FIND THE SHORT TO FIX, IT'S PROBABLY IN THE HARNESS IN THE DOOR JAM.
It can have power locks with out keyless.
Remove the relay or fuse for the door locks.
What you probably need to do is to check you battery because i have a dodge 2004 also and my locks did the same thing so i just replaced my battery and the locks started working again.
The power door locks on a Dodge Caravan can stop working if the fuse is bad. Check the power door lock relay fuse that is located in the engine compartment on most Dodge Caravans. It should be next to the battery.
The automatic door locks on a Dodge Intrepid won't work if the fuse or switch are bad. These two components should be checked first to narrow down the cause.
The fuse for the door locks in a 2002 Dodge Caravan is located in the fuse box, which is typically found under the dashboard on the driver's side. You can identify the specific fuse by referring to the diagram on the fuse box cover or the owner's manual, where it will be labeled for the power door locks. If the fuse is blown, replacing it should restore functionality to the door locks.
On a Dodge vehicle it is the computer that controls the interior lights, locks, etc...
door open light is on, locks and mirrors will not work
You may have a dragging pulley or clutch plate that locks up when the rpm's increase
The dealer can turn it off with a scan tool.
Blown brake light fuse.
the dealercan turn them off with a scan tool