Question about 2003 Mercury Grand Marquis

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Got a 2003 mercury grand marquis which i bought and didnt come with a remote for the door locks. i have an extra remote from my 2003 ford expedition and need to know how to program it, any suggestions?

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Usually the truck and car fobs work on different signals. you can get inexpensive fobs on ebay, the car fob will have four buttons with a trunk release button.
once you have the correct fob, its pretty easy.

  • Just remember that you must also re-program your currently working remotes at this time also as if they are new since prior remotes are erased.
  • Max of 4 transmitters can be programmed.
Procedure:
  • Keep the driver's door open.
  • Electronically unlock the doors (Switch on door or working transmitter)
  • 2000-2006: Turn the ignition from OFF to RUN/ON 8 times within 10 seconds, with the eighth turn ending in RUN. If the module has successfully entered program mode, it will lock and then unlock all doors.
  • Within 20 seconds, press any button on an transmitter, and the doors will lock and then unlock to confirm that each transmitter has been programmed. Repeat this step for each transmitter.
  • NOTE: If the door locks do not respond for any transmitter, wait several seconds and press the button again.
  • To exit the programming mode:
    • Turn ignition to the OFF position.
    • Let the 20 seconds expire.
    • The maximum number of transmitters have been programmed.

Posted on Sep 05, 2010

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