Wacky problem. Hoping someone can shed some light on it.

[Longroof79]

Might not be there, it was quite a while ago.

I had the 94 Beretta Z26 and I had the unmarked undercover lights in it. So I do remember the fuse box on the passenger side I'm thinking there was one also on the driver side that was a long time ago.

The first problem I had with the automatic locking doors was right after I picked up the car I was in a slight rain so the doors were shut, windows were up, engine was running, shifter was in park. When I returned to the car after being away for about 15 minutes, the car had automatically locked its doors.

In my case I pulled that one fuse like it said in the operator manual, and then the gauge package didn't work. The other issue I had was when I was on a traffic stop I couldn't open the driver's door.

I actually had to have the car in Park, shut the engine off and then it allowed me to unlock and open the door. Totally stupid. But during this time back in the 90s is when GM and all the other automakers were putting in these safety devices that would control the door locks and yes some of them didn't make sense.

It still seems to unlock the doors overnight after locking them, Oddly enough, after cleaning the contacts in the door lock switches, the doors would remain locked overnight. Now I'm back to chasing my tail. I appreciate all your suggestions, Eric.
I put the question out there figuring other people must have encountered this problem before.

 

[Longroof79]

Have you considered the BCM? I suspected that when my '04 truck was doing this and other things but it turned out to be the Clifford alarm system. With so many control modules and relays the newer vehicles are a nightmare.

Johnny,
Not to sound ignorant, but please define BCM. I take it it's a module of some type.

 

[Sweet_Johnny]

Johnny,
Not to sound ignorant, but please define BCM. I take it it's a module of some type.

Sir, I've learned a lot from you as well as others here and you're certainly not ignorant! I didn't really know what it was myself until I had the issues, but it's the Body Control Module. Essentially the brain box for all of the interior accoutrements. As I understand it, it plays a role in controlling the electronic devices such as locks, windows, gauges, interior lamps and things of that nature. I could realistically see a bad chip, cold solder joint, or short on a body control module circuit board being the culprit, activating things as contact is made or broken. Possibly due to temp?

 

[Longroof79]

Sir, I've learned a lot from you as well as others here and you're certainly not ignorant! I didn't really know what it was myself until I had the issues, but it's the Body Control Module. Essentially the brain box for all of the interior accoutrements. As I understand it, it plays a role in controlling the electronic devices such as locks, windows, gauges, interior lamps and things of that nature. I could realistically see a bad chip, cold solder joint, or short on a body control module circuit board being the culprit, activating things as contact is made or broken. Possibly due to temp?

Thank you Johnny.
That makes sense to me now. Many of us have worked on cars in various stages over the years, but never get to know it all. I never proclaim or profess
to know it all. The way I see it, everyday is a new learning experience.
Body Control Module....hmmm! Electrical problems can certainly be an intertwining mess. Usually I'm not intimidated by them, or try not to be, but will admit being stumped.

Again, thank you my friend for your input. and thank you to my fellow members for their input as well. . Multiple heads are generally better than one. 🤔😉🤐😉

 

[ELCAM]

To verify, you leave it unlocked and find it locked in the morning?

If so that points to another culprit. There is a multi function alarm module in the convenience center that you might try unplugging to see what affect that has.

 

[Sweet_Johnny]

To verify, you leave it unlocked and find it locked in the morning?

If so that points to another culprit. There is a multi function alarm module in the convenience center that you might try unplugging to see what affect that has.

If there's an alarm system of any kind that seems to be the first item accused by people I asked, and was my actual problem in the end. My locks had a mind of their own as I sat there, the gauges weren't working correctly, the windows and turn signals refused to operate faithfully, and finally it wouldn't start. It ended up being the Clifford alarm system.

 

[Longroof79]

To verify, you leave it unlocked and find it locked in the morning?

If so that points to another culprit. There is a multi function alarm module in the convenience center that you might try unplugging to see what affect that has.

There is no alarm system whatsoever. What also happens is when I lock the doors overnight and check them the next day, they're unlocked.
I'm guessing an OBD type scanner would be ineffective troubleshooting this problem?

 

[ELCAM]

OBD will be of no help with this problem.

The relay I am talking about is factory and should be under the middle of the dash, take out the ashtray and you should be able to see the convenience center with the TS flashers and a bunch of relays and noise makers.

 

[Longroof79]

OBD will be of no help with this problem.

The relay I am talking about is factory and should be under the middle of the dash, take out the ashtray and you should be able to see the convenience center with the TS flashers and a bunch of relays and noise makers.

Thank you for your suggestion(s)
I didn't think an OBD scanner would be of any use in this case.

Behind the ashtray is probably the only place that I didn't look so far. Today's another day. Wish me luck.

 

[Sweet_Johnny]

Good luck, don't pull your hair out!