OK, it's a 2002 Xterra SE 4x4. I had the battery out last week (working on radiator hoses) and now when I leave the car unlocked, it locks itself!

I tried locking/unlocking with key fob three times; multiple fob pushes; starting & shutting off. Takes more than a minute or two, but when I get up, it's locked.

I changed fob battery, still no love...

I can't find anything in the owners manual, anybody else run into this???

Thank You!