Ok so I just bought an '01 Dodge Ram Quad Cab 4x4 w/the 5.9. Here is my problem. The truck has keyless entry and the key fob does not work even with new batteries. I found out today that when I use the key in the drivers door to lock, the factory alarm does not arm and the red LED on the overhead console does not flash. The passenger side does not unlock/lock when I use the key in the drivers door. Now when I lock the passenger door with the key the system will arm and the LED on the overhead console will flash and the drivers side door will lock. While the system is armed if I go to the drivers door and unlock and open the door the alarm goes off and will only stop when I go back to the passenger door and use the key to unlock. Anyone have any ideas on what to look for? Any help would be greatly appreciated. Sorry for the long post and hope this all makes sense. I am at the end of my rope and have searched all over the net to find a solution. Thanks in advance!

 

Is that factory keyless entry/alarm?

 

Yes sorry forgot to mention that. It is all factory.

 

i have the same problem on my 01, i wonder if it could be a broken wire to the key switch, or a worn out switch

 

I can't find anything in the wiring diagram that would indicate how the truck would know you unlocked it with the key.......

 

Took the door panel off today and found 2 wires going to the lock cylinder and another 2 wires going to the door latch mechanism on the side of the door. This is whats weird. You put the key in the passenger side lock and turn it to lock, turn again and the drivers doors locks and security system arms. I think the drivers side lock should function the same way right, but the drivers door lock does not lock the passenger door or arm the system. Passenger door does the same for unlocking, turn key to unlock and once again to unlock the drivers door.

 

i would guess a broken wire in the drivers side door hinge area.

i don't have keyless or power locks to compare to on the dodge, but the wifey's explorer works like you described from both doors.

 

I think I will take the panel off again and see if I check and see if I am getting power to the drivers side wires when I lock/unlock from the passenger door. I will keep this updated as I go.