Principles of Operation

WARNING: This page is about a different car, the 2002 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION: Do not use a key, pencil or any other hard object to press the keyless entry keypad buttons. These objects may damage the buttons.

NOTE: The keyless entry transmitter will not operate with the transmission in REVERSE or DRIVE.

NOTE: The security mode operation will not function if the vehicle is in gear.

The driver door module (DDM) receives inputs from the digital transmission range (TR) sensor, ignition switch, seat switch, window/door lock switches, lighting control module (LCM), keyless entry keypad switch and remote transmitter. The DDM outputs consists of keyless entry keypad switch illumination, power door lock actuators, luggage compartment release solenoid, horn relay and lighting control module (LCM).

The keyless entry keypad switch can be programmed with an alternate code. The alternate code can be entered by entering the five digit permanent entry code into the keyless entry keypad switch. Within five seconds of pressing the last button of the permanent code, press the 1/2 button and enter any alternate five digit code. After programming, the doors will signal by locking and then unlocking.

The auto-lock feature can be activated by entering the permanent five-digit code into the keyless entry keypad switch. After the permanent code is entered, depress and hold the 7/8 button on the keyless entry keypad switch within five seconds of entering the code. After depressing the 7/8 button on the keyless entry keypad switch, depress and release the 3/4 button on the keyless entry keypad switch within five seconds of depressing the 7/8 button. The 7/8 button on the keyless entry keypad switch must be released within five seconds of releasing the 5/6 button on the keyless entry keypad switch. The auto-lock feature can be disabled by repeating the step that was used to activate the auto-locks.

Programming the keyless entry remote transmitter is accomplished by using the diagnostic tool.