Welcome to my world. I just took sail in the exact same boat. 2016 EX-T. Unhooked the battery while doing some work on the car. It was unhooked for a couple of weeks. I has something else to drive so it was no big deal. I hooked it back up...BAM. Every "Problem" the car could flash. It's really pretty in the dark lol Mine won't even shift out of gear! I've yet to try the emergency shift release. Forgot about trying that. From what I can find...it looks like it might call for a new computer and a common problem for 2016's. BUT...I've yet to find too many people that "I'll come back and report what I find out when my car get's fixed".