Hello everyone,I’m new to the Land Rover family and have been doing a lot of research on an issue I’m having, but I’ve hit a bit of a wall and wanted to reach out here.I have a 2016 LR4 that had been sitting in a garage for about 4 years. When I first got into it, I checked over the wiring, belts, fuses, and connections, and everything looked good. I expected the battery (and key fob) to be dead, so I replaced the battery. After that, it started right up. I let it run for a while, pulled it out of the garage for the first time in years, then parked it back inside and shut it off.The next day, I came back, cleaned it up, added windshield washer fluid, and tried to start it again—but it was completely dead. No power at all.At first, I thought maybe leaving it at full ride height drained the battery (I read that somewhere), so I rechecked the battery connections and even exchanged the battery just in case it was faulty.Today I did more digging and started reading about the high-amperage “mega fuses” (300A/400A). I also found a loose wire near the battery that I’m not sure where it’s supposed to connect—I’ll include a photo in this post.For reference, I haven’t checked the passenger-side fuse box yet.If anyone has any ideas or suggestions, I’d really appreciate the help. Thanks in advance!

 

That's for shipping when the vehicle was new. Just leave it coiled up out of the way. Shouldn't be part of your issue. You may want to check/replace the ECO start/Stop battery located on the drivers side under the cover area that looks like the one covering the main battery. Could be lots of reasons (fuses/relays) but we would need more symptoms and/or codes to help.

https://landroverforums.com/forum/ge...ery-lr4-82292/

 

When it was running there were no codes or errors showing which amazed me because it had been a long time since it was running. It did not make any kind of weird noises and drove smooth.
I will look at that start/stop battery this weekend, as well as the relays and the passagenger fuse box yoo. Thank you!