Cadillac 2003 CTS, Owner'S Manual

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Central Door Unlocking System
Your vehicle has a central door unlocking feature. When
unlocking the driver’s door, you can unlock the other
doors by holding the key in the turned position for a
few seconds or by quickly turning the key twice in the
lock cylinder.
Power Door Locks
The power door lock
switches are located on
the front door panels.
Press the bottom part of the power door lock switch
to lock or the top of the switch to unlock all the doors
at once.
The rear doors do not have power door lock switches.
You must use the manual levers to lock and unlock the
rear doors when riding in the rear seat.
Last Door Closed Locking Feature
With this feature, you can delay the actual locking of
the doors.
When the power door lock switch or the lock button on
the remote keyless entry transmitter is pressed when the
key is not in the ignition and the driver’s door is opened,
a chime will sound three times indicating that last door
closed feature is active.
When all the doors are closed, the doors will lock
automatically after five seconds. If a door is reopened
before five seconds have elapsed, the five second timer
will reset itself once all the doors are closed again.
You can press the door lock switch or the lock button on
the remote keyless entry transmitter again to override
this feature and lock the doors immediately.
You can turn this feature off using the Driver
Information Center (DIC). When the last door closed
locking feature is off, the doors will lock immediately
when you press the power door lock switch or the lock
button on the remote keyless entry transmitter. See
“Vehicle Programming and Personalization Features” in
the Index for more information.