2001 Crown Victoria door locks stopped working also the keyless entry buttons on driver door & remote too. I replaced battery on the remote I checked the fuse in the fuse box. What else could it be?!

The keyless entry system consists of the following components:

• driver door module (DDM)
• keyless entry transmitter
• keyless entry keypad

The driver door module (DDM) receives inputs from the digital transmission range (TR) sensor, ignition switch, brake 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).

• Battery junction box (BJB) fuses:
  • circuit breaker 7 (20A)
• Central junction box (CJB)
  • 4 (10A)
  • 6 (15A)
  • 8 (25A)
  • 13 (5A)
• Keyless entry keypad switch
• Power door lock actuator
• Luggage compartment release switch
• Luggage compartment release solenoid
• Connectors or connections
• Wiring harness
• If fuse's good have checked for DTC'S - diagnostic trouble codes .
• B1526 Keyless Entry Circuit Short to Ground DDM Go To Pinpoint Test E . B1553 Decklid Release Circuit Short to Battery DDM Go To Pinpoint Test B . B1751 Park/Neutral Switch Circuit Short to Battery DDM Go To Pinpoint Test K . B2425 Remote Keyless Entry Out of Synchronization DDM Go To Pinpoint Test L Need a professional grade scan tool to check fro these codes . Not a code reader for OBD2 codes .

• The doors do not lock/unlock using the remote transmitter

• Remote transmitter not programmed.
• Remote transmitter.
• DDM.

• Go To Pinpoint Test F .

Did you program the new key fob ?

Remote Transmitter Programming NOTE: All remote transmitters are programmable and must be set at the same time.

1. Turn the key from OFF to RUN four times within three seconds, ending in RUN. The locks will then lock and unlock, confirming program mode has been entered.

1. Press any button on each remote transmitter to be programmed. The doors will lock and unlock to confirm that each remote transmitter has been programmed.

1. If additonal remote transmitters are to be programmed, repeat Step 3 within 7.5 seconds or steps 2 and 3 if more than 7.5 seconds have elapsed.

1. To exit program mode, turn the ignition to START or wait 7.5 seconds.

1. NOTE: Failure to wait at least 20 seconds will cause programming failures. Wait at least 20 seconds after turning the key to OFF or after the last remote transmitter has been programmed to activate a remote transmitter for testing or verification

Do you know if your door locks are module controlled or non module controlled ?
Locks, Latches and Entry Systems - Module Controlled
Principles Of Operation
CAUTION: Do not use a key, pencil or any other hard object to press the keyless entry keypad buttons. These objects may damage the keyless entry keypad buttons.
NOTE: The remote transmitter will not operate with the transmission in REVERSE or DRIVE.
NOTE: Upon installation of a new driver door module (DDM), the module must be reconfigured. Refer to Section 418-01 .
The DDM receives inputs from the digital transmission range (TR) sensor, ignition switch, brake switch, door lock control switches, lighting control module (LCM), keyless entry keypad and remote transmitter. The DDM outputs consists of keyless entry keypad illumination, door lock actuators, luggage compartment lid release solenoid, and LCM.
For DDM removal and installation information, refer to Section 419-10 .
Inspection and Verification
WARNING: If equipped with fire suppression system, refer to Section 419-03 for important safety warnings.
NOTE: Before starting electrical diagnosis, check for mechanical binds by manually operating the door locks. Operate lock system several times from each switch while observing the operation of all door locks. Be sure battery is fully charged.

1. Verify the customer concern.

1. Visually inspect for obvious signs of mechanical and electrical damage.
2. Visual Inspection Chart Mechanical Electrical
   • Binding latches
   • Battery junction box (BJB) fuse 8 (20A)
   • Central junction box (CJB) fuse(s):
     • 10 (5A)
     • 18 (10A)
     • 25 (10A)
   • Circuitry
   • Connectors
   • Door lock actuator
   • Door lock control switch
   • Keyless entry keypad
   • Luggage compartment lid release switch
   • Luggage compartment lid release solenoid
   
   
   1. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
   1. If the cause is not visually evident, connect the diagnostic tool to the data link connector and select the vehicle to be tested from the diagnostic tool menu. If the diagnostic tool does not communicate with the vehicle:
      • check that the program card is correctly installed.
      • check the connections to the vehicle.
      • check the ignition switch position.
   1. If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool operating manual.
   1. Carry out the diagnostic tool data link test. If diagnostic tool responds with:
      • SCP or ISO circuit fault; all electronic control units no response/not equipped, refer to Section 419-10 .
      • No response/not equipped for the DDM, refer to Section 419-10 .
      • No response/not equipped for the LCM, refer to Section 419-10 .
      • System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs and carry out self-test diagnostics for the DDM and LCM.
   1. If the DTCs retrieved are related to the concern, go to the Driver Door Module (DDM) Diagnostic Trouble Code (DTC) Index or Lighting Control Module (LCM) Diagnostic Trouble Code (DTC) Index to continue diagnostics.
   1. If no DTCs related to the concern are retrieved, GO to Symptom Chart .
   Drive Door Module (DDM) Diagnostic Trouble Code (DTC) Index DTC Description Source Action B1352 Ignition Key In Circuit Failure DDM Go To Pinpoint Test H . B1396 Door Lock Circuit Short To Battery DDM Go To Pinpoint Test C . B1526 Keyless Entry Keypad Circuit Short To Ground DDM Go To Pinpoint Test E . B1553 Luggage Compartment Lid Release Circuit Short To Ground DDM Go To Pinpoint Test B . B1751 Park/Neutral Switch Circuit Short To Battery DDM Go To Pinpoint Test L . B2425 Remote Keyless Entry Out Of Synchronization DDM Go To Pinpoint Test M .
   Lighting Control Module (LCM) Diagnostic Trouble Code (DTC) Index
   DTC Description Source Action B1300 Door Lock Circuit Failure LCM Go To Pinpoint Test N . B1310 Door Unlock Circuit Failure LCM Go To Pinpoint Test N . B1396 Door Lock Circuit Short To Battery LCM Go To Pinpoint Test N . B1397 Door Unlock Circuit Short To Battery LCM Go To Pinpoint Test N . B1677 Alarm Panic Input Circuit Failure LCM Go To Pinpoint Test J . B1679 Alarm Panic Input Circuit Short To Battery LCM Go To Pinpoint Test J .
   NOTE: For a complete list of DDM and LCM DTCs, refer to Section 419-10 .
   
3. ????????????? Do you have a professional scan tool ?
   ??

Keyless Entry
The keyless entry system consists of the following:

• smart entry control(SEC)/timer module
• keyless entry remote transmitters
• power door lock actuators
• body side door power door lock actuator
• liftgate actuator
• power door lock switches
• door ajar switches
• Principles of Operation
  All doors can be locked at once by turning the door key lock switch to the locked position. An individual door can be unlocked by moving the door key lock switch to the unlocked position and turning it again within five seconds; all the doors (including the liftgate) will unlock.
  The smart lock system is designed to keep the driver from locking his keys in the car. It will lock and then unlock all the doors if the smart entry control(SEC)/timer module detects the following conditions:
  
  • The ignition key still in the ignition.
  • A front door is open.
  • A door lock switch has been pushed to the lock position.
  The panic feature has a duration of 30 seconds from the last time the PANIC button is pressed. When locking the doors from the remote transmitter, the horn chirp/lamp flash feature can be disabled or enabled by holding the LOCK and UNLOCK buttons for two seconds. The hazards will flash three times to confirm that the feature has be enabled or disabled.

The control module probably see's an input that shouldn't be there . lock Switch , door ajar etc... Don't think it has anything to do with the remote . Some part stores have a tester to see if signal from the remote is working . Or the dealer ! Take it an see if your remote is sending a signal without you pressing any buttons .
If it is you need a new one .

You did it like this ?
Programming -Keyless Entry Remote Transmitter NOTE: All keyless entry remote transmitters (15K601) must be programmed at the same time.
NOTE: All previous transmitter identification codes (TIC's) will be erased when programming mode is entered.
NOTE: To program (or reprogram) the keyless entry remote transmitters into the generic electronic module (GEM)(14B204), perform the following steps.

1. Turn the ignition from OFF to RUN eight times within 10 seconds, ending in RUN. If the GEM has successfully entered program mode, it will lock and unlock all the doors.

1. NOTE: The first TIC must be entered within 7.5 seconds of entering the program mode and additional TICs must be entered within 7.5 seconds of the first TIC. The programming mode is exited whenever the timing constraints are not met. Press any button on a keyless entry remote transmitter, and the doors will lock and then unlock to confirm that each keyless entry remote transmitter has been programmed.

1. If the door locks do not respond for any keyless entry remote transmitter, wait for several seconds and press the button again.

1. Turn the ignition switch to the OFF position, or wait up to five minutes after step 1, to exit program mode. If a keyless entry remote transmitter has been programmed (or reprogrammed), the GEM will lock and unlock all the doors one last time.

Here are the instructions from the factory service manual:
1. Enter 5-digit permanent entry code into the keyless entry keypad.
2. Within 5 seconds of pressing last button of code, press the 1/2 button. All doors will lock then
unlock confirming you are in programming mode.
3. Press any button on first Keyless Remote within 5 seconds of pressing the 1/2 button. Locks will
cycle to indicate succesful programming.
4. If you are programming more than one Keyless Remote (Including any exsiting remotes) Press
any button on second keyless remote within 5 seconds of previous remote. Locks will cycle again
to indicate succesfull programming. (If the keypad light goes out before all remotes are
programmed the entire process must be repeated).
5. Press the 7/8 and the 9/0 buttons simultaneously on the keypad to exit program mode.

The keyless entry system is controlled by the (GEM) - generic electronic module .
Keyless Entry The electronic door lock system has two main components:

• generic electronic module (GEM)(14B204)
• keyless entry remote transmitter (15K601)
• NOTE: Battery power and ground must be remove before disconnecting the GEM connectors to avoid setting false codes.
  Power Locks Operation The power locks feature allows the customer to lock and unlock the doors via momentary switches located on the driver and passenger door. When the GEM detects a momentary press of the driver or passenger lock button, the GEM will supply power to the driver or passenger lock actuators for approximately 250 ms from relays internal to the GEM. When the GEM detects a momentary press of the driver or passenger unlock button, the GEM will supply power to the driver or passenger unlock actuators for approximately 250 ms from relays internal to the GEM.
  Remote Keyless Entry Door Locks Operation The remote entry feature allows the customer to unlock the driver door, unlock all doors, and lock all doors using a valid remote transmitter as long as the ignition switch is not in RUN or START. The driver door is unlocked whenever the GEM detects a valid remote transmitter unlock transmission. All the doors are unlocked when the GEM detects a second valid remote transmitter unlock transmission within three seconds of the first transmission. All the doors are locked when the GEM detects a valid remote transmitter lock transmission. If the GEM detects a second valid remote transmitter lock transmission within three seconds of the first transmission, the doors will lock again, the horn will sound for 20 ms and the parking lamps will flash for 200 ms to indicate the doors are locked. If the GEM detects the driver or passenger door is ajar during the second lock transmission, the doors are locked again and the horn is sounded twice. If the GEM detects a valid remote transmitter lock transmission within three seconds of detecting a valid remote transmitter unlock transmission, the GEM will lock all the doors
• • The doors do not lock/unlock using the remote transmitter
  • Ignition switch.
  • GEM.
  • Remote transmitter.
  • Remote transmitter batteries.
  • GO to Pinpoint Test C .
  You followed the program instructions to the letter ? Programming -Keyless Entry Remote Transmitter NOTE: All keyless entry remote transmitters (15K601) must be programmed at the same time.
  NOTE: All previous transmitter identification codes (TIC's) will be erased when programming mode is entered.
  NOTE: To program (or reprogram) the keyless entry remote transmitters into the generic electronic module (GEM)(14B204), perform the following steps.
  
  1. Turn the ignition from OFF to RUN eight times within 10 seconds, ending in RUN. If the GEM has successfully entered program mode, it will lock and unlock all the doors.
  1. NOTE: The first TIC must be entered within 7.5 seconds of entering the program mode and additional TICs must be entered within 7.5 seconds of the first TIC. The programming mode is exited whenever the timing constraints are not met.
     Press any button on a keyless entry remote transmitter, and the doors will lock and then unlock to confirm that each keyless entry remote transmitter has been programmed.
  1. If the door locks do not respond for any keyless entry remote transmitter, wait for several seconds and press the button again.
  1. Turn the ignition switch to the OFF position, or wait up to five minutes after step 1, to exit program mode. If a keyless entry remote transmitter has been programmed (or reprogrammed), the GEM will lock and unlock all the doors one last time.
  1. Take an have the vehicle checked for DTC'S

B1396 Power Door Lock Circuit Short to Battery GEM GO to Pinpoint Test B . B1397 Power Door Unlock Circuit Short to Battery GEM

dealer reflash

does trunk button work? panic button?
here's 2003 info:

• The doors do not lock/unlock using the remote transmitter

• Remote transmitter.
• Driver door module (DDM).

• Go To Pinpoint Test G .

SECTION 501-14: Handles, Locks, Latches and Entry Systems 2003 Town Car Workshop Manual
GENERAL PROCEDURES Remote Transmitter Programming

1. Cycle the ignition from OFF to RUN four times within three seconds. The locks will then lock and unlock, confirming that the program mode has been entered.

1. NOTE: When the first keyless entry remote transmitter is programmed, all other keyless entry remote transmitters are erased.
   Press any button on the transmitter to be programmed.

1. If additional keyless entry remote transmitters are to be programmed, repeat Step 2 within 7.5 seconds.

1. To exit program mode, turn the ignition to START or wait 7.5 seconds.

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Lock all the doors from the inside (with all the doors closed), unlock your driver's door by manually lifting the lock, then press it back down after you are out - this will prevent the alarm from sounding when you use the key to unlock the door.