Smart entry control module problem?

[edroux]

Hello all. I'm new to the forum, but I hope someone can share some insight.

My wife has a 99 Nissan Sentra that's got about 118k miles on it. About two weeks ago, she started telling me that "the blinkers sometimes keep clicking" after she turns. I went out and drove the car around for a while, but didn't notice any unusual noises. A few days later, it happened again while she was going to work, but this time when she got out of the car and locked it, all the doors unlocked themselves again. This repeated several times until she decided she couldn't mess with it anymore and left it unlocked, went in to her office and called me to come look. When I got there, I drove it around again, locked and unlocked the doors, etc. but I again didn't notice any weirdness. A few days after that, we were both going out to our cars in the morning and it started happening when she got in, so I got to witness it this time. Turns out the clicking that she thought was the blinker was actually some sort of relay or something related to the power locks. I confirmed this later by hitting the unlock button while all the doors were already unlocked and she said that it was the same noise.

So. What we have is something that's causing her locks to spontaneously unlock themselves. It seems to happen mainly in the morning when it's either cold or wet (though wet weather isn't a guarantee that it will happen) and my wife says that she thinks it happens more when she parks with her wheels turned to the left.

I've done a bit of research and the only thing I've found that really seems similar is a problem with the smart entry control module, though we aren't having the window/dome light problems I've seen others describe. What would be the best way to find out for sure that it is or isn't the SECM?

The other possibility that I've come up with has to do with the battery. We had trouble starting the car a couple nights ago and I popped the hood and found that one of the battery contacts was seriously corroded, so it wasn't getting a good connection. If the connection was constantly being established and broken, could that cause the locks to unlock like that? Perhaps some sort of safety feature? This is a complete guess on my part, but it seemed suspicious that it would happen around the same time.

If you're still reading, thanks for sticking it out through my long-windedness.

[nametakennow]

I'd go ahead and clean up the terminals real well first and see what happens.

[edroux]

Actually replaced them already. That was this afternoon, so not enough time yet to really tell for sure if that fixed it.

[edroux]

Hey, quick update:

In the week since I replaced the contacts, the problem with the locks hasn't resurfaced, so I'm assuming the weak signal somehow triggered it.

[ABNRML4U]

ALL RIGHTTTTTTTYYYYYYYYY THEN!!!!!