom of the windshield will release and you can set the whole panel out of the way. The cover on top of the battery just snaps on….pop that off, remove the terminals and push the wire out of the way and unscrew the hold down.
There’s absolutely nothing hard about it. There’s more than enough room to work in there. E02EC5A2-386E-43F3-BC55-8519D76AECF3.jpeg
 

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msota84

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Thread Starter #5
Here is a video. Looks doable, just not easy.
Ahhhh, nice! Couldnt find a video on youtube. I was looking at that shroud maybe having to come all the way off, wipers etc...
 

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msota84

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Thread Starter #6
Takes literally 2 minutes to get to it.
Pull the push pins around the perimeter of the trim, lift the whole trim piece up towards the hood and the groove that fits onto the bottom of the windshield will release and you can set the whole panel out of the way. The cover on top of the battery just snaps on….pop that off, remove the terminals and push the wire out of the way and unscrew the hold down.
There’s absolutely nothing hard about it. There’s more than enough room to work in there. View attachment 8303
Very cool! Thx for the info, I dont need to change it yet, but just snooping around under the hood, it looked like a PITA gettin the shroud moved.
 

UNBROKEN

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#7
That video kinda sucks…he made his life harder by not popping the whole top trim piece off.
 

Dale5403

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#8
That video kinda sucks…he made his life harder by not popping the whole top trim piece off.
That's what I thought also. But it was the only video I found.
 

hbalek

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#9
Why replace it yourself if it's under warranty??
 

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msota84

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Thread Starter #10
Why replace it yourself if it's under warranty??
Just snooping, it doesnt need replacement.
 

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#11
@UNBROKEN old post but maybe most relevant thread. Dumb question for you since you're super knowledgeable -- I replaced my OEM battery with an EverStart AGM, but it didn't come with a plug for the unused vent side. And I can't find anything on the net or at Autozone. Heck, they had NO idea what I was talking about and clearly don't plug the unused vent. What should I do?
 

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#12
@UNBROKEN old post but maybe most relevant thread. Dumb question for you since you're super knowledgeable -- I replaced my OEM battery with an EverStart AGM, but it didn't come with a plug for the unused vent side. And I can't find anything on the net or at Autozone. Heck, they had NO idea what I was talking about and clearly don't plug the unused vent. What should I do?
https://www.fcpeuro.com/products/mercedes-battery-vent-plug-genuine-mercedes-0029972486

 

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#13

TexanST

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#14
I don't know about the rest of you, but for the 2020 ST model the cover / shroud on the inside you need to remove the clips and screw clamps from, it doesn't detach from the vehicle like I'm seeing on the non-ST models in the videos. It looks to be attached with adhesive. That makes getting behind the battery to remove the clamp with the 8mm nut physically impossible for me. I hate to have to throw in the towel on this one but I might have to have it serviced just to replace the battery.
 

Dale5403

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#15
Here is a better video on changing the battery.
 

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#16
I don't know about the rest of you, but for the 2020 ST model the cover / shroud on the inside you need to remove the clips and screw clamps from, it doesn't detach from the vehicle like I'm seeing on the non-ST models in the videos. It looks to be attached with adhesive. That makes getting behind the battery to remove the clamp with the 8mm nut physically impossible for me. I hate to have to throw in the towel on this one but I might have to have it serviced just to replace the battery.
I have a 2020 and thought the same thing. But no, you just need to be a bit rough and pull the trim hard from along the windshield. There are clips there. I did it and didn’t break anything, but yeah it definitely seemed like it wasn’t going anywhere until I got frustrated and was a bit aggressive
 

TexanST

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#17
I have a 2020 and thought the same thing. But no, you just need to be a bit rough and pull the trim hard from along the windshield. There are clips there. I did it and didn’t break anything, but yeah it definitely seemed like it wasn’t going anywhere until I got frustrated and was a bit aggressive
I've got that from two sources now, you and AAA service. So, I'll give this thing a go in the morning. Wow I miss the days of simple battery replacements :D

Thanks for the replies!
 

UNBROKEN

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#18
I don't know about the rest of you, but for the 2020 ST model the cover / shroud on the inside you need to remove the clips and screw clamps from, it doesn't detach from the vehicle like I'm seeing on the non-ST models in the videos. It looks to be attached with adhesive. That makes getting behind the battery to remove the clamp with the 8mm nut physically impossible for me. I hate to have to throw in the towel on this one but I might have to have it serviced just to replace the battery.
It detaches. Guaranteed.
 

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#19
I had a mobile service do it. Be careful with the plastic screw in clips on the shroud cover. It is ggod to order spares as they can be hard to find in auto supply stores. Whole process is more time consuming these days but can be done at home.
 

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#20
I had a mobile service do it. Be careful with the plastic screw in clips on the shroud cover. It is ggod to order spares as they can be hard to find in auto supply stores. Whole process is more time consuming these days but can be done at home.
Home Depot has them! “Specialty fasteners”

edit: lowes, actually. Just went into Home Depot and didn’t see them, but lowes had them as I remembered.
 

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