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

[78Delta88]

Also check the OEM operators manual if you have it. Yours should lock doors after selector put in drive. There is a fuse to disable this function. This is mentioned in the operator manual. I had a 94 Beretta which is basically the same car / same problem. Check that fuse. Sounds like you have an intermittent problem in that circuit.

 

[Longroof79]

Also check the OEM operators manual if you have it. Yours should lock doors after selector put in drive. There is a fuse to disable this function. This is mentioned in the operator manual. I had a 94 Beretta which is basically the same car / same problem. Check that fuse. Sounds like you have an intermittent problem in that circuit.

Thanks for your reply, Eric,
It certainly is an intermittent problem.
It does lock the doors when put in drive. However, while driving, the door locks switch on and off like it's possessed. I have the operators manual and it does indicate a fuse to disable automatic door unlock. I assume it will be able to lock, but to unlock, it would have to be done manually?
I have checked that fuse and it isn't blown. I will remove it and see what happens. Thank you my friend, I'll let you know what happens.

 

[78Delta88]

Hope it helps

 

[Longroof79]

Hope it helps

Thanks Eric,
I removed the fuse, and after driving the car around the block, I noticed that the doors don't unlock automatically. I could live with that rather than having the locks open and close sporadically. I'll keep an eye on it.

Btw, do you know where the power door lock relay was located on the Beretta ? 🤔