Programming Horn Enable/Disable
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2003 Dodge Intrepid, 2003 Chrysler Intrepid, 2003 Chrysler Concorde, 2003 Chrysler 300M, and 2002 Dodge Intrepid. However, it is still accessible from the selected car via links, so may be relevant.
Turn ignition on. Continually press the lock button for a minimum of 4-10 seconds. Within the 4-10 second range, press the unlock button while continuing to press the lock button. Release both buttons. BCM will toggle on/off state of horn chirp feature