This started today and it rained, so I’m wondering if that’s a factor. The alarm just won’t stop, no matter what I try. It already drained my battery, and Advanced Auto thought that might be the problem, but it wasn’t. No shops are open today, and I even replaced the key batteries. Could it be the sensor? I ended up pulling the breaker for the horn, so now it’s just flashing lights until the battery dies.
Any warning lights on your dash? I had a similar issue with my 2018 model, and it turned out to be the hood latch alarm. I had to replace the hood latch to get it fixed.
Flynn said:
Any warning lights on your dash? I had a similar issue with my 2018 model, and it turned out to be the hood latch alarm. I had to replace the hood latch to get it fixed.
Nope, no warning lights at all 
And of course, this had to happen on a Sunday. Thanks for the suggestion though, I’ll look into the hood latch.