Dodge 2004 Caravan Owner's Manual page 19

If you press the power door lock switch while the sliding
door is open, the sliding door will lock.
Automatic Door Locks — If Equipped
The doors will lock automatically on vehicles with power
door locks if:
1. The transmission is in gear,
2. all doors are closed,
3. the vehicle speed is above 18 mph (29 km/h) and
4. the doors were not previously locked using the power
door lock switch or remote keyless entry transmitter.
The Automatic Door Locks can be enabled or disabled by
performing the following procedure:
1. Close all doors and place the key in the ignition
switch.
THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 19
2. Cycle the ignition switch ON/OFF four times ending
in the OFF position. (do not start the engine)
3. Within 10 seconds of the final cycle, press the interior
driver's door lock switch to the LOCK position.
4. A single chime will sound to signify that you have
successfully completed the programming.
You can turn the feature back on by repeating the above
mentioned procedure.
Auto Unlock — If Equipped
The doors will unlock automatically on vehicles with
power door locks if:
1. The Auto Door Locks feature is enabled and the Auto
Unlock feature is enabled,
2. the transmission was in gear and the vehicle speed
returned to 0 mph (0 km/h),
3. the transmission is in NEUTRAL or PARK,
2