2nd gen lock problem

Hello! A problem recently arose regarding the door lock. When locking the door, the lock goes crazy and starts unlocking multiple times and very quickly. This had already happened to me not long ago, but it had resolved itself after a short time and I didn't give it any importance. Could someone help me solve it? I'm very lost

I attach a video that shows the problem:

https://youtube.com/shorts/CVZJmyKdu40?si=MpOgGBBgNDbCY5Dl

 

Is your fob nearby?
Try changing the battery in the fob.

 

Check your door lock actuators. One of them is possibly not locking all the way, which will cause them all to unlock.

 

I don't have a lock control. My truck comes pre-wired for that but it didn't come with the corresponding receiver.

 

How can I check that? I am very lost on this topic

 

Battery in the Fob, replace with a high quality item... had a dealership offer to replace my whole auto lock system (the door lock actuators) due to a similar issue with the locks cycling from unlocked to lock... swapped the battery and not been an issue at all. but the battery was on its way out when i took it in for service and i knew the issues even mentioned that to the advisor...

 

There is also a lock confirmation switch that signals a successful lock. If commanded to lock and it doesn't make the switch the door will unlock.

Here is the switch inside the lock actuator, circled in red.

 

My truck didn't come with a fob, so I don't think that's it. Maybe it could be something with the actuators, but I don't know how to check that.

 

The truck is completely closed. The last time this happened to me, the truck spent an entire night unlocking the lock. The truth is I was afraid that something was going to happen to him. but the next day it was fixed
To check the actuator I would have to open the inside of the door and check if the actuator works correctly, right?

 

See post # 7 with a picture of the feedback switch.

It could also be a failing Body Control ECU ( part of the internal fuse panel. ).

Body ECU on the backside of fuse panel to the left of the steering wheel.

 

Sometimes you can spot a faulty actuator just by closely observing the lock button movement on each door.
When they start to fail you can see that the button doesn't move the whole range of motion it should normally travel.
But you have to look CLOSELY.
You can also connect a scanner that has body control unit monitoring and see each actuator outputs, but I only know for sure the factory scanners have that info for certain.

 

Mine does that when the key is in the ignition, but it doesn't "fade out" unlocking several times like that. I'm assuming that's not your problem since you said it did it all night once, but just a talking point.

 

i have a base model tacoma like yours with no key fob... i noticed accidently some time ago that if the key is left in the ignition you cannot lock the doors manually with the door ajar... it will automatically unlock the doors... i couldn't find an answer looking thru my owner's manual... and researching online... i think this unlock feature is present so you don't lock yourself out of the truck when exiting... could it be a possible issue with your ignition... even with the key not in the ignition... hopefully this observation is helpful... and not muddying the waters...