An update: It's been 10 months with many heavy rain storms since the dealer replaced the harness (24012-5SA1C HARNESS-ENGINE ROOM) and E45 connector on my 2019 Leaf and I have not had any more problems. It still has the original 12V battery which is in good condition. Water intrusion into the...
My 2019 Leaf had the “can’t shift out of Park” problem twice along with several episodes of warning lights and a depleted 12V battery. Rather than the 12V battery charging algorithm that is blamed often on this forum, it apparently was a wiring harness problem. I’ll update if the fix doesn’t...