Dodge CHALLENGER 2009 - Manual (Page 32)

If you press the power door lock switch while the key is
in the ignition, and either door is open, the power locks
will not operate. This prevents you from accidentally
locking the key in the vehicle. Removing the key or
closing the door will allow the locks to operate. If a door
is open, the key is in the ignition, and the ignition is in the
LOCK or ACC position, a chime will sound as a reminder
to remove the key.
Automatic Door Locks
The doors will lock automatically if all of the following
conditions are met:
1. The Automatic Door Locks feature is enabled
2. The transmission is in gear
3. All doors are closed
4. The throttle is pressed
5. The vehicle speed is above 15 mph (24 km/h), and
6. The doors were not previously locked using the power
door lock switch or Remote Keyless Entry (RKE)
transmitter.
Power Door Lock Switch
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