Posts: 452
Joined: Tue Apr 21, 2015 8:07 am
Location: Southern California

Re: Replace 12V battery in 2017-2018 FFE

Wed Apr 08, 2020 2:00 pm

Understood where the 12V battery is. But if your jump starter is in the trunk, and you can't open the hatch, the only way to get to it is through the passenger compartment. Have you tried to do that? You may not even be able to get to that part of the trunk with the hatch down, particularly if you have your "coffin" in the lower area.

I don't own my FFE any more, and my son has the RS in Alabama, so can't check to see how hard it is to get into the trunk area from the passenger compartment. But I'm guessing it isn't easy.
GONE - 2015 FFE, Magnetic with leather interior, debadged & tinted
38,500 miles (since May 2015), average 246 Wh/mile

REPLACED WITH - 2018 Tesla Model3, LR RWD, Obsidian Black
20,000 miles (since Nov 2018), average 235 Wh/mile

Posts: 141
Joined: Sat Jan 30, 2016 4:22 pm

Re: Replace 12V battery in 2017-2018 FFE

Thu Apr 09, 2020 3:55 am

campfamily, True, if 12v is completely gone, the hatch release is disabled.
Fortunately the rear seats fold down to let somebody reach into the hatchback area. I tried it and its not too difficult. Could be for some though.

Posts: 1
Joined: Thu Apr 08, 2021 10:43 am

Re: Replace 12V battery in 2017-2018 FFE

Thu Apr 08, 2021 10:44 am

I don't understand. Do you need to replace the accumulator? Or do you have problems with it? If you are not an expert, I advise you not to climb over the trunk to replace the battery. You may not be able to properly disconnect it and connect a new one in a narrow space. The main thing is not to break anything there... It's better to contact a specialist, for example,, masters from there helped me when I needed to replace the accumulator on my car. The problem was that I bought an old car, apparently, the battery was not new at all and quickly stopped working. I wanted to fix it, but nothing came of it and I just replaced it with a new one.

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