I've been having a problem since I picked it up from the previous owner. Key fob is lost so I have no keyless entry to try. The drivers side door will unlock all doors and so will passengers side, but neither will lock the doors. All my door's wite harnesses are connected so there shouldn't be a break in the circuits. When I hold down the unlock switch the door chime sounds and it stops as soon as I let go of the switch. I would post a video but it's too large to add. If anyone could offer some insight into what is going on that would be extremely appreciated. Thank Y'all. Contact me if you're confused by anything.