For the last couple weeks, if I lock the car, it will immediately unlock itself. Then if I lock it again, it will lock and stay locked like it should. So, every time, whether I use the key or the FOB, I have to tell it to lock twice. I noticed that turning the key at the trunk lock or at the passenger door lock will not cause any other part of the car to lock. I know I used to be able to lock the whole car from the trunk, but don't remember if the front passenger door ever did that. Keep in mind this is a 1995 model with factory alarm, so it doesn't behave quite like the '93 and older locking systems.

I checked and repaired the trunk wiring. No difference. I have a new trunk lock actuator on the way and will report back soon on that, but I'm wondering if this sounds like a wiring issue to anyone or a low battery issue.

Thanks in advance.